AMPHIBIA AND REPTILIA OF COLORADO 65 



males with a large area of bright blue or greenish blue on each side 

 of the anterior portion of the abdomen. 



Range, New Mexico and Colorado west into California. 



Colorado specimens. — University Museum: Rifle, July 2, 1908 (128 mm.), 

 S. A. Rohwer, No. 205; four miles west of Meeker, August 11, 1909 (120 mm.), 

 J. Henderson, No. 206; Colorado State Historical and Natural History Museum: 

 Grand Junction, September 17, 1904 (2 specimens, 70 and 116 mm.), H. G. Smith; 

 reported by Cary, I.e., Sindbad Valley, McElmo and Arboles. 



Uta stansburiana Baird and Girard 

 Stansbury's Swift 

 Uta stansburiana Baird and Girard, Proc. Acad. Nat. Sci. Phila., Vol. VI, 

 p. 69, 1852. 



Uta stansburiana — Cary, N. Am. Fauna, No. 33, p. 26, 191 1 (Mack, Plateau 

 Creek and DeBeque, Colo.). 



Head depressed ; scales of the back small and of a rather uniform 

 size, closely set and weakly keeled; no mid-dorsal rows of enlarged 

 scales; scales on the tail spiny and larger than those of the back; 

 length from tip of snout to vent about 1.5 in the length of the tail; 

 size small, total length usually less than five inches. 



General color dark gray to dark grayish green; dorsal pattern of 

 two irregular rows of dark, more or less crescentic blotches, surrounded 

 by smaller, scattered spots of blue and black ; one or two pale stripes, 

 somewhat interrupted, along each side; a dusky area back of each 

 fore limb, often surrounded by yellowish; ventral parts greenish or 

 yellowish white; under parts of the jaw, bluish. 



A species of the Great Basin, ranging north into Oregon and south 

 into Texas. 



Colorado specimens. — Reported by Cary, I.e., from Desert north of Mack, 

 Plateau Creek, Coventry, Paradox Valley, Salt Canyon, Dolores River Canyon 

 and McElmo, Colo. 



Genus CROTAPHYTUS Holbrook 



Crotaphytus Holbrook, N. Am. Herpetology, Vol. II, p. 79, 1842. 



Scales small; gular fold present; tail much longer than the body, 

 slender and cylindrical; ear openings not covered; femoral pores 

 present; occipital plate small. 



