﻿5 32 8. TE11DJE 



"In the largest specimens from Tucson the four dorsal 

 stripes are faint, and the lower one on either side is occasion- 

 ally very obscure except for rounded spots of lighter at inter- 

 vals. In none of the specimens are they entirely wanting, 

 however." 



Length to anus 73 75 80 83 86 86 



Length of tail 200 194 165 199 173 181 



Snout to ear 18 19 18 21 21 20 



Snout to interparietal 15 15 14 16 17 16 



Width of head 12 11 11 14 14 12 



Fore limb 24 20 21 22 27 25 



Hind limb 52 52 5 3 62 62 58 



Base of fifth to end of 



fourth toe 23 24 25 27 27 26 



Distribution. — This black-throated lizard has been found 

 in many parts of eastern and central Arizona, and probably 

 ranges east into New Mexico and south into Sonora. Defi- 

 nite localities in Arizona are in Pima (Fort Lowell, Tucson, 

 Catalina Mountains, Gunsight, Coyote Springs), Cochise 

 (Fairbank, Huachucha Mountains, Rucker Canyon, Chiri- 

 cahua Mountains), Gila (Roosevelt), and Maricopa (Cave 

 Creek, Tempe) counties. 



From Sonora, Cope has recorded it from Hermosillo, 

 under the name C. t. aethiops. It occurs also at Tepoca 

 Bay, San Pedro Bay, Guaymas, and on Tiburon Island. 



Remarks. — The types of C. melanostethus were said to 

 have been collected near the Colorado River. They have 

 not the intense black throats of many Arizonan specimens 

 and it may be that they do not belong to the form described 

 above, but rather to C. t. tessellatus. Cope's C. t. cethiops 

 from Hermosillo, Sonora, is based upon specimens not dis- 

 tinguishable from those described above. If further study 



