44 STEJNEGER AND BARBOUR, 1923 



Crotaphytus collaris Holbrook 



N. Amer. Herp., Ed. 2, Vol. 2, 1842, p. 79, pi. 10. 

 Crotaphytus collaris (part) Cope 



Ann. Rep. U. &. Nat. Mus., 1898 (1900), p. 248. 

 TYPE LOCALITY : Vcrdigris River near its union with the Arkan- 

 sas River, Oklahoma. 

 RANGE : Arkansas south to middle- western and northwestern 

 Texas and west to eastern New Mexico. 



Crotaphytus collaris baileyi (Stejneger) 

 Croiaphyius baileyi Stejneger 



N. Amer. Fauna, No. 3, 1890, p. 103, pi. 12, fig. 1. 

 Crotaphytus collaris baileyi Stone 



Proc. Ac. Nat. Sei. Phila., 1903, p. 30. 

 Crotaphytus collaris (part) Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 250, fig. 19. 



TYPE locality: Painted Desert, Arizona. 



RANGE : Southwestern Texas, southern and western New Mexico, 

 Arizona, Utah, Nevada, Idaho, southeastern California, north- 

 ern Mexico, and Lower California. 



Crotaphytus dickersonae Schmidt 

 Crotaphytus dickersonae Schmidt 



Bull. Amer. Mus. Nat. Hist., Vol. 46, Dec. 7, 1922, p. 638, fig. 2. 



TYPE locality: Tiburon Island, Gulf of California. 

 RANGE : Same. 



Crotaphytus insularis Van Denburgh and Slevin 



Crotaphytus insularis Van Denburgh and Slevin 



Proc. Calif. Ac. Sci., Ser. 4, Vol. 11, July 30, 1921, p. 96. 



TYPE locality: Angel de la Guarda Island, Lower California. 

 range: Same. 



Crotaphytus reticulatus Baird 

 Crotaphytus reticulatus Baird 



Proc. Ac. Nat. Sci. Phila., 1858, p. 253. 

 Crotaphytus reticulatus Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 254, fig. 20. 



TYPE locality: Laredo and Ringgold Barracks, Texas. 

 range: Extreme southwestern Texas. 



Crotaphytus silus Stejneger 



Crotaphytus silus Stejneger 



N. Amer. Fauna, No. 3, 1890, p. 105. 

 Crotaphytus udslizenii (part) Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 255. 



