Rissopsetia islandica Warén, 1989

Figures 90 -91

Rissopsetia islandica sp.n. Warén 1989:24

Rissopsetia cf. islandica Warén - Høisaeter 2009

Type material: Holotype and several paratypes, SMNH 3897 and 3898.

Type locality: Skeidarardypi, off Vatnajökull, southeastern Iceland.

Material seen: Norway – Troms, upper slope, 1 shell.

Diagnosis: Shell: Almost cylindrical shell with distinctly convex whorls and deep sutures. 1.9 mm with four whorls. No visible sculpture. No visible columellar fold. Protoconch at roughly 130° and mostly submerged in first teleoconch whorl. Protoconch of same type as in Chrysallida sublustris. Soft parts: Not known. Operculum: Not known.

Biology: Not known.

Distribution: In my material a single, slightly broken, shell from Bleiksdjupet northwest of Andøya, (69°25’N, 200-700 m, stones and clay). R. islandica was described from southeastern Iceland, and reported also from western and southern Iceland in 200-570 m, and southeastern Greenland, 900 m (Warén 1989).

Remarks: Warén (in litt 2008) confirms that, based on living material, his species is indeed a pyramidellid. My shell from the upper slope near Andøya may be of the same species, although the illustrated types (cf. Figure 91) have strong growth lines not seen in my specimen.