10. UTA 203 



with dark brown or black. Males usually have a blue patch 

 on each side of the belly and an area of lemon yellow, which 

 sometimes acquires a tinge of blue, on the center of the 

 throat. 



The coloration of living lizards, in Arizona, was noted 

 in March, as follows: 



In Yuma specimens the color in life in both sexes varies 

 on the upper surfaces from light clay to blackish brown. 

 Most males show the blackish collar and dorsal blotches 

 much more clearly than females. Males have a blue area 

 on each side of the belly, absent in 1 9 females. One large 

 male had deep "iron rust" orange covering the entire throat 

 and chin. A smaller male had similar coloring of the 

 throat but with a bright turquoise blue central patch. Five 

 large and two medium-sized males had throats bluish yel- 

 low, varying, without respect to size, from nearly clear blue 

 to faintly bluish lemon yellow. One large and one small 

 male had clear lemon yellow throats. One moderately 

 large male had the throat gray without blue or yellow or 

 orange. Nineteen females had no blue on the throat or 

 sides of belly. Eight females had orange -colored, and 

 eight had lemon-colored, throats j while one large and one 

 small female had the throat orange with lemon center. 



The coloring of living specimens from Tucson shows a 

 similar variation. Females have no blue on belly; males 

 have. The blue of the throat varies from clear turquoise to 

 the green-blue of old turquoises. The throat is blue in 

 13 males; orange in eight females; clear yellow in three 

 males and six females; orange with yellow center in seven 

 males; orange with blue center in eight males; orange with 

 green center in one male; and plain gray in one female. 



The coloration of a fresh specimen from the Grand 

 Canyon is given by Dr. Stejneger as follows: 



Ground color above grayish-drab, more pinkish on tail 



