VIII CONTENTS. 



Page. 



Pharella Pealei 496 



Corbula nematophora 496 



Neritina bellatula 497 



patelliformis 498 



carditoides 499 



Bannisteri ,.., 499 



pisum 500 



pisiformis 500 



Adrnete rhomboides 501 



gregaria 501 



subf asiformis 502 



Turritella Coalvillensis 502 



spironema 503 



micronema 504 



Fusus Gabbi 504 



Utahensis 505 



Turbonilla Coalvillensis 505 



Eulima funicula 506 



cbrysallis 506 



incouspicua 507 



Melampus antiquus ■. 507 



Valvata nana 507 



Physa Caiietoui 508 



Ostrea Wyomingensis 508 



Anomia gryphorbynchus 509 



Corbicnla cytheriformis 511 



Bannisteri 513 



Corbula undifera 513 



troiDidophora 514 



G'oniobasis insculpta 515 



Melania Wyomingensis , 516 



Physa Bridgereusis 516 



Limnea compactilis 517 



Pupa Leidyi 517 



Fossil Eeptiles: 



Diplocynodus polyodon .., 614 



Trionyx heteroglyptus 616 



scutumantiquum ; 617 



Plastoinenus multifoveatus 619 



Baena ponderosa 624 



. Emys eutbnetus 628 



megaulax 628 



pachylomus 629 



Fossil Fishes : 



Clastes anax 633 



Pappichtys, gen. nov 634 



plicatus 635 



sclerops 635 



Isevis 636 



symphysis 636 



Corsonii 636 



Phareodon sericeus 638 



Ehineastes radulus 639 



calvus 640 



arcuatus 641 



