19 



418 Area inaequivalvis 



419 Indica 



420 senilis; several specimens, of which one is 



enormously large, and one small one a mon- 

 strosity 



421 Brasiliensis 



422 Corhicula 



PECTUJVCULUS. 



423 Pectunculus Glycimeris, several specimens 



424 pilosuSj several specimens 



425 marmoratus 



426 scriptus 



427 rubens 



428 angulatus 



429 pectiniformis 



430 pectin atus 



431 . 



432 



433 



434 



435 decussatus, Area decussata, Chemn. 



VII. t. 67, f. 561. 



JVUCULA. 



436 Nucula lanceolata 



437 margaritacea 



438 Nicobarica 



439 Pella 



440 minuta, auctorum 



CASTALIA. 



441 Castalia ambigua 



