taxonID	type	description	language	source
482DFA0BFFDEFFE2FCEBFE1B1F8B61D8.taxon	materials_examined	TYPE MATERIAL. — Angola. Saint-Paul-de-Loanda, 1886, Cavelier de Cunerville leg., lectotype by present designation, rc (tl) 2.6 (3.6) mm (MNHN Ci 373); paralectotypes 3 spec., cl (tl) 1.2 (1.4) to 3.4 (4.4) mm (MNHN Ci 373). MATERIAL EXAMINED. — Golf of Guinea, Calypso, stn 19, 5 ° 2 ’ 90 ” N, 5 ° 24 ’ 40 ” W, 21 - 27 m, 1956, 1 spec., cl (tl) 5.4 (7.1) mm (MNHN Ci 374). Hermaphrodite without males. The body was dissect- ed, with the appendages mounted on slides.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFDEFFE2FCEBFE1B1F8B61D8.taxon	diagnosis	DIAGNOSIS. — Capitulum with 15 plates, distributed in three rows; all plates without apical umbo except tergum.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFDEFFE2FCEBFE1B1F8B61D8.taxon	description	DESCRIPTION Hermaphrodite. Capitulum (Fig. 1 A, B) with 15 plates, covered by hairless cuticle; length a little larger than twice width; carinal margin bent, basal portion straight, distal portion concave, occludent margin concave. Plates thin, nearly smooth, with thin growth lines. Plates separated from each other by cuticle. Scutum (Fig. 1 B) approximately quadrangular, with umbo a little above middle of occludent margin; length more than twice its width; occludent and lateral margins nearly straight, tergal and basal margins concave. Tergum (Fig. 1 B) elongate, apex blunt, curved to carina; occludent and carinal margins convex, basal margin mostly convex, but with a concavity near upper portion of scutum; surface area larger as that of scutum; three apico-basal ridges at occludent surface. Carina (Fig. 1 B, D) bent, basal portion straight, upper portion curving upward, umbo at two thirds of length, tectum uniformly convex, basal margin rounded. Upper-latus (L 1) (Fig. 1 B) flat, pentagonal, higher than wide, slightly wider apically than basally; all margins almost straight; carinal margin longest, followed by inframedian-lateral margin, and tergal and scutal margins which have equal length, basal smallest; length of plate about half length of scutum; umbo central not projected. Inframedian-latus (Fig. 1 B) flat, displaced from lower whorl, situated higher than that of the other laterals, quadrangular, equilateral, all margins straight; umbo central, not projected. Plates of the lower whorl convex with irregular shape. Rostrum (Fig. 1 B, C) large; half the length of scutum; situated as high as carino-latus and higher than other in lower whorl plates; in lateral view, uniformly curved toward scuta; in rostral view, nearly quadrangular, with medio-apical umbo projected. Rostro-latus (Fig. 1 B) large, irregularly shaped, all margins straight except by rostral, which is undulated; umbo nearly central, projected outwards. Carino-latus (Fig. 1 B) elongated, with umbo medio-basal, projected, much higher than wide and wider above umbo. Sub-carina (Fig. 1 B, D) in lateral view triangular, in carinal view pentagonal, with umbo nearly central, all margins concave. Peduncle (Fig. 1 B) short, about one third of capitulum length. Cuticle thick, with several small conic scales well embedded in cuticle, with apparently no organization. Prosoma (Fig. 2 A) with four filamentary appendages along dorsal midline, one anteriorly and others together, all with almost same length. Labrum (Fig. 2 B) bullate, crest with scattered denticles. Palp (Fig. 2 B) small, paddle-like, simple setae along the inner margin and distal portion. Mandible (Fig. 2 C) with four large teeth, second to fourth with upper margin denticulate, and a small pointed tooth on lower angle; distance between first and second tooth twice that between second and third. Maxilla I (Fig. 2 D) with cutting edge with a small notch on upper portion and slightly projected below; upper portion with two large and strong and three median setae above notch, and five median spines bellow notch, and two large and 10 thin setae on projected portion. Maxilla II (Fig. 2 E) slightly bilobed, with simple and finely pinnate setae along margins, except in the notch; papilla of maxillary gland not pronounced. Cirrus I (Fig. 3 A) situated far apart from the cirrus II, with rami of almost same length; articles clothed with numerous, simple and finely pinnate setae. Cirri II-VI with equal rami; intermediate articles of cirrus VI (Fig. 3 B) three times as long as wide, armed with four pairs of long setae and setulae at the base of long setae, all setae simple, two setae on posterior angle. Setal-article ratio about 5: 1. Caudal appendage leaf-like (Fig. 3 C), unarticulated, with a constriction near base, short, smaller than protopodite, with several setulae along anterior margin and apex and one long, thin, distal seta. Penis (Fig. 3 C) short, a little larger than protopodite, clothed by small setae. Males absent. Number of articles of cirri I- VI is presented in Table 1.