from the Tertiary Formation. 123 
Triacodon fallax, gen. et sp. nov. 
less be necessary to determine its true zoological position. The 
resent species was probably about two thirds the size of the 
Measurements. . 
Antero-posterior diameter of lower premolar, . ---- ---- 2°25 lines. 
Sverse diameter of same, -- - ; Fe oe) eas 
Height of anterior tubercle, ERE GE oy, 
Height of posterior tibercle,....cs0- conse- Seocen--- 16. * 
Height of inner tubercle, ce aR OS 
All the specimens supposed to pertain to this species were 
found by J. M. Russell and the writer, at Grizzly Buttes, near 
the base of the Uintah Mountains. 
Canis montanus, sp. NOV. 
The presence of a large Carnivore in the fossil fauna of the 
Green iver Tertiary basin, which could with comparative 
Viduals, differing somewhat in size. These various remains 
Species is robust, has a short compressed crown. The principal 
cusp is conical, with sub-acute edges, the anterior being about 
twice the length of the posterior, Behind the main cusp there 
18 a large triangular tubercle, with its apex exterior to the fore 
