SYSTEMATIC INDEX, 



XIU 



Gryplixa 395 

 Pecten 395 

 Lima 395 

 Pedum 396 

 Hinnita 396 

 Plagiostoma 397 

 Pachytes 397 

 Dianchora 397 

 Podopsis 397 

 Anornia 397 

 Placuna 398 

 Spondylus 398 

 Plicatula 399 

 Malleus 399 

 Vulsella 399 

 Perna 399 

 Crenatula 400 

 feervilia 400 

 Inoceramus 400 

 Catillus 400 

 Pulvinites 401 

 Ktheria 401 

 Avicula 401 

 Pintadina 401 

 Avicula proper 401 

 Pinna 402 

 Area 402 

 Area proper 403 

 CucuUjea 403 

 Pectunculus 403 

 Nucula 404 

 Trigonia 404 

 Mttiiacea 404 

 Mytilus 405 

 Mytilus proper 405 

 Modiolus 405 

 Lithodomus 406 

 Anodonta 406 

 Iridina 407 

 Dipsas 407 

 Unio 407 

 Hyria 407 

 Castalia 408 

 Cardita 408 

 Cypricardia 408 

 Coralliophaga 408 

 Venericardia 408 

 Crassatella 409 

 Chamacea 409 

 Cbama 409 

 Tridacna 409 

 Tridacna pro- 

 per 410 

 Hippopus 410 

 Chama proper 410 

 Diceras 411 

 Isocardia 411 

 Cahdiacea 421 



