19 



418 Area iiifequivalvis 



419 Indica 



420 senilis; several specimens, of which one is 



enormously large, and one small one a mon- 

 strosity 



421 Brasilicnsis 



422 Corbicula 



PECTUj\CULUS. 



423 Pectunciilus Glycimeris, several specimens 



424 pilosus, several specimens 



425 marmoratus 



426 scriptus 



427 rubens 



428 anijulatus 



429 pcctiniformis 



430 pectinatus 



431 



432 



433 



434 ■ 



435 dccussatus, Area decussuta, C'liemn. 



VII. t. 57, f. 561. 



:^UCIJLA. 



436 Nucula lanccolata 



437 niarg;aritacea 



438 Nicobarica 



439 PeHa 



440 minuta, auctorwu 



C.4STALL4. 



441 Castalia ambigua 



