284 OSTREA. 



Ostrea, No. 92. Schroeter Einl. iii. p. 356. 



Siliqua Spengleri. Chemnitz, vii. p. 250. t. 59. f. 578. 



Perna. Eric. Method, t. 175. f. 2 and 3. 

 Inhabits the coasts of the Nicobar Islands. Chemnitz. 

 Shell about fourteen lines long, and four broad ; white, with 



a dark spot near the umbo, and the inside silvery ; the hinge 



is oblique, and has its furrows blackish. 



