identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03826F0FFFC2E078FF2BD4C30364FEF6.text	03826F0FFFC2E078FF2BD4C30364FEF6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Careproctus cyanogladius Kai, Endo & Nakayama 2021	<div><p>Careproctus cyanogladius Kai, Endo &amp; Nakayama sp. nov.</p><p>New Japanese name: Tsurugi-kon’nyaku-uo</p><p>Figs. 1A, 1B, 2A, 2D, 3A; Table 1</p><p>urn:lsid:zoobank.org:act: 8106F681-65CE-46F9-A7A6-A633F3B731E7</p><p>Holotype. BSKU 96466, 303.6 mm SL, male, 38.4647ºN, 143.5283ºE, off <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=143.5283&amp;materialsCitation.latitude=38.4647" title="Search Plazi for locations around (long 143.5283/lat 38.4647)">Kinkazan</a>, Miyagi, Japan, 3,137–3,223 m depth (KT08-27, St. K-3), R / V Tansei-maru, 23 Oct. 2008, coll. by Hiromitsu Endo and Naohide Nakayama.</p><p>Paratypes. BSKU 96458, 161.9 mm SL, male, 39.5342ºN, 143.6835ºE, off <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-3.201&amp;materialsCitation.latitude=3.15" title="Search Plazi for locations around (long -3.201/lat 3.15)">Miyako</a>, Iwate, Japan, 3,150–3,201 m depth (KT08-27, St. M-4) , R / V Tansei-maru, 22 Oct. 2008, coll. by Hiromitsu Endo and Naohide Nakayama ; BSKU 96474, 203.0 mm SL, female, 38.4748ºN, 143.3470ºE, off <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-2.814&amp;materialsCitation.latitude=2.698" title="Search Plazi for locations around (long -2.814/lat 2.698)">Kinkazan</a>, Miyagi, Japan, 2,698–2,814 m depth (KT08-27, St. K-3) , R / V Tansei-maru, 23 Oct. 2008, coll. by Hiromitsu Endo and Naohide Nakayama .</p><p>Diagnosis. A species of Careproctus with the following combination of characters: vertebrae 63; dorsal-fin rays 57–58; anal-fin rays 50; principal caudal rays 7; pectoral-fin rays 29–31; pectoral fin without notch; uppermost pectoral-fin base below a horizontal through posterior margin of maxillary; pelvic disk oval; cephalic pores 2-6-7-?, chin pores well separated; teeth simple; pyloric caeca 6–10; anus anterior to middle point between posterior rim of pelvic disk and anal-fin origin, slightly closer to pelvic disk than to anal-fin origin; body color pale blue or gray when fresh.</p><p>Description. Counts and measurements are shown in Table 1. Paratype data are given in parentheses if different from the holotype.</p><p>Body slender, compressed, tapering posteriorly, deepest at anus (Fig. 1A, B). Skin thin, fragile, lacking prickles. Head compressed, dorsal profile steep from nape to snout. Snout deep, rounded, slightly projecting anterior to lower jaw. Mouth large, subterminal; maxilla extending to posterior rim of orbit; oral cleft extending to anterior rim of orbit. Premaxillary teeth simple, canine (Fig. 2A), in 7 (6–10) oblique rows. Mandibular teeth simple, canine, in 5 (6–7) oblique rows; inner teeth larger. Diastema absent at symphysis of upper and lower jaws. Orbit rounded, relatively small. Nostril single, with short tube slightly below level of mid-orbit. Cephalic sensory pores small: nasal pores 2, maxillary pores 6, preoperculomandibular pores 7, suprabranchial pores damaged in holotype and all paratypes; cephalic pore pattern 2-6-7-?. Chin pores paired, opening well separately (Fig. 3A). Upper margin of gill slit at level with middle of orbit, lower margin broken in holotype and all paratypes. Gill rakers 11 (10), short. Opercular flap broad, square. Pyloric caeca 10 (6), on center-left side of visceral cavity.