Limea sarsi Loven 1846

• Main Author: Allen, J. A.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Bivalvia; Limida; Limidae; Limea; Limea sarsi; Northern Norway; Varanger
• Online Access: https://doi.org/10.5281/zenodo.5252723; http://treatment.plazi.org/id/7A20464EEC0FFFF9FE416972FF45CF12

Limea sarsi Lovén, 1846 (figures 38–41, 46d) Type locality. ?Varanger Fjord, Norway. Syntypes. Six v, SMNH No. 2003. Material examined. Thalassa sta. Z397, 47 ‡ 33.8 ’ N, 07 ‡ 12.6 ’ W, 511 m, 9 spec.; sta. Z399, 47 ‡ 34.8 ’ N, 07 ‡ 18.1 ’ W, 825 m, 3 spec.; sta. Z402, 47 ‡ 39.5 ’ N, 07 ‡ 28.5 ’ W, 450 m, 2 spec.; sta. Z414, 48 ‡ 05.0 ’ N, 08 ‡ 29.8 ’ W, 650 m, 1 spec.; sta. Z420, 48 ‡ 19.8 ’ N, 09 ‡ 37.8 ’ W, 507 m, 1 spec.; sta. Z431, 48 ‡ 38.2 ’ N, 09 ‡ 47.3 ’ W, 800 m, 3 spec. Distribution. Upper slope depths in the north-eastern Atlantic, from Veranger Fjord in northern Norway south to off south-west Ireland. It is supposedly reported further south from off St Helena and from the Mediterranean though these records are almost certainly of the closely related species Limea crassa (see Appendix). Depth range: ca 100– 825 m. Redescription (figures 38, 39, 46d). Shell small (max. recorded height 5.5 mm), height/length ratio 1:0.72, ovate, moderately robust, moderately inflated, equivalve, subequilateral, white, ornamented with 24–27 broad radial ribs extending some distance ventral to umbo in contrast to regular concentric lamellate ridges which extend over entire shell, ventral concentric ridges wavy which crest on ribs producing crenulations, nine central ribs much stronger than those lateral to them, lateral radial ribs grade to being barely discernible; interdissoconch with dorsal-most concentric ridges; ears of shell small without ribs, subauricular sinuses not particularly obvious; umbos prominent; dorsal margin of hinge elongate, straight at oblique angle to central vertical axis of shell; hinge plate narrow with ca 10 short, weak, vertical, teeth, central region without teeth, resilifer elongate, lozenge-shaped with central triangular ligament. Prodissoconch I length~390 M m; interdissoconch ca 1.5 mm. Anatomy (figures 40, 41). Mantle margins extremely broad, in preserved specimens extend over half mantle cavity space, composed largely of middle sensory layer, each bears numerous tentacles and papillae ...