168 



Repiilia — continued 



Serpentes — Continued 

 Colubridae 



Cyclagras gig as 

 Fseuaoboa ctoelia 

 Elachistodon loestermanni 

 Thamnophls eJegaiis hammondi 



Acipenseriformes : 

 Acipenseridae 



Osteoglossiformes : 

 Osteoglossidae 



Salmoniformes : 

 Salmonidae 



Cyprinif ormes : 

 Cyprinidae 



Atheriniformes : 

 Cyprinodontidae 



Poeciliidae 

 Coelacanthif ormes 



Coelacanthidae 

 Ceratodiformes : 



Ceratodidae 



PISCES 



Acipenser fidvescens 

 Acipenser sturio 



Arapaima gig as \ 



Stenodus leucichthys Ieucichthy& 

 Scdmo chry so g aster 



Plagoptems argentisshnus 

 Ptychocheilus lucius 



CynoJebias constanciae 

 Cynolebias marmoratus 

 CynoJebias minimus 

 Cynolebias opahscens 

 Cynolebias splendens 

 Xiphophorus couchianus 



Latimeria chalwnnae 



Neoceratodus forstem 



MOLI.USCA 



Naiadoida : 

 Unionidae 



Stylomniatopliora 

 Camaenidae 



Paraphantidae 

 Prosobranchia : 

 Hydrobiidae 



Cyprogenia aberti 

 Epioblasma {=Dysnomia) 



torulosa rangiana 

 Fusconaia subrotunda 

 Lampsilis brevicida 

 Lexingtonia dolahelloides 

 Pleorobema clava 



Papustyla {■=Papuina) 



pulchernma 

 Parai?hantas\)\). +202 



Coahuilix hubbsi 

 C ochliopina milleri 

 Durangonella coahuilae 

 Mexipyrgus cdrranzae 

 Mexipyrgus churinceanus 

 Mexipyrgus escobedae 

 Mexipyrgus lugoi 

 Mexipyrgus mojaii'dlis 



