164 M. R. Thorpe — Oregon Tertiary Canidce 



Length of superior tooth-row, with canine 45.5 



Length of superior premolar series 25 



Length of superior molar series 11.2 



Ant.-post. diameter of M 2 5 



Transverse diameter of M 2 8 



Length of inferior premolar series (No. 12681, Y. P. M.) . . 20 



Length of inferior molar series (No. 12681, Y. P. M.) 19 



Cynodictis angustidens (Marsh). 



Parts of rami with teeth, from the John Day formation, 

 have been tentatively identified with this species. The 

 majority of these were collected at Bridge Greek. They 

 are very close to the type and much smaller than C. ore- 

 gonensis. 



Two specimens from the Fossil Horse beds on Cotton- 

 wood Creek, Cat. No. 12696, Y. P. M., are more slender 

 than the type, and the teeth are more crowded. These 

 may represent a new form, more closely allied to C. 

 angustidens than is C. oregonensis, but with, material so 

 fragmentary it seems best to identify them with the for- 

 mer species for the present. 



Nothocyon geismarianus (Cope). 



Remains of this species were collected at Turtle Cove 

 and Haystack Valley from middle John Day strata. The 

 specimens consist of parts of skulls and associated jaws, 

 with both superior and inferior dentition, but unfortu- 

 nately are not well preserved. 



Nothocyon latidens (Cope). 



In the Marsh Collection, a pair of mandibles with teeth, 

 Cat. No. 12794, Y. P. M., represent this species. Both 

 carnassials exhibit "a narrow tubercle at the external 

 base of the principal cusp" which Cope considered diag- 

 nostic of latidens. In addition there is also present a 

 quite small tubercle just anterior to the base of the 

 entoconid. The specimen was found at Turtle Cove in 

 middle John Day strata. 