</p><p>Vertebrae 63 (11+52). Pleural ribs on abdominal vertebrae 9 and 10 (or 8 and 9). Dorsal-fin rays 58 (57), gradually increasing in height posteriorly. Anteriormost dorsal-fin pterygiophore without ray, inserted between 3 rd and 4 th neural spines; dorsal-fin origin above anus. Anal-fin rays 50, gradually increasing in height posteriorly; anal-fin origin below 9 th dorsal-fin ray. One anal-fin pterygiophore anterior to first haemal spine bearing a single ray (no anal-fin pterygiophore anterior to first haemal spine in paratypes). Membrane of posterior dorsal- and anal-fin rays attached about equidistant on caudal fin. Caudal fin truncate (damaged in holotype). Principal caudal-fin rays 7 (upper 3 and lower 4 in all specimens), single dorsal and anal procurrent rays present. Hypural plates fused with terminal vertebral centrum, slit absent.</p><p>Pectoral fin rounded, with 31 (29–30) rays, 2 nd ray from uppermost longest, just reaching to anal-fin origin (to 2 nd or 3 rd anal-fin ray); rays of lower lobe exserted, tip of longest ray one-third free of membrane; notch absent; uppermost pectoral-fin base below a horizontal through posterior margin of maxillary (Fig. 1A, B); symphysis of pectoral fins below anterior rim of orbit. Pectoral-fin base concave between 20 th and 21 st (21 st and 22 nd or 22 nd and 23 rd) rays from uppermost. Proximal pectoral radials 4, relatively small and rounded, equally spaced (Fig. 2D). No interradial fenestrae between proximal radials. Scapula broad with robust helve. Coracoid rounded dorsally with short thin helve. Distal radials present at base of all pectoral-fin rays, except for uppermost and lowermost rays. Pelvic disk oval, length 1.5 (1.5–1.8) times longer than its width. Anus anterior to middle point between posterior rim of pelvic disk and anal-fin origin, slightly closer to pelvic disk than to anal-fin origin.</p><p>Coloration: Head and body pale blue or gray with dark peritoneum visible through thin skin when fresh (Fig. 1B). Dorsal, anal and pectoral fins pale blue; edges of posterior dorsal and anal fins dark brown; pectoral fin dark brown. Eye black. Body uniformly gray when preserved, and fins pale. Distal margins of dorsal and anal fins dark brown; pectoral fin dark brown. Peritoneum and orobranchial cavity dark brown; stomach and pyloric caeca white.</p><p>Distribution. Western Pacific Ocean, off the Pacific coast of Tohoku District, northern Honshu Is., Japan, in depths of 2,698 –3,223 m.</p><p>Etymology. The specific name “ cyanogladius ” derived from Latin “cyaneus” (blue) and “gladius” (sword), refers to the pale blue coloration and the compressed and elongated sword-like body shape.</p><p>Remarks. Careproctus cyanogladius sp. nov. is most similar to Careproctus gelatinosus (Pallas, 1769), which was redescribed as valid by Chernova (2005) who considered it a senior synonym of Careproctus furcellus Gilbert &amp; Burke, 1912, in having simple teeth, a pectoral fin without a notch, chin pores well separated, and the uppermost pectoral-fin base below a horizontal through the posterior margin of the maxillary (Kido 1988; Chernova 2005). However, C. cyanogladius sp. nov. has fewer vertebrae (63 vs. 67–71), dorsal- (57–58 vs. 61–65) and anal-fin rays (50 vs. 54–59), and pyloric caeca (6–10 vs. 29–49) (Kido 1988; Chernova 2005; this study). The anus of C. cyanogladius sp. nov. is slightly anterior to the middle point between the posterior rim of the pelvic disk and the anal-fin origin, but that of C. gelatinosus is just behind the posterior rim of the pelvic disk. In addition, the fresh coloration readily distinguishes the two species: C. cyanogladius sp. nov. has a pale blue body with dark peritoneum visible through thin skin; C. gelatinosus has a typically pale pink body (Kido 1985; this study) (Fig. 4).