1912] Grinnell: The Bighorn of the Sierra Nevada 153 



LITERATURE CITED 



Allen, J. A. 



1912. Historical and nomenclatural notes on North American sheep. 

 Bull. Amer. Mus. Nat. Hist., 31, pp. 1-29, 4 figs, in text. 



Elliot, D. G. 



1903. Descriptions of twenty-seven apparently new species and sub- 

 species of mammals, all but six collected by Edmund Heller. 

 Field Columbian Mus., zool. ser., 3, pp. 239-261, 2 figs, in text. 



Merriam, C. H. 



1897. Ovis nelsoni, a new mountain sheep from the desert regiou of 



southern California. Proc. Biol. Soc. Wash., 11, pp. 217 218. 

 1S99. Results of a biological survey of Mount Shasta, California. 



Dept. Agric, Div. Biol. Surv., N. Amer. Fauna, 16, ISO pp., 



5 pis., 46 figs, in text. 

 1901. Two new bighorns and a new antelope from Mexico and the 



United States. Proc. Biol. Soc. Wash.. 14, pp. 29-32. 



Stephens, F. 



1906. California mammals (San Diego, West Coast Publishing Co.), 

 351 pp.. frontispiece, many figures in text. 



Transmitted March 28. 1912. 



