MAMMALS OF THE MEXICAN BOUNDARY. 233 



Family BOVID^). 



CATTLE, SHEEP, ETC. 



Frontal appendages, when present, in the form of nondeciduous 

 horns. Molars frequently hjrpsodont. Canines absent in both sexes. 

 The lateral toes may be completely absent, but more often they are 

 represented by the hoofs alone, supported sometimes by a very rudi- 

 mentary skeleton, consisting of mere irregular nodules of bone. Dis- 

 tal ends of the lateral metapodials never present. In the majority of 

 genera the horn cores are present in both sexes, although much larger 

 in the male. {Flower <m<l Lydekker. ) 



Genus OVIS Linnaeus (1758). 



Ovis Linx.kis. Syst. Nat., 10th ed., 1758, p. 7". 



Description. — Horns curving backward and downward in a bold 

 sweep, with the tips everted, generally with more or less prominent 

 transverse ridges, and brownish in color. Suborbital gland and lach- 

 rymal fossa usually present, but generally small. Foot glands in all 

 the feet. Chin not bearded; males without a strong odor. (Flowei 

 and Lydekker.) 



Dentition,— I. g; C. g; P. g; M. g=32. 



Forms of the bighorn or mountain sheep, the only wild sheep of the 

 Mexican Boundary Region, occur in precipitous mountains, ranging 

 from sea level, at the Gulf of California, to the summits of the high- 

 est mountains, its range extending through each of the faunas from 

 the Arid Tropical to the Arctic-Alpine. 



OVIS CANADENSIS MEXICANUS (Merriam). 



MEXICAN BIGHORN OR MOUNTAIN SHEEP. 



Ovis mexlcanus Merriam, Proc. Biol. Soc. Washington, XIV, p. 30, Apr. 5. 

 1001 (original description). — Miller and Rehn. Proc. Bost Soc. Nat. 

 Hist.. XXXI, No. 3, Aug. 27. 1903, p. 72 (Syst. Results Study X. Am. 

 Mam. during the years tool and 1902). — Barber, Proc. Biol. Soc. Wash- 

 ington, XV. Oct. in. 1002. p. 101 (Guadalupe Mountains. New Mexico 

 and Texas, in March, 1901 ). 



[Ovis] cervina mexicanus, Elliot, Field Col. Mus., Zool. Ser., IV. I't. 1, 

 1004. p. SO. pis. xxxiv. xxxv (skull). (Mam. Mid. Am.) 



Pang'-wuh of the Bopi Indians of northeastern Arizona. 



Cimarron of the Mexicans. 



Type-locality. — Lake Santa Maria, Chihuahua. Mexico. 



Geographical range. — North-central Mexico, northward into tin 1 

 mountains of Texas. New Mexico, and Arizona, ranging from the 

 Upper Austral to the Boreal zone. 