</p><p>Careproctus laperousei Chernova, Thiel &amp; Eidus, 2020 is only known from the holotype collected from the northern slope of Kuril-Kamchatka Trench at depth of 4,796 –4,803 m. It is also similar to the present new species in having simple teeth, a pectoral fin without a notch, and chin pores in separated pits (Chernova et al. 2020). The count of pectoral-fin rays in C. laperousei (26) is near the lower end of the range of C. cyanogladius sp. nov. (29–31), but the counts of dorsal- and anal-fin rays and vertebrae of the former are different from the latter (53 vs. 57–58, 45 vs. 50, and 57 vs. 63, respectively). Careproctus laperousei can also be distinguished from the new species by several other characters, including the position of the pectoral fin (uppermost pectoral-fin base at the level of maxillary pores of infraorbital region) and the anteriormost dorsal-fin pterygiophore with a ray (Chernova et al. 2020).</p><p>Among species of Careproctus known from the North Pacific, C. cyanogladius sp. nov. shares a gray or dark body coloration and simple teeth with Careproctus bathycoetus Gilbert &amp; Burke, 1912, Careproctus cypselurus (Jordan &amp; Gilbert in Jordan &amp; Evermann, 1898), Careproctus homopterus Gilbert &amp; Burke, 1912, and Careproctus nigricans Schmidt, 1950 . However, the new species can be readily distinguished from C. bathycoetes by having more pectoral-fin rays (29–31 vs. 22), from C. cypselurus by having a truncated caudal fin (vs. deeply forked), and C. nigricans by the anus position (slightly anterior to the middle point between the posterior rim of the pelvic disk and the anal-fin origin vs. just behind the posterior rim of the pelvic disk) and fewer principal caudal-fin rays (7 vs. 8–10) (Jordan &amp; Evermann 1898; Gilbert &amp; Burke 1912; Schmidt 1950; this study). Gilbert &amp; Burke (1912) described C. homopterus, but apparently were mistaken in describing the holotype as having 32 pectoral-fin rays. The holotype has 21 pectoral-fin rays with a distinct notch, being clearly different from C. cyanogladius sp. nov. (29–31 pectoral-fin rays without a notch).</p></div>	https://treatment.plazi.org/id/03826F0FFFC2E078FF2BD4C30364FEF6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Kai, Yoshiaki;Endo, Hiromitsu;Tashiro, Fumihito;Nakayama, Naohide	Kai, Yoshiaki, Endo, Hiromitsu, Tashiro, Fumihito, Nakayama, Naohide (2021): Two new species of snailfishes of the genus Careproctus (Cottoidei: Liparidae) from the western North Pacific Ocean with a range extension of Careproctus brevipectoralis. Zootaxa 4951 (2): 361-371, DOI: 10.11646/zootaxa.4951.2.9
03826F0FFFC6E07AFF2BD6500500FD6E.text	03826F0FFFC6E07AFF2BD6500500FD6E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Careproctus orri Kai & Endo & Tashiro & Nakayama 2021	<div><p>Careproctus orri Kai &amp;Tashiro sp. nov.</p><p>New Japanese name: Kujira-kon’nyaku-uo</p><p>Figs. 1C, 2B, 2E, 3B; Table 1</p><p>urn:lsid:zoobank.org:act: 05C338DF-2BA4-4EB8-AE56-A7B012BBFE96</p><p>Holotype. NSMT-P 53657, 121.0 mm SL, female, 37.9512ºN, 141.2202ºE, off Miyagi, Japan, 808 m depth, T / V <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=141.2202&amp;materialsCitation.latitude=37.9512" title="Search Plazi for locations around (long 141.2202/lat 37.9512)">Tanshu-maru</a>, 13 Apr. 1996, coll. by Gento Shinohara.</p><p>Paratype. HUMZ 201730, 143.4 mm SL, female, 40.3302ºN, 142.3003ºE, off Iwate, Japan, 640 m depth, 11 Oct. 2007 .</p><p>Diagnosis. A species of Careproctus with the following combination of characters: vertebrae 58–60; dorsal-fin rays 52–53, anteriormost dorsal-fin pterygiophore without ray, inserted between neural spines 3 and 4; anal-fin rays 47–49; pectoral-fin rays 34–35; pectoral fin with distinct notch; cephalic pores 2-6-7-2, chin pores single, unpaired; gill slit extending ventrally to 5 th or 6 th pectoral-fin ray; teeth strongly trilobed; pyloric caeca at least 15 to 21; peritoneum white, stomach dark.