292 F. B. Loomis — Ticholeptus Rusticus, etc. 



Principal Literature. 



Barbour, E. H. & Cook, H. J. : 1917. Nebraska Geol. Surv., vol. 7, p. 165-72, 



Metoreoclon. 

 Cope, E. D. : 1884. Proc. Amer. Phil. Soc, vol. 21, p. 503-71, Oreodontidae. 

 Douglass, E. : 1901. This Journal, vol. 11, p. 73-83, New Species of Meryco- 



ehoerus from Montana. 

 —1902. Trans. Amer. Phil. Soc, Philad., p. 237-78, Fossil Mammalia of 



the "White Biver Beds of Montana. 

 — 1907. Ann. Carnegie Mus., vol. 4, p. 84-109, Merycochcerus, Promery- 



cochcerus, and Pronomotherium. 

 —1907. Bull. Amer. Mus. Nat. Hist., vol. 21, p. 809-22, New Merycoido- 



donts from Montana. 

 Hay, O. P.: 1902. Bibliography of Fossil Vertebrates of N. A., U. S. 



Geol. Survey, Bull. 179, for references up to 1900. 

 Leidy, J. : 1848. Proc. Acad. Nat. Sci., Philad., vol. 4, p. 47, first descrip- 

 tion of Oreodont as Merycoidodon. 

 —1869. Jour. Acad. Nat, Sci., Philad., vol. 7, p. 71-141, Extinct Mam- 

 malian Faunas of Dakota and Nebraska. 

 —1873. Eep. U. S. Geol. Survey of the Territories, vol. 1, p. 199-215, 



Extinct Vertebrate Faunas of the Western Territories. 

 Matthew, W. D.: 1901. Mem. Amer. Museum Nat. Hist., vol. 1, p. 395- 



420, ILerycoclwerus propi'ius and related forms. 

 — 1909. Bull. Amer. Museum Nat. Hist., vol. 26, p. 391-5, Metoreodon. 

 Osborn, H. F. : 1909. U. S. Geol. Survey, Bull. 361, Cenozoie Mammal 



Horizons. 

 Peterson, O. A. : 1906. Ann. Carnegie Museum, vol. 4, Miocene Beds of 



Western Nebraska and Wvoming. 

 Scott, W. B.: 1889. Trans. Amer. Phil. Soc, Philad., vol. 16, p. 487-506, 



Mammalia of the Uinta Formation. 

 — 1890. Morph. Jahrb., 16, p. 319-95, Kenntnis der Oreodontidae. 

 —1893. Trans. Amer. Phil. Soc, Philad., vol. 17, p. 125-67, Mammalia 



of the Deep River Beds. 

 —1899. Trans. Wagner Free Inst. Sci., vol. 6, p. 85-121, Selenodont 



Artiodactyls. 



Amherst College, Mass. 



