Talassia coriacea ( Manzoni, 1868 )

Hoffman, Leon & Freiwald, André, 2022, A review of Atlantic deep-water species in the genus Talassia (Caenogastropoda, Vanikoridae), European Journal of Taxonomy 819, pp. 140-157 : 142

Talassia coriacea ( Manzoni, 1868)

Figs 1–3

Rissoa coriacea – Manzoni, 1868: 166–167.

Talassia coriacea – Warén & Bouchet 1988: 93, fig. 47. — Segers et al. 2009: 153, pl. 26 fig. 4–4a.

Material examined

MADEIRA • 1 shell ( Figs 1–3 ); off Funchal; depth 70 m; SaM74968 .

Remarks

The aperture of the shell is relatively large (about 45% of shell height, Fig. 1 ) when compared to other NE Atlantic species (typically less than 40%). The spiral sculpture has fine, rugose and continuous ridges covering the teleoconch ( Fig. 3 ). The species is found on the shelf of the Canary Islands, the Salvage Islands, Madeira and the western and northern Iberian Peninsula down to 200 m ( Segers et al. 2009; Naturalis 2022). Talassia coriacea has been found sympatrically with T. dagueneti and T. tenuisculpta on the shelf of Madeira ( Segers et al. 2009).

Figures

Figs 1–11. Talassia Warén & Bouchet, 1988 from the NE Atlantic. 1–3. Talassia coriacea (Manzoni, 1868), off Funchal, Madeira, depth 70 m (SaM74968). 1. Ventral view, H = 2.7, W = 1.5 mm, Ha = 1.2 mm. 2. Protoconch, Wp = 0.37 mm. 3. Sculpture body whorl. 4–7. Talassia dagueneti (de Folin, 1873), Porcupine Seabight, Galway Mound, POS316-524 (SaM). 4–5. Side view, H = 2.5 mm. 5. Protoconch, Wp = 0.32 mm. 6–7. Ventral view, H = 2.3 mm, W = 1.0 mm. 7. Sculpture body whorl. 8–11. Talassia tenuisculpta (R.B. Watson, 1873), Azores, Mar da Prata, M151-GeoB23111 (SaM). 8–10. Ventral view, H = 2.6 mm, W = 1.3 mm. 9–10. Protoconch, Wp 0.40 mm, arrow indicates lip. 11. Side view, H = 2.3 mm. Scale bars = 0.2 mm.