Vol. 5] 



Merriam. — John Day Camivora. 



5 



CANIDAE. 



The Tertiary beds of eastern Oregon have furnished a re- 

 markable variety of eanid types compared with other formations 

 in America. Nearly all of these are known from the John Day 

 beds, only two of the eighteen species occurring in the Mascall. 

 Although most of the types represented exhibit some primitive 

 characters, much variation in structure is shown. In some eases 

 the differentiation has led to development of considerably spe- 

 cialized forms. In the following discussion only those species 

 have been touched upon, concerning which additional evidence 

 has been obtained. 



The following are the recognized species occurring in the 



John Day and Mascall: — 



Mascall. 



Can is (?) sp. 



Tephrocyon rurestris Condon. 

 John Day. 



Paradaphaenus cuspigerus Cope. 

 Cynodictis (?) oregonensis, n. sp. 

 Notliocyon geismarianus Cope. 

 Nothocyon lemur Cope. 

 Notliocyon latidens Cope. 

 Mesocyon corypliaeus Cope. 

 Mesocyon brachyops, n. sp. 

 Mesocyon joseplii Cope. 

 Temnocyon altigenis Cope. 

 Temnocyon wattovianns Cope. 

 Temnocyon ferox Eyerman. 

 Philotrox condom, n. gen. and sp. 

 OMgobunis crassivultus Cope. 

 Enhydrocyon stenoceplialus Cope. 

 Hyaenocyon basilatus Cope. 

 Hyacnocyon sectorius Cope. 



CANIS ( ?) sp. 

 Text-figure 1. 



The known material representing this species consists of two 

 well-preserved upper molars in a fragment of a jaw. The teeth 

 resemble those of the coyotes in general form, and are tentatively 

 referred to the genus Cams. They are a little smaller than the 



