1913] 



Merriam: 



Notes on the Canid Genus Tephrocyon 



365 



that this is a form closely related to Tephrocyon rurestris and 

 yet is specifically distinct from it. 



Fig. 6. Tephrocyon Mppophagus Matthew and Cook. Lower jaw of 

 type specimen, external view, X % ; and occlusal view of teeth natural size. 

 Am. Mus. N. H., no. 13836. (After Matthew and Cook). 



Tephrocyon temekarius (Leidy) 



Canis temerarius Leidy. Proc. Acad. Nat. Sc. Philad., p. 21, 1858. 

 Canis temerarius Leidy. Jour Acad. Nat. Sc. Philad., vol. 7, p. 29, pi. 

 1, fig. 12, 1869. 



? Tephrocyon cf. temerarius. Matthew and Cook, Bull. Am. Mus. Nat. 

 Hist., vol. 26, p. 376, 1909. 



Tephrocyon temerarius. Peterson, O. A., Mem. Carneg. Mus.. vol. 4, 

 p. 268, 1910. 



The typical material of this species consisted of a piece of 

 a lower jaw containing the carnassial tooth, and a portion of 

 an upper jaw with two teeth both badly preserved. This material 

 was obtained by Dr. Hayden from the Niobrara Sands. The 

 horizon is presumably Upper Miocene. The lower jaw and 

 figured by Leidy 1 show form and dimensions closely similar to 

 those of a specimen obtained by Peterson 2 from beds at Whistle 



i Leidy, J., Jour. Acad. Nat. Sc. Philad., vol. 7, second series, pi. 1, 

 fig. 12, 1869. 



a Peterson, O. A., Mem. Carneg. Mus., vol. 4, p. 268, 1910. 



