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SEMELIDAE |
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Ervilia
bisculpta
A.A. Gould, 1861 Description:
Shape elongate-ovate, both ends rounded. Umbo on midline. Exterior
polished, with weak irregular commarginal growth ridges. Radial
riblets at posterior quarter and anterior tenth. Interior with
muscle scars and pallial line usually indistinct; pallial sinus reaching
midline; lower limb of pallial sinus confluent with posterior end of
pallial line. Hinge with narrow low cardinal tooth in left valve
and strong prominent cardinal in right valve. Laterals in both
valves. Ligament in 2 parts; dorsal part exterior, ventral
part attached in triangular pit in front of cardinal tooth. Shell
colour white. Size:
Up to 7 mm in length. Distribution:
Indo-West Pacific, from East Africa to Hawaii. In Australia, from
southwestern WA, around northern Australia to Sydney, NSW. Habitat:
Beach washup and dredged down to 50 m. Synonymy:
Ervilia australis Angas, 1877 and Ervilia japonica A. Adams, 1862 are
synonyms. Fig.
1: Western Channel, Port Jackson, NSW (C.224126) |
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