R. 8. Lull — Primitive Pecora in Yale Museum. 119 



I can not at present place the new genus elsewhere than 

 in the Hypertragulidse, but it is not clearly derivable from 

 any known Oligocene form except possibly Hypisodus. 



The generic name Nanotragulus refers to its dwarfed 

 size, while the species is named for Professor F. B. 

 Loomis of Amherst College, leader of the joint Amherst- 

 Yale expedition of 1908 during which the type was col- 

 lected, and the first to recognize its unique character. 



References. 



Cope, E. D. 1873A. [On Menotherium lemurinum, etc.] Proc. Acad. Nat. 



Sci., Philadelphia, 25, 419-420. 

 — 1873B. Third notice of extinct Vertebrata from the Tertiary of the 



Plains. Pal. Bull. 16. 

 — 1884. On the structure of the feet in the extinct Artiodactyla of North 



America. Proc. Amer. Philos. Soc, 22, 21-27. 

 —1889. The Artiodactyla. Amer. Nat., 23, 111-136. 

 Leidy, Joseph. . 1873. Contributions to the extinct vertebrate fauna of the 



Western Territories. Kept. U. S. Geol. Survey Terr., 1, 14-358. 

 Matthew, W. D. 1907. A Lower Miocene fauna from South Dakota. Bull. 



Amer. Mus. Nat. Hist., vol. 23, 169-219. 

 Merriam, J. C. and Sinclair, W. J. 1907. Tertiary faunas of the John 



Day region. Univ. Calif., Bull. Dept. Geology, vol. 5, 171-205. 

 Scott, W. B. 1899. The selenodont artiodactyls of the Uinta Eocene. 



Trans. Wagner Free Inst.. Sci., Philadelphia, 6, 1-121. 

 Sinclair, W. J. 1905. New or imperfectly known rodents and ungulates 



from the John Day series. Univ. Calif., Bull. Dept. Geology, vol. 4, 



145-161. 



