Brachystomia carrozzai (van Aartsen, 1987 )

Høisaeter, Tore, 2014, The Pyramidellidae (Gastropoda, Heterobranchia) of Norway and adjacent waters. A taxonomic review, Fauna norvegica 34, pp. 7-78 : 26

Brachystomia carrozzai (van Aartsen, 1987)

Figure 28

Odostomia carrozzai nom. nov. pro Od. albella auct., not Lovén, 1846. - van Aartsen 1987:13, Figure 30

Odostomia carrozzai van Aartsen, 1987 - Peñas et al. 1996; Høisaeter 2009

Brachystomia carozzai (van Aartsen) - Smith & Heppell 1991; Schander 1995

Odostomia albella (Lovén) - Alder 1848; Jeffreys 1848, 1859, 1867; Friele 1874; G.O. Sars 1878; Norman 1879; Collin 1880, 1884; Jeffreys 1884; Petersen 1888; Marshall 1899; Høisaeter 1986

Odostomia (Brachystomia) albella (Lovén) - Winckworth 1932

Ptychostomon albellum (Lovén) - Kobelt 1903

Odontostomia (Auristomia) albella (Lovén) - Dautzenberg & Fischer 1925

Brachystomia albella (Lovén) - Fretter et al. 1986; Graham 1988

Chemnitzia pallida (Montagu) (in part) - Clark 1855

Odostomia rissoide s var. albella (Lovén) - Forbes & Hanley 1850 -51

Type material: Holotype USNM 132482 . [ Od. albella (Lovén) Jeffreys. Figured type in Br. Conch.] van Aartsen 1987

Type locality: Not designated, supposedly British Isles

Material seen: Norway - Skagerrak , 1 spm, 5 shs ; Hordaland, 1 spm; Nord-Trøndelag, 2 spms, 2 shs; Nordland, 3 shs. All identifications are tentative .

Description: Shell: Prosocline growth lines as in B. eulimoides . The last whorl narrower and less oval than for this species, around 0.6 of total height (from van Aartsen 1987). Also similar to B. scalaris (with orthocline growth lines) but less turriculate and with less convex whorls. The shell pictured in Figure 28 is the one that came closest to the figure by van Aartsen (1987: Figure 30). Soft parts: Not known. Operculum: Not known.

Biology: Not known.

Distribution: Recorded by Friele (1874) from Manger, and Norman (1879) from Bukkasundet, very shallow water and intertidally. Both records are from around 60°15’N to 60°30’N in the Bergen area. The specimen from Foldafjorden (64°40’N, 60- 20 m, shell gravel with large amounts of tubes of the serpulid polychaete Hydroides ), may be taken as the northern distributional limit for the species. Outside Norway it is known from Sweden and Denmark, the British Isles, and the Atlantic coast of France. Peñas et al. (1996) record several specimens from the western Mediterranean (southern coast of Spain). Van Aartsen et al. (1998) extend the distribution to Canary Islands and the Selvagens archipelago. Schander (1995) mentions a single specimen intermediate between typical B. eulimoides and B. carozzai from the Faroes, but finds it most likely that it is a specimen of the variable B. eulimoides .

Remarks: This is the species traditionally known as Odostomia albella , based on the detailed description of Jeffreys (1867). Already Forbes & Hanley (1853:286) remarked that “…the O. albella of British writers ( Alder 1848 and Jeffreys 1848)…is supposed to be the Turbonilla albella of Lovén, but the identification is not positive”. This problem seems not to have been adressed properly until van Aartsen (1987) studied Lovén’s type specimen of this species, and found it to be a specimen of O. unidentata . Van Aartsen introduced O. carrozzai as a replacement name for O. albella auct., not Lovén, 1846. The conclusion of van Aartsen concerning the misidentification of O. albella is supported by a remark in Fretter et al. (1986) that the specimen illustrated by Thorson (1946) and the shell drawn by Poul Winther supposedly selected by Thorson, both have protoconchs of the O. unidentata type. I base my interpretation on this species on the SEM-photo and description of B. albella in Fretter et al. (1986).