240 



BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



OVIS CANADENSIS GAILLARDI, new subspecies. 

 GAILLARD BIGHORN. 



Type-specimen. — Immature female, skin and skull. No. 59906, 

 U.S. Nat. Mus. Collected in the Gila Mountains, between Tinajas 

 Altas and the Mexican Boundary Line, in Yuma County. Arizona. 

 February 21, 1894, by Edgar A. Mearns. (Original number, 3029.) 



Characters. — Size, small: color, peculiar; muzzle, dark colored; 

 feet, very small; horns, long and strongly incurved; space between 

 horns very wide, admitting 2 or 3 fingers. 



< ' i>1 or. — The type (in winter pelage) has the upper parts ecru drab, 

 becoming darker on the nape and front of limbs, and slightly darker 

 on the shoulders, hips, and middle of back; but without a dark ver- 

 tebral stripe. The rump, belly, and posterior surface of limbs are 

 white. The tail is dark brown, this color running forward in a nar- 

 row interrupted stripe toward the .back, dividing the white rump. 



a b c d 



FlG. 35. — OVIS CANADENSIS GAILLARDI. FEET OF ADULT MALE. (Cat. No. 21392, U.S.N. M.) (t AND 6, 



Forefoot; c and d, hindfoot. 



The head and neck, except the dark brown mane, are nearly unicolor, 

 like the back, except that the end of the lower jaw is grayish white. 

 The ears are not much paler than the surrounding parts, except on 

 the inside, which is grayish white. Just behind the white axillae, for 

 a handbreadth, the summer coat has been acquired, and is clay color. 

 The limbs are dark brown (almost seal brown), externally and an- 

 teriorly, and in a broad band posteriorly connecting the accessory 

 and lower hoofs; the remainder white. Iris yellowish hazel. 



An adult female specimen (No. 21392, U.S.N.M.). killed in the 

 same place as the type in April. 1892, is in the short summer pelage. 

 The color is pale, dusty buff, scarcely as dark as clay color, but deep- 

 ening to drab on the neck. The dark line dividing the rump is 

 scarcely perceptible, and there is no dark vertebral stripe. 



The head of an old ram. in the private collection of Maj. D. D. 

 Gaillard, who shot it in the Gila Mountains and presented its feet 

 to the U. S. National Museum (fig. 35), shows the same difference in 