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFDEFFE2FCEBFE1B1F8B61D8.taxon	discussion	REMARKS The type series contains very small specimens, mostly decalcified, with most characters difficult to observe. The description above is based on the specimens collected by La Calypso. Gruvel (1902 c) described this species based on three very small specimens (capitular length varying between 1.2 and 3.4 mm). The present description is based on one specimen from Guinea Gulf with 5.4 mm of capitular length, which was studied previously by Stubbings (1961 b). Euscalpellum encompasses six species, characterized by the presence of 15 plates on capitulum arranged in three rows. Of these species, only E. renei and E. rostratum (Darwin, 1852) have the capitular plates with umbo not apical, except the tergum and rostrum in E. rostratum. But the shape and umbo position of the other capitular plates clearly distinguish E. renei from E. rostratum. Otherwise, E. rostratum has an Indo-west Pacific distribution and E. renei is known only from the tropical west coast of Africa. E. renei is recorded from Guinea (French Guinea) to Angola (11 ° N to 9 ° S) from 21 - 27 to 63 m. It was collected on tubes of polychaetes and hydroids.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFDAFFEDFF12FB431AAE6798.taxon	materials_examined	TYPE MATERIAL. — South of Cape Bojador, on bryozoans, 882 m, Talisman, 1883, paralectotype, cl (tl) 13.6 (22.8) mm (MNHN Ci 1).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFDAFFEDFF12FB431AAE6798.taxon	diagnosis	DIAGNOSIS. — Capitulum with 15 plates, including two subrostra; rostro-latus separated from carino-latus; peduncular scales small, rounded.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFDAFFEDFF12FB431AAE6798.taxon	description	DESCRIPTION Hermaphrodite. Capitulum (Fig. 4 A) with 15 plates, covered by thick cuticle; length a little larger than width; carinal margin slightly convex, occludent margin convex. Plates thick, with longitudinal ridges and thin growth lines. Plates mostly approximate from each other. Scutum (Fig. 4 A) triangular, with an apicobasal ridge, with both sides flat, but angulose along ridge; length 1.5 time its width; occludent and basal margins slightly convex, tergal margin concave; apex slightly curving outward. Tergum (Fig. 4 A) balloon-shaped, with a large, flat apicobasal ridge dividing plate in two similar, flat sides; apex slightly curving outward; occludent margin straight, carinal margin slightly convex; surface area larger than that of scutum. Carina (Fig. 4 A, C) slightly arched, with a narrow tectum and two large, flat laterals, basal margin cutted V-shaped, umbo apical, projecting upwards, extending up to mid-point of carinal margin of tergum. Upper-latus (L 1) (Fig. 4 A) triangular, symmetrical, wider than high, concave medially, situated in the lower whorl; apex nearly straight, situated between scutum and tergum junction. Rostrum (Fig. 4 A, B) large; about one third the length of scutum; projected backward, and slightly curved toward scuta; tectum concave medially. Rostro-latus and carino-latus (Fig. 4 A, B) separated from each other, triangular, wider than high, slightly concave medially; umbos incurved. Sub-carina (Fig. 4 A, C) triangular, equilateral, as wide as high, umbo apical; apex strongly curved to carina. Sub-rostrum 1 (Fig. 4 A, B) triangular, surface slightly concave and sub-rostrum 2 triangular with surface convex. Peduncle (Fig. 4 A) short, about two thirds length of capitulum. Cuticle thick, covered by several small nearly triangular scales. Prosoma without filamentary appendages. Labrum (Fig. 5 A) bullate, crest without teeth. Palp (Fig. 5 A) small, paddle-like, finely pinnate setae along the inner margin and surface. Mandible (Fig. 5 B) with four teeth, fourth with upper margin denticulate, lower angle denticulate; distance between first and second tooth almost same of between second and third. Maxilla I (Fig. 5 C) with cutting edge irregular in outline; upper portion with two large, strong and one median, strong setae, followed by six small spines in a large concavity, seven median spines on a projection and several small, thin spines below. Maxilla II (Fig. 5 D) slightly bilobed, with finely pinnate long setae along margins, except in the notch; papilla of maxillary gland not projecting. Cirrus I (Fig. 6 A) not situated far apart from the cirrus II with anterior ramus shorter than posteri- or, about 0.7 time length of posterior; basal articles protuberant, clothed with numerous, simple and finely pinnate setae. Cirri II-VI with equal rami; intermediate articles of cirrus VI (Fig. 6 B) about twice longer than wide, armed with four pairs of long, finely pinnate setae, setulae at the base of long setae, and one small seta between each longer setae pair on anterior margin; two to six long setae simple or finely pinnate on posterior angle. Setal-article ratio about 5: 1. Caudal appendage (Fig. 6 C) unarticulated, short, about one quarter the height of coxopodite of cirrus VI, with few simple setae at apex. Penis absent. Males absent. Number of articles of cirri I-VI is presented in Table 2.