Vol. 5] 



Merrianir-S in clair. — Tertiary Faunas. 



189 



Owing to the characteristic color of the matrix of the Middle 

 John Day it has been possible to expand the list of species 

 peculiar to this horizon considerably by an examination of the 

 type material in the Cope collection at the American Museum 

 of Natural History. Judging from the color of the matrix, the 

 following type specimens are probably from the Middle John 

 Day: 



Notltocyon geismarianus (Cope). 



Nothocyon lemur (Cope). 



Ternhocyon altigenis Cope. 



Mesocyon coryphaeus (Cope) 



Archaelums debilis Cope. 



Nimravus gomphodws Cope. 



Steneofiber peninsulatus Cope. 



Steneofiber gradatus Cope. 



Pleurolicus leptophrys Cope. 



Entoptychus planifrons Cope. 



Entoptychus minor Cope. 



Entoptychus lambdoideus Cope. 



Allomys hippodus (Cope). 



Allomys cavatus (Cope). 



Mesqhippus equiceps (Cope). 



Thinohyus (Bothrolabis) pristinus Cope. 



TMnohyus (Bothrolabis) rostratus Cope. 



Eporeodon occidentalis leptacanthus (Cope). 



To these should be added Pogonodon platycopis Cope, the only 

 known specimen of which was collected by Mr. L. S. Davis from 

 the Middle John Day in Turtle Cove. 



Combining both of these lists, the Middle John Day fauna, 

 so far as known, contains the following forms: 

 Temnocyon altigenis Cope. 

 Nothocyon latidens (Cope). 

 Nothocyon lemur (Cope). 

 Nothocyon geismarianus (Cope). 

 Nothocyon geismarianus mollis Merriam, J. C. 

 Mesocyon coryphaeus (Cope). 

 Mesocyon josephi (?) (Cope). 

 Pliilotrox condoni Merriam, J. C. 

 Cynodictis (?) oregonensis Merriam, J. C. 

 Archaelums debilis Cope. 

 Archaelurus debilis major Merriam, J. C. 

 Nimravus gomphodus Cope. 

 Pogonodon platycopis Cope. 

 Allomys nitens Marsh. 

 Allomys hippodus (Cope). 



