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Cucullaea labiata is a species of saltwater clam or ark shell, a marine bivalve mollusk in the family Cucullaeidae.[1][2]
The shell of Cucullea labiata is inequilateral and inequivalve, and is thin but not brittle. It grows to about 10 centimetres (3.9 in) in length though 6 centimetres (2.4 in) is a more usual size. The left valve is a little larger than the right and the shape is roughly triangular with a long, rounded margin. The umbo is prominent and slightly nearer the posterior end of the shell. It is on the summit of a triangular cardinal area which has fine sculptured ribs. The rest of the valve has further fine ribs but also concentric sculpturing giving it a reticulated pattern. The black ligament is exterior and the hinge is long and straight. It bears a row of teeth that diverge outwards and a few long teeth at the ends that are nearly horizontal. The exterior of the shell is purplish-brown and the inside white, shaded with reddish-brown posteriorly. The pallial line is faint and there is no pallial sinus. The two adductor scars are asymmetrical. The periostracum is yellowish, velvety and conspicuous and covers the outer surface of the valves.[3]
Cucullea labiata is found in the Indo-Pacific, from northern India to Japan and New South Wales in Australia. It is found buried in sandy or muddy substrates.[3]
View of both valves of Cucullaea labiata (Lightfoot, 1786) Cucullaea labiata is a species of saltwater clam or ark shell, a marine bivalve mollusk in the family Cucullaeidae.
Cucullaea labiata is een tweekleppigensoort uit de familie van de Cucullaeidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1786 door Lightfoot.
Bronnen, noten en/of referenties
圓魁蛤（学名：Cucullaea labiata），中国大陆称作粒帽蚶，台湾称作圓魁蛤，为圓魁蛤科圓魁蛤屬下的一个种。主要分布于中国大陆、台湾，常栖息在浅海沙底。[1]
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