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFDAFFEDFF12FB431AAE6798.taxon	discussion	REMARKS This species was studied by Newman (1980) who described one specimen of the type series. In order to give more details of the appendages and to compare them with that studied by Newman, I dissected another specimen, which presented some distinctive characters from that previously dissected: 1) the prosoma did not present any filamentary appendages and Newman (1980: 391) observed two sets of filamentary appendages; 2) the intermediate article of cirrus VI was armed with four pairs of long setae and Newman observed five pairs. The numbers of setae on the articles of cirrus VI probably are variations related to distinct sizes of the specimens. But the variations in the number of filamentary appendages are very curious. By all the other characteristics I discard the possibility that the type series of S. pilsbryi contains more than one species. Therefore, the variation in the number of filamentary appendages can be accepted as a variation of the species. The number of filamentary appendages is commonly used for distinguishing species in several genera (e. g., Lepas and Glyptelasma) and to my knowledge the variation in their number was not reported before.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFD5FFE8FCEDFD361ECA66B9.taxon	materials_examined	TYPE MATERIAL. — SW of Azores, Talisman, 1883, drag. 118, 3175 m, holotype by monotypy, cl (tl) 11.2 (14.2) mm (MNHN Ci 402).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFD5FFE8FCEDFD361ECA66B9.taxon	diagnosis	DIAGNOSIS. — Capitulum with 14 plates striated longitudinally. Inframedian-latus hourglass-shaped with umbo nearly central. Carino-latus about twice higher than wide. Rostro-latus trapezoidal, a little wider than high. Cirrus I with anterior ramus three quarters the length of posterior ramus. Median article of cirrus VI with four pairs of setae on anterior margin. Caudal appendage longer than protopodite.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFD5FFE8FCEDFD361ECA66B9.taxon	description	DESCRIPTION Capitulum (Fig. 7 A) oval, length less than twice the width, carinal and occludent margins similarly curved. Plates striated, except by carina and most of tergum; with thin growth lines. Cuticle thin. Tergum (Fig. 7 A) with its surface area greater than scutum; without apicobasal ridge. Basal margin nearly straight. Carinal margin slightly convex at lower portion and concave near apex. Occludent margin convex. Apex acute, curved toward carina. Scutum (Fig. 7 A) with carinal portion with a large furrow in front of upper-latus apex and occludent portion regularly convex, with conspicuous apicobasal ridge; height about twice the greatest width. Basal margin straight. Tergal margin nearly straight, presenting a lid. Occludent margin accentually convex. Lateral margin convex, except for upper concavity, to accept apex of upper-latus. Apex slightly curved, superimposed on tergum. Carina (Fig. 7 A, C) arching regularly, wider at upper portion, with umbo apical. Tectum flat bordered by high lateral ridges, angularly flexed to laterals; basal margin nearly rounded. Upper-latus (Fig. 7 A) pentagonal with apex curved toward scutum, umbo subapical, projecting. Scutal margin largest, followed in size by tergal, carino-lateral, carinal and, the smallest rostro-lateral margins; scutal and carino- lateral margins concave; other margins almost straight. Carino-latus (Fig. 7 A, C) nearly pentagonal, about twice higher than wide, with umbo at carinal base, not projecting backward; curving regularly under carina. Carino-latera slightly interdigitating with one another below carina. Inframedian-latus (Fig. 7 A) hourglass-shaped, higher than wide, umbo nearly central and projected. Rostro-latus (Fig. 7 A) trapezoidal, little wider than high, with conspicuous apico-basal ridge; basal one half of distal margin, parallels, umbo not projecting backwards. Rostrum (Fig. 7 B) reduced, small, elongate, mostly situated bellow carino-latera. Peduncle (Fig. 7 A) with one quarter capitulum length, mostly covered by wide, large scales in an eight-plated pattern: sr-l-sc; rl-cl. Labrum (Fig. 8 A) bullate, with a series of about 35 teeth. Palp (Fig. 8 A) long, thin, with simple setae on margins. Mandible (Fig. 8 B) with three acute teeth, distance between first and second tooth 1.25 times distance between second and third; lower angle denticulate. Maxilla I (Fig. 8 C) with anterior border nearly straight, having a shallow, medial notch; two large and two median strong spines above notch and four median spines below. Maxilla II (Fig. 8 D) nearly rectangular, covered by numerous simple or finely pinnate setae; papilla of maxillary gland strongly pronounced. Cirrus I (Fig. 9 A) with unequal rami, anterior ramus three quarters the length of posterior ramus; former with protuberant articles. Cirrus II to VI with equal, long rami. Median article of cirrus VI (Fig. 9 B) almost three times longer than wide, four pairs of simple or finely pinnate large setae on anterior margin; two to three setae on posterior angle. Setal-article ratio about 4: 1. Caudal appendage (Fig. 9 C), with eight articles, 1.3 times longer than protopodite of cirrus VI; articles with long setae on distal margins, and cluster of simple setae on apex. Penis absent. Number of articles of cirri I-VI and caudal appendage is presented in Table 3.