1899] Matthew, Fresh-Water Tertiary of the West. 



31 



III. Wasatch. — Continued. 



PROVIVERRID^. 



Palaeosinopa veterrima Wortman ^ 



Sinopa (Stypolophus) hians (Cope) 



" " strenua (Cope) 



•• *' whitiae (Cope) 



" " viverrina (Cope) 



Sinopa (Stypolophus) multicuspis (Cope) 



" " secutidaria (Cope) 



" " aciileata (Cope)'^ . . 



OXY^NID.'E. 



Oxyaena lupina Cope 



" forcipata Cope 



Oxyivna niorsitans Cope 



PAL.'EONICTID.^. 



Palseonictis occidentalis Osborn and Wortman. 

 Ainblyctonns siiiostts Cope 



MESONYCHID.E. 



Pachyaena^ ossifraga (Cope) 



PachviFna intei-media Wortman ' 



Paciiyaena gigantea Osborn and Wortman 



Dissaciis leptogtiathns O. & W 



ARCTOCYONID.E. 



Anacodoii ursidens Cope 



INCERT.^ SEDIS. 



Didelphodus absaroka Cope 



Didelphys comstocki (Cope) •* 



Diacodon celatus Cope 



' ' alticuspis Cope 



INSECTIVORA. 



LEPTICTID/E. 



Palcsictops ^ ? bicuspis (Cope) 



TILLODONTIA. 



ESTHONYCHID^. 



Esthonyx " burmeisteri Cope 



Esthonyx accr Cope 



' ' bisulcatus Cope 



" spatularius Cope 



1-1 o 



A. M. 



u. s. 



U. S. 

 P. 



u. s. 



A. M. 



U. S. 



U. S. 

 A. M. 



A. M. 

 A. M. 



u. s. 



u. s. 



' Unpublished. 



^ The original type from the Bridger was indeterminate. The species properly dates from 

 Cope's description in 1884 (Tert. Vert.) of a specimen in the Princeton Museum referred to 

 .S. aculeata. 



^ Unworn molars of Pachyana show that it possessed a vestigial metaconid, though less dis- 

 tinct than that of Dissacus ; the original ground for the separation of the two therefore fails. 

 I retain them separate however, believing that a careful comparison will show distinctions of 

 generic importance between them. 



* Generic position very doubtful. 



^ See note on p. 35. ® The species of Esthonyx need revision. 



