dcsimg
Image of Limopsis lilliei E. A. Smith 1915
Life » » Animals » » Molluscs » Mussels » » Limopsidae »

Limopsis lilliei E. A. Smith 1915

Description

provided by NMNH Antarctic Invertebrates

Limopsis lilliei, n. sp. Pl. I, fig. 18.

Shell quadrately rounded, rather convex, a little inequilateral, very slightly broader behind than in front, covered with a yellowish pilose periostracum; hairs very short, glossy, golden, crowded, arranged in concentric and radiating series, some of the latter, ½-¾ millim. apart, having coarser setæ than the very delicate intervening series; valves rather thin, a little shorter in front than behind, broadly curved anteriorly, a little higher and less curved posteriorly, ventrally very broadly arcuate, white within, very delicately radiately striated, except a narrow smooth band along the lower margin, and a smooth space on each side defined by a faint ridge enclosing the large subpyriform adductor-scars; margins smooth, not crenate; hinge-plate narrow, three or four denticles on each side of the elongate triangular ligament; umbones obtuse, eroded at the tip.

Length, 14 mm.; height, 13; diameter, 7.

Stations 331, 339. McMurdo Sound, 250 and 140 fathoms.

This species is apparently quite distinct from any of the known Antarctic forms of Limopsis, and is chiefly distinguished by its beautifully and delicately setose periostracum, and also by the unusually broad form. A single valve from Station 339 is rather narrower posteriorly than the type from Station 331.”

(Smith, 1915: 76)