</p><p>Description. Counts and measurements are shown in Table 1. Paratype data are given in parentheses if different from the holotype.</p><p>Body humpbacked and compressed, tapering posteriorly, deepest at nape (Fig. 1C). Skin thin, lacking prickles. Head compressed, strongly sloping from nape to snout. Snout blunt, slightly protruding beyond tip of upper jaw. Mouth moderate in size, terminal; maxilla extending to anterior margin of pupil; oral cleft not reaching anterior rim of orbit. Premaxillary teeth strongly trilobed in 11 (9) oblique rows; inner teeth larger (Fig. 2B). Mandibular teeth strongly trilobed in 8 oblique rows; inner teeth larger. Diastema absent at symphysis of upper and lower jaws. Orbit and pupil rounded. Nostril single, with short tube at level with middle of orbit. Cephalic sensory pores small: nasal pores 2, maxillary pores 6, preoperculomandibular pores 7, suprabranchial pores 2; cephalic pore pattern 2-6-7-2. Chin pores single, unpaired (Fig. 3B). Coronal pore absent. Upper margin of gill slit at level with upper portion of orbit, extending ventrally to pectoral-fin ray 5 (6). Opercular flap slightly angular. Pyloric caeca 21 (at least 15 in paratype), on both left and right sides of visceral cavity.</p><p>Vertebrae 60 (58) (11+47–49). Pleural ribs 2, long, present on vertebrae 9–10; anterior rib somewhat slender. Dorsal-fin rays 53 (52). Anteriormost dorsal-fin pterygiophore without ray, inserted between neural spines 3 and 4; dorsal-fin origin above anus, posterior to above tip of opercle. Anal-fin rays 49 (47); anal-fin origin below 8 th dorsalfin ray. Two anal-fin pterygiophores anterior to first haemal spine, each bearing a single ray. Membrane of posterior dorsal- and anal-fin rays attached about equidistant on caudal fin. Caudal fin rounded (broken in paratype). Principal caudal-fin rays 10, single dorsal and anal procurrent rays present (absent). Hypurals and parhypural fused into single plate without slit.</p><p>Pectoral fin deeply notched, with 35 (34) rays; upper lobe of 28 rays extending to anal-fin origin (or just beyond), dorsalmost ray lengthening to 6 th (5 th) ray, more ventral rays gradually shortening to shortest ray of notch; lower lobe with 7 (6) thickened rays extending beyond anus, 6 th (5 th) ray from the ventralmost longest, lower rays exserted; rays in notch slightly more widely spaced than rays of lobes. Uppermost pectoral-fin base level with ventral rim of orbit; symphysis of pectoral-fins below posterior rim of orbit. Proximal pectoral radials 4, relatively small and rounded, upper 3 close together, 4th slightly separated from 3rd (3+1) (Fig. 2E). No interradial fenestrae between proximal radials. Scapula broad with robust helve. Coracoid triangular with broad lamina. Distal radials present at base of all pectoral-fin rays, except for uppermost and lowermost rays. Pelvic disk moderately large, round, below midway between posterior rim of orbit and gill slit. Anus below gill slit, closer to pelvic disk than anal-fin origin.</p><p>Coloration: Live coloration unknown. When preserved, head and body pale brown (Fig. 1C). Fins pale brown, distal margins of dorsal, anal, and caudal fins dark. Peritoneum white; stomach dark.</p><p>Distribution. Western Pacific Ocean, off the Pacific coast of Tohoku District, northern Honshu Is., Japan, in depths of 640– 808 m.