372 3. IGUANID.^ 



{=douglassu Auct. nee Bell) from the wooded plateau 

 region of Colorado, Utah, New Mexico, and Arizona} Ph. 

 urnatissimum, from the desert region of the latter terri- 

 tories; and Ph. brevirostre (Gir. nee Cope), a small edition 

 of Ph. ornatissimum from Wyoming and, in general, the 

 drainage Basins of the Yellowstone and Platte rivers." 



Stejneger & Barbour in their Check List, (1917) rec- 

 ognized these four species: 



Phrynosoma douglassii, with range given as Oregon and 

 Washington. 



Phrynosoma hernandesi, from the plateau region of 

 Colorado, Utah, New Mexico and Arizona. 



Phrynosoma ornatissimum, from the deserts of Arizona, 

 New Mexico and Colorado, and 



Phrynosofna brevirostre, from Wyoming, the Basins of 

 the Yellowstone and Platte rivers. 



To these four Dr. Stejneger recently has added a fifth 

 form, P. douglassii ornatum (Girard), for specimens from 

 Salt Lake City, Utah. 



Cope, in the "Crocodilians, Lizards and Snakes of North 

 America" (1900) referred all these lizards to three races, 

 which he says "do not seem to me to be sufficiently distinct 

 to represent subspecies." These are: 



Phrynosoma douglassii douglassii, which he says "is con- 

 fined to the northern part of the Pacific district," and then 

 lists specimens from Washington, Oregon, Idaho, and 

 Arizona. 



Phrynosoma douglassii hernandesi, "characteristic of the 

 central district generally, and is found abundantly through- 

 out the Great Plains and the Rocky Mountains." This he 

 lists from Washington, Oregon, Utah, Arizona, New Mex- 

 ico, Colorado, Wyoming, Montana, Nebraska, and Kansas. 



Phrynosoma douglassii ornatissimum., from the deserts 

 of Arizona, New Mexico, Texas, Utah. 



