|
|
CARDITIDAE, CARDITINAE |
|
|
Click on an image to enlarge
|
Centrocardita rosulenta (Tate, 1887) Description: Shell fairly solid and heavy, well inflated. Shape Umbo located well in front of midline; anterior dorsal margin concave, posterior dorsal margin convex. Lunule small. Exterior with about 22 scaled radial ribs, interspaces 2-3 times rib width. Interior smooth, muscle scars well defined, pallial line continuous; margin coarsely crenulate. Hinge strong; left valve with a single cardinal tooth and long blade-shaped lateral; right valve with 2 cardinals and a long, slotted lateral. Ligament long, external. Shell colour fawn with thin dark brown periostracum. Interior white. Size: Up to 39 mm high. Distribution: Endemic to Australia. Broken Bay, NSW, around southern Australia, to North-West Cape, WA, including Tas. Habitat: In NSW, known from 150-400 m depth. Occurs shallower in Tasmania and South Australia, where it is occasionally found in beach washup. Comparison: This species is distinguished from Purpurocardia amabilis by its narrower ribs, less dense scales, and by the umbo being located in front of the midline. Fig. 1: Off Green Cape, NSW, 154-157 m (C.122956)
|
|
