98 



Less ventricose than is usual with the species of this group, poste- 

 riorly gradually attenuated into a short blunt beak, and on the ven- 

 tral margin slightly emarginate. 



Ne^ra cochlearis. n. tesid majusculd, ohlongd, albidd, striatd, 

 prope umbones elevatiusculd, antice rotundatd, postice attenuate 

 nasutd, liris angustis, versvs umbones respectantibus ; margine 

 ventrali valde rotundato, postice emarginato, Long. II5; alt. 8 

 lin. 

 Hab. Bais, islaiid of Negros, Philippines ; in seven fathoms, coral 

 sand. 



Cab. Cuming. 



The description is dra\vu up from a single valve, but this is so 

 large, and the characters so marked, as to render its future identity 

 comparatively easy. 