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFD5FFE8FCEDFD361ECA66B9.taxon	discussion	REMARKS The holotype shows an intermediate stage in the development of longitudinal ridges: the larger specimens have their plates with a greater number of longitudinal ridges (Young 1998 a: 40). This species was originally described from Azores region (Gruvel 1900 a) and posteriorly recorded from the West European and Iberian basins (Young 1998 a, 2001). The characters of the specimens taken after Gruvel agree with the holotype description. Furthermore, C. recurvitergum was recorded from Indian Ocean, near the coast of Somali by Weltner (1922) but he did not described or figured these specimens. This last record needs to be reevaluated. In the Atlantic, it was recorded from 34 to 44 ° N and from 2 to 36 ° W, between depths of 2900 and 4270 m.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFD0FFF4FF27FC561CA76038.taxon	materials_examined	TYPE MATERIAL. — Azores Region, Talisman, 1883, drag. 128, 38 ° 7 ’ N, 29 ° 32 ’ W, 960 - 998 m, lectotype by present designation, only the capitulum, cl 11.4 mm (MNHN Ci 398).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFD0FFF4FF27FC561CA76038.taxon	diagnosis	DIAGNOSIS. — Capitulum oval, flattened with smooth plates. Carina with tectum flat, bordered by lateral ridges. Carino-latus almost twice higher than wide, with umbo at carinal base, slightly projecting backward. Inframedian-latus triangular, slightly higher than wide. Rostro-latus slightly wider than high. Cirrus I with anterior ramus three quarters the length of posterior ramus. Caudal appendage slightly longer than protopodite of cirrus VI.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFD0FFF4FF27FC561CA76038.taxon	description	DESCRIPTION Capitulum (Fig. 10 A) oval, flattened, length almost twice the width, carinal margin more curved than occludent margin. Plates smooth, with thin growth lines, presenting alternate a hyaline white bands and other darker. Cuticle thin. Tergum (Fig. 10 A) with its surface area greater than scutum; inconspicuous apicobasal ridge. Basal margin convex. Carinal margin slightly convex at lower portion and concave near apex. Occludent margin convex. Apex curved toward carina. Scutum (Fig. 10 A) convex, with inconspicuous apicobasal ridge; height more than twice the greatest width. Basal margin straight. Tergal margin slightly concave, presenting a lid. Occludent margin nearly straight at mid-basal part and distally convex. Lateral margin convex except for upper concavity to accept apex of upper-latus. Apex curved, superimposed on tergum. Carina (Fig. 10 A, C) arching continuously, slightly wider at upper portion, with umbo apical. Tectum flat with undulated growth lines, bordered by lateral ridges; basal margin slightly concave. Upper-latus (Fig. 10 A) pentagonal with apex curved toward scutum, umbo sub-apical, projecting. Scutal margin largest, followed in size by tergal and carino-lateral margins with same length, carinal margin and the smallest rostro-lateral margin. Scutal margin concave; other margins straight. Carino-latus (Fig. 10 A, C) nearly pentagonal, almost twice higher than wide, with umbo at carinal base, slightly projecting backward; with a ridge from umbo to basal angle. Carino-latera with ridges posteriorly, but not interdigitating with one another below carina. Inframedian-latus (Fig. 10 A) triangular, slightly higher than wide, shorter than rostro-latus, with umbo straight. Rostro-latus (Fig. 10 A, B) triangular, slightly wider than high, with an inconspicuous apicobasal ridge. Rostrum (Fig. 10 B) small, reduced to small triangular point between rostro-latera. Peduncle (Fig. 10 A) not anymore available in the lectotype. There are only one sc, one rl and one l scales. In the figures of Gruvel (1920: pl. 2, figs 17, 18) the peduncle is one third the capitulum length and is covered by large scales; the rl-cl and l-sc scales can be observed (Fig. 10 A). Therefore, I suppose this species has an eightplate whorl pattern: rl-cl; sr-l-sc. Labrum (Fig. 11 A) bullate, with one series of about 50 denticles. Palp (Fig. 11 A) short, acuminate with few simple setae. Mandible (Fig. 11 B) with three acute teeth, distance between first and second tooth more than twice distance between second and third; lower angle denticulate. Maxilla I (Fig. 11 C) with anterior border having an inconspicuous, shallow, medial notch, and two large and 10 median unpaired spines. Maxilla II (Fig. 11 D) nearly triangular, covered with numerous large and simple setae except for median region on anterior margin; papilla of maxillary gland strongly pronounced. Cirrus I (Fig. 12 A) with unequal rami, anterior ramus the three quarters length of posterior ramus; former with protuberant articles. Cirrus II with equal rami but shorter than posterior cirri. Cirri III to VI with equal, long rami. Median article of cirrus VI (Fig. 12 B) less than twice longer than wide, five pairs of simple long setae and few fine setulae between larger pairs on anterior margin; three or four setulae on lateral surface; two setae on posterior angle. Setal-article ratio about 3.5: 1. Caudal appendage (Fig. 12 C) with six articles, slightly longer than protopodite of cirrus VI; articles with few, small setae on distal margins, and cluster of simple setae on apex. Penis absent. Number of articles of cirri I-VI and caudal appendage is presented in Table 4.