</p><p>Etymology. The specific epithet “ orri ” is named for Dr. James W. Orr of Alaska Fisheries Science Center (NOAA), who has contributed greatly to the systematics of snailfishes.</p><p>Remarks. The present new species is most similar to Careproctus rausuensis Machi, Nobetsu &amp; Yabe, 2012 in having trilobed teeth, a cephalic pore pattern of 2-6-7-2, single and unpaired chin pores, a pectoral fin with a notch, and counts of dorsal- (52–53 in C. orri sp. nov. vs. 50–55 in C. rausuensis), anal- (47–49 vs. 45–48), principal caudal- (10 vs. 10–11) and pectoral-fin rays (34–35 vs. 33–37) (Machi et al. 2012; this study). However, C. orri can be distinguished from C. rausuensis in having a humpbacked body (vs. a rounded dorsal profile), relatively small cephalic pores (vs. large pores), and a small gill slit, extending ventrally to pectoral-fin ray 5–6 (vs. a large gill slit, extending ventrally to pectoral-fin ray 7–11) (Machi et al. 2012; this study). The new species is further distinguished from the latter in having a more compressed body (body width: 8.9–10.1% SL vs. 17.0–20.1% SL). Careproctus mollis Gilbert &amp; Burke, 1912, only known from the holotype (off Attu Island in the western Aleutian Islands) and two additional specimens (off Agattu Island in the western Aleutian Islands), is also similar to C. orri sp. nov. in having a humpbacked body, trilobed teeth, a cephalic pore pattern of 2-6-7-2, chin pores in a single pit, a pectoral fin with a notch. Unlike the new species, however, the position of anteriormost dorsal-fin pterygiophore of C. mollis is more posterior, inserted between neural spines 5 and 6 (vs. between 3 and 4 in C. orri). The counts of pyloric caeca and coloration of stomach also distinguish C. mollis (8 and pale, respectively) from C. orri sp. nov. (at least 15 to 21 and dark) (Burke 1930; this study). Careproctus longidigitus Kai &amp; Matsuzaki, 2019 and Careproctus staufferi Orr, 2016 also share the following characters with the present new species: trilobed teeth, a cephalic pore pattern of 2-6-7-2, chin pores in a single pit, and a pectoral fin with a notch (Orr 2016; Kai &amp; Matsuzaki 2019; this study). However, the new species is clearly distinguishable from C. longidigitus in having 34–35 pectoral-fin rays (vs. 28–32) and rays in lower lobe of pectoral fin connected with membrane (vs. filamentous and nearly completely free of membrane) and from C. staufferi in having 58–60 total vertebrae (vs. 44–46), 52–53 dorsal- (vs. 40–42), and 47–49 anal-fin rays (vs. 33–37) (Orr 2016; Kai &amp; Matsuzaki 2019; this study).</p></div>	https://treatment.plazi.org/id/03826F0FFFC6E07AFF2BD6500500FD6E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Kai, Yoshiaki;Endo, Hiromitsu;Tashiro, Fumihito;Nakayama, Naohide	Kai, Yoshiaki, Endo, Hiromitsu, Tashiro, Fumihito, Nakayama, Naohide (2021): Two new species of snailfishes of the genus Careproctus (Cottoidei: Liparidae) from the western North Pacific Ocean with a range extension of Careproctus brevipectoralis. Zootaxa 4951 (2): 361-371, DOI: 10.11646/zootaxa.4951.2.9
03826F0FFFC4E075FF2BD5E30431FADA.text	03826F0FFFC4E075FF2BD5E30431FADA.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Careproctus brevipectoralis Chernova, Thiel & Eidus 2020	<div><p>Careproctus brevipectoralis Chernova, Thiel &amp;Eidus, 2020</p><p>English name: Short-finned snailfish; New Japanese name: Nezumi-kon’nyaku-uo</p><p>Figs. 1E, 2C, 2F, 3C; Table 1</p><p>Careproctus brevipectoralis Chernova, Thiel &amp; Eidus, 2020: 77, figs. 4–5 (type locality: <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=151.082&amp;materialsCitation.latitude=46.948" title="Search Plazi for locations around (long 151.082/lat 46.948)">Kuril Basin</a> of the Sea of Okhotsk, 46.948ºN, 151.082ºE, 3,300–3,301 m).