Twenty-five vertebrate species in all, have, hitherto, constituted the Oligocene fauna 

 of the Cypress hills: this number is now raised to over fifty. The following is the fauna as 

 known to date : — 



Class PISCES. 



Order ACTTNOPTERYG-H. 

 Suborder Protospondyli. 



Family Amiidce. 



* Amia whiteavesiana, Cope. 



* Amia macrospondyla, Cope. 

 + Amia exilis, sp. nov. 



Aetheospondyli. 



Le-pidosteidw. 

 + Lepidosteus longus, sp. nov. 



Nematognathi. . 



* + Rhineastes rhceas, Cope. 



* + Amiurus eancellatus, Cope. 



* + Amiurus maconnelli, Cope. 



+ Anosteira ornata f Leidy. 



Siluridce. 



REPTILIA. 



chelonia. 

 Cryptodira. 

 Chelydridaz. 



Testudinidaz. 



* + Stylemys nebraseensis, Leidy. 

 + Testudo exornata, Lambe. 



Trionychia. 



Trionychidce. 



* + Trionyx leucopotamicus, Cope. 



+ squamata. 



Lacertilia. 



Anguidm. 

 + Peltosaurus granulosus, Cope. 



Ophidia. 



Palaiophidw. 

 + Ogmophis compactus, sp. nov. 



+ CROCODILIA 

 EUSUCMA. 



Crocodilidce. 

 + Crocodilus prenasalis ? Loomis. 



The signs before the names of species or groups signify as follows: — 



* Represented inoneor more of the collections made previous to 1904 ; but not in that of 1904. 



+ Represented in collection of 1904 ; but not in previous ones. 

 * + Represented in the 1904 as well as in one or more of the previous collections. ■ 

 12529—2 