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFD0FFF4FF27FC561CA76038.taxon	discussion	REMARKS Gruvel (1900 a) described Arcoscalpellum atlanticum based on two specimens collected from the Talisman Expedition, drag. 128, but only one specimen was found.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCCFFF7FF2DFAD61A6E64F9.taxon	materials_examined	TYPE MATERIAL. — SW of Azores, Talisman, 1883, drag. 118, 34 ° 46 ’ N, 36 ° 11 ’ W, 3175 m, holotype by monotypy, only left side entire, right side with only capitular plates of lower whorl, cl (tl) 20.7 (28.4) mm (MNHN Ci 398). MATERIAL EXAMINED. — No locality, 1 spec. with the plates disarticulated in very bad condition (MNHN Ci 384).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCCFFF7FF2DFAD61A6E64F9.taxon	diagnosis	DIAGNOSIS. — Capitulum with plates striated, except by carina and carinal portion of tergum. Carina with tectum concave bordered by high lateral ridges. Upper-latus pentagonal, umbo subapical, projecting. Inframedianlatus triangular, higher than wide, with umbo subapical and projected. Cirrus I with anterior ramus three quarters the length of posterior ramus. Median article of cirrus VI four pairs of setae on anterior margin and a row of three to seven setulae on lateral surface. Caudal appendage as long as protopodite of cirrus VI.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCCFFF7FF2DFAD61A6E64F9.taxon	description	DESCRIPTION Capitulum (Fig. 13 A) oval, length less than twice the width, carinal and occludent margins similarly curved. Plates striated, except by carina and carinal portion of tergum, with thin growth lines. Cuticle thin, pilose. Tergum (Fig. 13 A) with its surface area greater than scutum; inconspicuous apicobasal ridge. Basal margin nearly straight. Carinal margin slightly convex at lower portion and concave near apex. Occludent margin straight. Apex blunt, straight. Scutum (Fig. 13 A) with carinal portion flat and occludent portion convex, with conspicuous apicobasal ridge; height twice the greatest width. Basal margin straight. Tergal margin slightly concave, presenting a lid. Occludent margin convex. Lateral margin convex except for upper concavity to accept apex of upper-latus. Apex curved, slightly superimposed on tergum. Carina (Fig. 13 A, C) arching accentually at apical portion, wider at upper portion, with umbo apical. Tectum strongly concave bordered by high lateral ridges; basal margin W-shaped. Upper-latus (Fig. 13 A) pentagonal with apex curved toward scutum, umbo subapical, projecting. Scutal margin largest, followed in size by tergal, carino- lateral, carinal and, the smallest rostro-lateral margins; scutal margin concave; other margins straight. Carino-latus (Fig. 13 A, C) nearly pentagonal, less than twice higher than wide, with umbo at carinal base, slightly projecting backward; with a ridge from umbo to basal angle and another from umbo to upper-inframedian latera junction. Carino-latera interdigitating with one another below carina. Inframedian-latus (Fig. 13 A) triangular, higher than wide, slightly curved to rostro-latus, shorter than rostro-latus, umbo subapical and projected. Rostro-latus (Fig. 13 A, B) trapezoidal, wider than high, with conspicuous apico-basal ridge; basal one half of distal margin, parallels, umbo projecting slightly backwards. Rostrum (Fig. 13 B) absent. Peduncle (Fig. 13 A) less than half capitulum length, mostly covered by wide, large scales in a sr-l-sc; rl-cl 1 - cl 2 pattern. Labrum (Fig. 14 A) bullate, without teeth. Palp (Fig. 14 A) short, thin, with simple setae on margins. Mandible (Fig. 14 B) with three acute teeth, distance between first and second tooth 1.5 times the distance between second and third; lower angle weakly denticulate. Maxilla I (Fig. 14 C, D) with anterior border having an inconspicuous, shallow, medial notch on one of them and a deep notch on the other; two or three large and 12 - 16 smaller unpaired spines. Maxilla II (Fig. 14 E) nearly triangular with anterior margin nearly straight, covered by numerous simple or finely pinnate setae; papilla of maxillary gland strongly pronounced. Cirrus I (Fig. 15 A) with unequal rami, anterior ramus three quarters length of posterior ramus; former with protuberant articles. Cirrus II to VI with equal, long rami. Median article of cirrus VI (Fig. 15 B, C) twice longer than wide, four pairs of simple or finely pinnate setae, unequal in size, and few fine setulae between pairs on anterior margin; a row of three to seven setulae on lateral surface; two to five setae on posterior angle, sometimes with setae displaced along posterior margin. Setal-article ratio about 3: 1. Caudal appendage (Fig. 15 D) with eight articles, as long as protopodite of cirrus VI; articles with few, long setae on distal margins, and cluster of simple setae on apex. Penis absent. Number of articles of cirri I-VI and caudal appendage is presented in Table 5.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCCFFF7FF2DFAD61A6E64F9.taxon	discussion	REMARKS	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCFFFF0FCF4FDE71FF26658.taxon	description	(Fig. 16)	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCFFFF0FCF4FDE71FF26658.taxon	materials_examined	TYPE MATERIAL. — Syntypes: no locality, the specimens of the type series are very badly preserved. The capitular plates are detached and fouled by fungus. I could only restore two scuta, one terga and two upperlatus, mostly very eroded (MNHN Ci 386). These plates are described below.