294- 3. IGUANID.^ 



Length to anus .._._ _ 52 57 5 8 63 65 67 



Length of tail 90 93 89 98 102 105 



Snout to ear 12 12 12^4 13 14- 1 + 



Width of head II 11 10 12 12 12 



Snout to back of 



interparietal 12 12 12 12 14 13 



Fore limb 25 25 23 26 26 26 



Hind limb 39 40 40 40 45 42 



Base of fifth to end of 



fourth toe 16 16 15 15 18 17 



Distribution. — This lizard inhabits a great area which 

 extends from the Dakotas to Texas and from Oklahoma 

 to Arizona. Although it has been recorded from Califor- 

 nia, Nevada, and even Oregon, there is no good evidence 

 of its occurrence in these states. The Utah records also are 

 questionable until confirmed. Cope records it from "So- 

 nora." 



In Arizona, it has been taken in Cochise (Upper Rucker 

 Canyon and Paradise in the Chiricahua Mountains, Bisbee, 

 Fairbank, mouth of Ramsey Canyon in the Huachuca Moun- 

 tains), Santa Cruz (Calabasas), Pima (Tucson, Fort Lowell, 

 8,500 feet on Mount Lemmon, Santa Catalina Mountains), 

 Navajo (Camp Apache), Graham (Fort Grant), Gila 

 (Sierra Ancha), Yavapai (Fort Whipple, Prescott, Fort 

 Verde), and Coconino (Oak Creek, Willams, Flagstaff, San 

 Francisco Mountain, Canyon Spring at the rim of the Grand 

 Canyon), counties. 



Utah records of this species which are based upon mis- 

 Identified specimens of 5. graciosus graciosus, or possibly 

 in part of S. elongatus, are Fairfield (Yarrow) and Prove 

 (Cope), in Utah County, Dome Canyon (Yarrow), in Mil- 

 lard County, San Francisco Mountains (Cope) in Beaver 

 County, Cove Creek (Yarrow), and perhaps Rockville and 

 Springdale in Washington County (C. A. S.). 