</p><p>Specimen examined. BSKU 96445, 194.6 mm SL, male, 39.5530ºN, 143.4168ºE, off Iwate, Japan, 2,388–2,433 m depth (KT08-27, St. M-3), R / V Tansei-maru, 22 Oct. 2008, coll. by Hiromitsu Endo and Naohide Nakayama .</p><p>Diagnosis. A species of Careproctus with the following combination of characters: vertebrae 55–56; dorsal-fin rays 49–51; anal-fin rays 43–44; pectoral-fin rays 26–28; pectoral fin with distinct notch; cephalic pores 2-6-7-1, chin pores well separated; gill slit entirely above pectoral fin; pleural ribs absent; peritoneum dark, stomach white (Chernova et al. 2020; this study).</p><p>Description of Japanese specimen. Counts and measurements are shown in Table 1. Body elliptic and deep, compressed, tapering posteriorly, deepest at origin of dorsal fin (Fig. 1D). Skin thin, fragile, lacking prickles. Head compressed, dorsal profile rounded from nape to snout. Snout blunt, rounded, with thick gelatinous tissue, projecting anterior to lower jaw. Mouth moderately large, subterminal; maxilla extending to middle of orbit; oral cleft extending to anterior rim of orbit. Premaxillary teeth simple, inner teeth weakly shouldered, in 6 oblique rows; inner teeth of anterior portion of premaxillary weakly trilobed teeth (Fig. 2C). Mandibular teeth simple, inner teeth weakly shouldered, in 6 oblique rows. A narrow diastema present at symphysis of upper and lower jaws. Orbit rounded, relatively small. Nostril single, with short tube at level with middle of orbit. Cephalic sensory pores moderate size: nasal pores 2, maxillary pores 6, preoperculomandibular pores 7, suprabranchial pore 1; cephalic pore pattern 2-6-7-1. Chin pores well separated (Fig. 3C). Gill slit completely above pectoral-fin base, almost equal to eye diameter; upper margin of gill slit at level with dorsal rim of orbit and lower margin with ventral rim of orbit. Gill rakers 9, flattened and undeveloped. Opercular flap slightly rounded posteriorly. Pyloric caeca 14, on centerright side of visceral cavity.</p><p>Vertebrae 56 (9+47). Pleural ribs absent. Dorsal-fin rays 51. Anteriormost dorsal-fin pterygiophore without ray, pterygiophore with anteriormost dorsal-fin ray inserted between neural spines 3 and 4; dorsal-fin origin between levels of opercle and anus. Anal-fin rays 44; anal-fin origin below 8th dorsal-fin ray. One anal-fin pterygiophore anterior to first haemal spine bearing a single ray. Membrane of posterior dorsal- and anal-fin rays attached about equidistant on caudal fin. Caudal fin truncate. Principal caudal-fin rays 9 (5 on upper and 4 on lower hypural plate), single dorsal and anal procurrent rays present. Hypural plates fused with terminal vertebral centrum, upper and lower hypural plate separated by a narrow slit.</p><p>Pectoral fin short, rounded, with 28 rays, 5 th ray from uppermost longest, reaching to midway between anus and anal-fin origin; deep notch present, rays in notch slightly more widely spaced than rays of lobes; rays of lower lobe exserted, longest ray of lower lobe extending to midway between posterior rim of pelvic disk and anus. Uppermost pectoral-fin base level with tip of snout; symphysis of pectoral-fins below posterior rim of orbit. Pectoral radials 4, of moderate, rounded, arranged at nearly equal intervals (Fig. 2F). No interradial fenestrae between proximal radials. Scapula broad with robust helve, posteroventral margin rounded. Coracoid triangular with long thin helve and broad lamina. Distal radials present at base of all pectoral-fin rays, except for uppermost ray and lower 3 rays. Pelvic disk of moderate size, round, below region between posterior rim of orbit and gill slit. Anus about midway between pelvic disk and anal-fin origin, somewhat closer to pelvic disk.