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCFFFF0FCF4FDE71FF26658.taxon	diagnosis	DIAGNOSIS. — Upper-latus triangular, with a conspicuous longitudinal ridge near scutal margin.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCFFFF0FCF4FDE71FF26658.taxon	distribution	DISTRIBUTION. — Pacific Ocean, locality unknown, fixed on bryozoans.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCFFFF0FCF4FDE71FF26658.taxon	description	DESCRIPTION Tergum (Fig. 16 A) with its surface area larger than scutum; with a slight and wide apicobasal ridge and fine longitudinal striae at mid-occludent basal portion. Basal margin nearly convex. Carinal margin straight. Occludent margin convex. Apex obtuse, nearly straight. Scutum (Fig. 16 B) separated in two surfaces by a conspicuous apico-basal ridge; with carinal portion nearly flat and occludent portion regularly convex, with some little conspicuous longitudinal striae; height about 1.5 time the greatest width. Basal and lateral margins straight. Tergal margin slightly concave. Occludent margin convex. Apex curved. Upper-latus (Fig. 16 C) triangular, umbo apical, not projecting, with a conspicuous longitudinal ridge near scutal margin. Scutal margin straight, others slightly convex, all about same size.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFCFFFF0FCF4FDE71FF26658.taxon	discussion	REMARKS	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC8FFFCFF3FFC361A956078.taxon	materials_examined	TYPE MATERIAL. — “ Scalpellum Bouvieri A Gruvel ” (from label, without any further information). Lectotype by present designation, cl (tl) 6.8 (12.2) mm (MNHN Ci 387); paralectotypes, 2 spec., cl (tl) 8.2 (15.1) and 6.6 (11.0) mm (MNHN Ci 387). — “ Scalpellum Weltneri A Gruvel, Terre de l’Empereur Guillaume II ” (from label). Lectotype by present designation, cl (tl) 4.5 (6.8) mm (MNHN Ci 389); paralectotype, 1 spec., cl (tl) 5.4 (8.1) mm (MNHN Ci 389).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC8FFFCFF3FFC361A956078.taxon	diagnosis	DIAGNOSIS. — Capitulum with smooth plates. Scutum regularly convex without arm. Carina with umbo subapical. Carino-latus twice higher than wide, with umbo at carinal base, not projecting backward. Inframedian-latus hour glass shaped. Rostro-latus higher than wide, with basal and distal margins diverging. Cirrus I with anterior ramus three quarters the length of posterior ramus.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC8FFFCFF3FFC361A956078.taxon	description	DESCRIPTION Capitulum (Fig. 17 A) elongated, length twice the width, occludent margin nearly straight, carinal margin convex. Plates smooth, without longitudinal ridges and thin growth lines, not covering all capitulum, with wide spaces between plates, covered by thick cuticle. Tergum (Fig. 17 A) with its surface area similar to that of scutum; without apicobasal ridge. Basal margin slightly convex. Carinal margin with two concavities and a produced part near apex of carina. Occludent margin convex. Apex obtuse, slightly curved toward carina. Scutum (Fig. 17 A) regularly convex, without apicobasal ridge; height twice the greatest width. Basal margin oblique and concave. Tergal margin concave. Occludent and lateral margins straight. Apex curved, slightly superimposed on tergum. Carina (Fig. 17 A, C) arching accentually apically, wider at upper portion, with umbo subapical. Tectum flat without any lateral ridges, angularly flexed to laterals; basal margin V-shaped. Upper-latus (Fig. 17 A) pentagonal, umbo subapical, projecting. Scutal margin largest, tergal, carino-lateral and carinal with about same length and, the smallest inframedian-lateral margins; scutal margin concave; other margins almost straight. Carino-latus (Fig. 17 A, C) twice higher than wide, with umbo at carinal base, not projecting backward; curving regularly under carina, not forming ridges. Carino-latera not interdigitating with one another below carina. Inframedian-latus (Fig. 17 A) hour glass shaped, higher than wide, umbo displaced a little upper of middle and projected. Rostro-latus (Fig. 17 A, B) quadrangular, higher than wide, curving continuously, without apico-basal ridge; basal one half of distal margin, diverging, umbo not projecting backwards. Rostrum (Fig. 17 B) relatively large, pentagonal, with a triangular median portion and inward projected laterals, not covered by carino-latera. Peduncle (Fig. 17 A) a little shorter than capitulum, mostly covered by wide, large scales initially with a sr-l-sc; rl-cl pattern and posteriorly with a inclusion of one more lateral. Labrum (Fig. 18 A) bullate, without teeth. Palp (Fig. 18 A) short, thin, with simple setae on apex and inner margin. Mandible (Fig. 18 B) with four acute teeth, distance between first and second tooth about same of distance between second and third; lower angle with denticles. Maxilla I (Fig. 18 C) with anterior border with upper portion slightly projected, with two large and two median strong spines, lower portion with 10 median and large spines below. Maxilla II (Fig. 18 D) nearly triangular, covered by numerous simple setae; papilla of maxillary gland not pronounced. Cirrus I (Fig. 19 A) with unequal rami, anterior ramus three quarters the length of posterior ramus; former with more protuberant articles. Cirrus II to VI with equal, long rami. Median article of cirrus VI (Fig. 19 B) almost four times longer than wide, four pairs of simple setae and a small setulae on anterior margin; one setae on posterior angle. Setal-article ratio about 7: 1. Caudal appendage absent. Penis (Fig. 19 C) reduced for a short point, smaller than protopodite. One male attached to inner pouch of scutum. Number of articles of cirri I-VI is presented in Table 6.