210 



BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



to the diagram on page L96, detailed measurements are as follows: 

 A B 290 m*m.,.B C 180. B I) 192, C E 72, C F 54, 1) G 47, D II 67. 

 Another pair (No. 60855, U.S.N.M.) belonged to a fully adult ani- 

 mal, killed at Black Butte, on the Colorado Desert near the "vol- 

 canoes" or mud geysers, Lower California (fig. 26). This was from 

 one of six deer that were killed by Mr. Samuel Cameron, one of our 

 guides, during the winter of 1893-94. The beam is unusually stout 

 and has a length of 310 nun. before forking, and the horns have a 

 total expanse of 775 mm. The horns, which are also doubly dicho- 

 tomous, measure in detail: A B 3-20 mm., B C 130, B D 140, C E 175, 

 C F L30, DG L63, I) II 117. 



Habits and local distribution. — The burro deer of the Western Des- 

 ert Tract probably occurs in all suitable localities — where it can ob- 

 tain food and drink. Indians and Mexicans speak of it as the " burro," 

 or simply " cuervo." When with the Monument Building Party, fol- 



Fig. 26.— Antlers <>k odocoileus hemionus eremicus. (Cat No. 60855, U.S.N.M.) 



lowing the main portion of the survey, I saw two on level land near 

 the base of a mountain near Pozo de Luis, Sonora, Mexico. It was 

 quite common in the mountains (Santa Rosa. Sierra de Sonoyt.i, 

 Cerro Salado, and Sierra de Quitobaquita) near Sonoyta, Sonora. 

 and many horns were exhibited on the huts of the Papagoes. Janu- 

 ary 0, 1804, I shot at a fine buck on Nariz Mountain, where weathered 

 horns were also seen. Bones and its peculiar horns were frequently 

 seen on both sides of the International Boundary in the hills sur- 

 rounding Quitobaquita, Pima County. Arizona. Tracks and re- 

 mains were noted about Gardners Laguna and Indian Wells, on the 

 Colorado Desert. Farther south, in Lower California, the species 

 occurs in huge herds, during the winter season, and is known by the 

 inhabitants to be different from the " black-tailed deer " of the moun- 

 tains of the coast. 



Specimens collected. — Three sets of bones, besides the skin, were 

 presented to the U. S. National Museum by Doctor McGee. 



