WORMS. TESTACEA. 66. Oftrea. 
279 
Inhabits the Indian Ocean and Cape of good hope\ very rare. 
Sihell about 5 inches long, 5 \ broad, blackilh ferruginous or 
purplilh and pearly within ; roundilh, lamellate, with a very 
acute margin. 
^S^men, 
Shell equivalv* thin pellucid and pointed at the hinge, the 
other end dilated : margin very acute. 
Marlin Befch. Maturf, 3 . tab. 23* ^4* 
Ckemn. conch. 7 . tab.^%. dg. 575- , , , 
Inhabits the Red Sea-, more than an inch broad and above z 
long ; yellowifh-brown with paler undulate rays. 
Shell flat hoary thin pellucid lamellate : hinge with an ob- 
lique line ; the interftices of the grooves black. 
Chemn. conch, 7 . tab, 59 . A?’ 57^* ... 
Inhabits Nicobar IJlunds : 4 broad and above 2 inches long • 
near the knob is a livid fpot. 
Shell flat brittle pellucid, and dilated towards the margin : 
hinge with an oblique line ending in a fmall beak. 
Inhabits America, Chemn. coach, 7. tab, 5 ^** 
Shell nearly equivalve ovate vcntricofe ftraight, 
Schreh. berl. Naturf. z. tab. e).fig. 9. 
Found in a foffile date in Alface. 
Shell equivalve intorted. 
Schreb. berl. Naturf. 2 . p, 276. 
Found foflile in Alface. 
Shell equivalve fmooth wedge-fhaped with 6 obtufe plaits. 
Lifer, tab, 17 1 . Gualt test. tab. 74* 
Argewu. conch, tab. zj.fig.h. 
Inhabits -Shell varied with purplilh and white and marked 
with very fine longitudinal ftri® 3 the margin flightly fcalloped- 
67. ANOMIA. 