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC8FFFCFF3FFC361A956078.taxon	discussion	REMARKS Gruvel (1906) described W. bouvieri based on numerous specimens collected during the Discovery Expedition, and this redescription was based only on the three specimens deposited in the MNHN. Gruvel (1906: 272) described the presence of a caudal appendage (“ appendices filamenteux ”) unarticulated, a little longer than the protopodite, and the absence of penis. I could not observe any caudal appendage and the penis was very short, smaller than the protopodite.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC4FFFFFCC9FA161AA561F8.taxon	materials_examined	TYPE MATERIAL. — Lectotype by present designation: “ Scalpellum Vanhoffeni A. Gruvel, Terre de l’Empereur Guillaume II ” (from label), 1 spec. with seven cypris, cl (tl) 4.5 (6.7) mm (MNHN Ci 388).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC4FFFFFCC9FA161AA561F8.taxon	diagnosis	DIAGNOSIS. — Inframedian-latus large, nearly quadrangular, with umbo just below the carino-upper latus angle, strongly projecting from capitulum surface.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC4FFFFFCC9FA161AA561F8.taxon	description	DESCRIPTION Capitulum (Fig. 20 A) subquadrate, length 1.5 time the width, carinal margin angulose, occludent margin straight at mid-basal portion and slightly convex at upper portion. Plates smooth, without longitudinal ridges; with thin growth lines, covering all capitulum, covered by thin cuticle. Tergum (Fig. 20 A) with its surface area a little larger than that of scutum; without apicobasal ridge. Basal margin nearly straight. Carinal margin concave basally and straight apically. Occludent margin slightly convex. Apex obtuse, straight. Scutum (Fig. 20 A) regularly convex, without apicobasal ridge; height nearly twice greatest width. All margins straight. Apex straight, superimposed on tergum. Carina (Fig. 20 A, C) arching accentually apically, wider at upper portion, with umbo at three quarters of its length. Tectum flat without any lateral ridges, angularly flexed to laterals; basal margin rounded. Upper-latus (Fig. 20 A) quadrangular, umbo apical, not projecting. Scutal and tergal of same length, straight; carinal margin slightly convex and carino-lateral margin straight. Carino-latus (Fig. 20 A, C) almost as high as wide, with umbo at carinal base, projecting backward; forming two ridges, one directed to upper region of inframedian-latus and another to base. Carino-latera in contact but not interdigitating with one another below carina. Inframedian-latus (Fig. 20 A) large, nearly quadrangular, with umbo just below the carino-upper latus angle, strongly projecting from capitulum surface, and forming radial ridges directed to scutum and rostro-latus. Rostro-latus (Fig. 20 A, B) trapezoidal, as high as wide, curving continuously, with apico-basal ridge; basal about one half of distal margin, diverging, umbo not projecting backwards. Rostrum (Fig. 20 B) relatively large, with a triangular median portion and inward projected laterals, covered by carino-latera. Peduncle (Fig. 20 A) about half the length of capitulum, covered by wide, large scales initially with a sr-l-sc; rl-cl pattern and posteriorly with an inclusion of one more lateral. Labrum (Fig. 21 A) bullate, without teeth. Palp (Fig. 21 A) short, thin, with simple setae on apex and inner margin. Mandible (Fig. 21 B, C) with four acute teeth, distance between first and second tooth 1.5 times of distance between second and third; fourth tooth on lower angle in one mandible and with another small denticle below in another mandible. Maxilla I (Fig. 21 D) nearly straight with a shallow notch above middle of anterior border, with one large and two median strong spines above notch, and 10 median and small spines below. Maxilla II (Fig. 21 E) nearly triangular, covered by numerous simple setae; papilla of maxillary gland not pronounced. Prosoma (Fig. 22 A) with two short filamentary appendages along dorsal midline, below cirri II. Cirrus I (Fig. 22 B) with unequal rami, anterior ramus three quarters the length of posterior ramus. Cirrus II to VI with equal rami. Median article of cirrus VI (Fig. 22 C) almost four times longer than wide, with four pairs of simple or pinnate setae and small setulae on anterior margin between the long pairs; one or two setae on posterior angle. Setalarticle ratio about 7: 1. Caudal appendage absent. Penis (Fig. 22 D) reduced for a short projection, smaller than coxopodite. Number of articles of cirri I-VI is presented in Table 7.