</p><p>Coloration: When fresh, head, nape, and belly blackish; ventral side of head gray; body posterior to anus pale gray or pink (Fig. 1E). Dorsal and anal fins colorless, distal margins black; caudal fin colorless, uppermost and lowermost rays black; pectoral fin colorless; pelvic disk gray margined with black. Eye black. When preserved, head and belly dark brown; nape brown; ventral side of head pale brown; body posterior to anus pale brown (skin mostly damaged). Fins white; pelvic disc margined with dark brown. Peritoneum and branchial cavity black; oral cavity pale; stomach white.</p><p>Distribution. Western Pacific Ocean, Kuril Basin of the Sea of Okhotsk and off the Pacific coast of Tohoku District, northern Honshu Is., Japan, in depths of 2,388 –3,301 m (Chernova et al. 2020; this study).</p><p>Remarks. Chernova et al. (2020) described their new species, Careproctus brevipectoralis, on the basis of a single specimen from the Kuril Basin of the Sea of Okhotsk at the depth of 3,300 –3,301 m. The present specimen agreed well with C. brevipectoralis in having a cephalic pore pattern of 2-6-7-1, chin pores in separated pits, no pleural ribs, a short pectoral fin, not reaching to anal-fin origin, and a gill slit completely above the pectoral fin. Furthermore, counts and measurements of the present specimen roughly matched those of the holotype of C. brevipectoralis (Table 1). Chernova et al. (2020) described the holotype as having simple teeth, some with lateral shoulders, and no slit between the upper and lower hypural plate, while our specimen has simple or weakly shouldered teeth on both jaws, except for the anterior portion of premaxillary with weakly trilobed teeth, and a narrow slit between upper and lower hypural plate. Tooth patterns and shapes are useful to distinguish snailfish species (e.g., Stein 1978; Kido 1988), but sometimes can vary with ontogeny (Orr 2012) or by the position on the tooth plate (Kido &amp; Shinohara 1997; Sakurai &amp; Shinohara 2008; Murasaki et al. 2019b). We regard differences between our specimen and the holotype as intraspecific variations, and identified the present specimen as C. brevipectoralis, representing the second and southernmost record of the species.</p><p>Comparisons with other species of Careproctus are well described in Chernova et al. (2020). Among the species of Careproctus known from the North Pacific, Chernova et al. (2020) described the differences between C. brevipectoralis and four other species having a cephalic pore pattern of 2-6-7-1 and similar counts in vertebrae and fin rays: Careproctus sinensis Gilbert &amp; Burke, 1912, Careproctus longifilis Garman, 1892, Careproctus melanuroides Schmidt, 1950, and Careproctus zachirus Kido, 1985 . Although Chernova et al. (2020) noted that the presence or absence of pleural ribs as unknown for these species, the holotypes of C. sinensis and C. zachirus have pleural ribs and are clearly distinguishable from C. brevipectoralis (see Matsuzaki et al. 2020; this study).</p></div>	https://treatment.plazi.org/id/03826F0FFFC4E075FF2BD5E30431FADA	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Kai, Yoshiaki;Endo, Hiromitsu;Tashiro, Fumihito;Nakayama, Naohide	Kai, Yoshiaki, Endo, Hiromitsu, Tashiro, Fumihito, Nakayama, Naohide (2021): Two new species of snailfishes of the genus Careproctus (Cottoidei: Liparidae) from the western North Pacific Ocean with a range extension of Careproctus brevipectoralis. Zootaxa 4951 (2): 361-371, DOI: 10.11646/zootaxa.4951.2.9