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC4FFFFFCC9FA161AA561F8.taxon	discussion	REMARKS This species was described from various specimens collected during the “ Deustchen Südpolar- Expedition ” of Gauss and the description presented herein is based on one specimen deposited in the collection of the MNHN. The other specimens are deposited at the Museum für Naturkunde, Berlin. Newman & Ross (1971) observed radiating ridges on the capitular plates, but in the specimen studied the ridges are only slightly discernible along the rostro-latus plate. The specimen observed by them is larger (cl 5.4 mm; tl 8.2 mm) than the type specimen studied and probably this ornamentation develops during growth. Gruvel (1909) and Newman & Ross (1971) recorded the presence of unarticulated caudal appendages and the absence of penis. When I dissected the specimen I also supposed I was examining a caudal appendage, but in a detailed examination the single projection between cirrus VI appears to be a reduced penis instead of caudal appendage. It is unpaired and annulated. Ornatoscalpellum vanhoeffeni is recorded from the Antarctic region in two far apart stations: “ Winterstation des Gauss nördlich vom Kaiser- Wilhelm II Land ” (c. 65 ° S, 91 ° E), from 350 - 385 m (Gruvel 1909) and South Orkney Islands, 60 ° 22 ’ S, 46 ° 50 ’ W, 298 - 403 m (Newman & Ross 1971). OTHER SPECIES CONSIDERED SYNONYMS	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC4FFFFFCC9FA161AA561F8.taxon	description	Family CALANTICIDAE Zevina, 1978	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC7FFF8FCF1FB561C5D67F8.taxon	materials_examined	TYPE MATERIAL. — Portugal coast, Talisman, 1883, drag. 1, 1923 m, holotype by monotypy, without peduncle and appendages, in bad conditions, cl 5.5 mm (MNHN Ci 399).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC7FFF8FCF1FB561C5D67F8.taxon	discussion	REMARKS I suppose that Smilium acutum (Hoek, 1883) probably represents a complex of species due to its wide distribution and distinctions between some of its descriptions. But I cannot identify any distinctions between the holotype of S. longirostrum (Fig. 23) and the original description of Hoek for S. acutum. Both species have type localities from the northeastern Atlantic. Therefore, I confirm this synonym previously presented by several authors (Annandale 1910, 1916; Nilsson-Cantell 1921, 1938; Newman & Ross 1971; Zevina 1981 a).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC1FFF9FCD5FF161ABB61E5.taxon	description	(Fig. 26 A)	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC1FFF9FCD5FF161ABB61E5.taxon	materials_examined	TYPE MATERIAL. — East of Azores, Talisman, 1883, drag. 131, 2995 m, lectotype by present designation, cl (tl) 28.3 (36.0) mm (MNHN Ci 381); paralectotype, 1 spec., cl (tl) 26.6 (35.6) mm (MNHN Ci 380). MATERIAL EXAMINED. — No locality, 1 spec., cl (tl) 41.6 (53.8) mm (MNHN Ci 394).	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFC1FFF9FCD5FF161ABB61E5.taxon	discussion	REMARKS This species was described by Gruvel (1900 a). However, he later (Gruvel 1920) considered it a synonym of Amigdoscalpellum rigidum (Aurivillius, 1898), but he continued using the name S. striatum. Afterwards several authors turned to use A. rigidum as the valid name (Zevina 1976, 1981 a; Young 1998 a), except Nilsson-Cantell (1955). The lectotype of this species is herein figured (Fig. 26 A). When the type specimens of S. curvatum, S. talismani and S. striatum are examined, there are no doubts that all are the same species, only being distinct by stages of growth. During capitular plate growth, the inframedian-latus becomes proportionally smaller and the cuticular spaces between the capitular plates enlarge, especially the space between the carina and tergum. Scalpellum alatum Gruvel, 1900	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
482DFA0BFFFDFFC5FCEAFF161DAD61F8.taxon	discussion	REMARKS See above the discussion under Weltnerium bouvieri. OTHER SAMPLES FROM THE ATLANTIC OCEAN Gruvel (1902 a: 53, pl. 2, fig. 3 a; 1902 d: 523) cited the occurrence from the Atlantic (Talisman Expedition, 1883, drag. 138, 46 ° 9 ’ N, 9 ° 16 ’ W, 4787 m, MNHN Ci 368) of Scalpellum gigas Hoek, 1883 (now in Trianguloscalpellum), which was described from the mid-Pacific region (Challenger Expedition, stn 246, 36 ° 10 ’ N, 178 ° 0 ’ E, 3740 m). The single specimen (Fig. 29) carried on some males, which were described in the same study (1902: 126, pl. 3, figs 22 - 26). Due the wide discrepancy between the distribution range of S. gigas and the Gruvel’s record from Azores region, Young (1998 a) considered this citation a mistake and considered it as probably T. ovale (Hoek, 1883), a species similar to T. gigas with an Atlantic distribution. The examination of the specimen identified by Gruvel confirms that this is actually T. ovale (Fig. 29). The general form of the capitulum and the large contact area between the carino-latera agree with the diagnosis of T. ovale. Furthermore, the record of T. gigas from Bay of Biscay of Foster & Buckeridge (1995) is indeed T. ovale. The three specimens from this sample agree with the T. ovale diagnosis.	en	Young, Paulo S. (2002): Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24 (2): 309-345, DOI: 10.5281/zenodo.5403338
