380 3. IGUANIDM 



"remarks" under the head P. d. douglassH. I am unable to 

 distinguish altitudinal races in Utah. All of the specimens 

 from that state and from Idaho and Nevada seem to be 

 intermediate between P. d. douglassn and P. d. hernandes't. 

 It is convenient, however, to list them under a separate 

 name, P. d. ornatissimum, at least until larger series are 

 available. In series of specimens from the same locality 

 much individual variation is present. Dr. Stejneger regards 

 the Arizona specimens as P. ornatissimum, and those from 

 Utah as P. d. ornatum. 



The rudimentary cephalic horns usually are erect as in 

 P. d. douglassH, though the temporals often, and the occi- 

 pitals sometimes, are as in P. d. hernandesi. All these horns 

 are as a rule larger than in P. d. douglassH and a little 

 smaller than in P. d. hernandesi. The temporal regions 

 may be gray, olive or red. 



Distribution. — To this subspecies are referred hornea- 

 toads from Idaho, Nevada, Utah, northeastern Arizona, 

 Colorado, and northern New Mexico. 



In Utah, specimens have been recorded from Cache (Bear 

 River near Logan), Box Elder (Box Elder Creek), Salt 

 Lake (Fort Douglas, Salt Lake City), Utah (Provo, 

 Springville), Millard (Deseret City, Cove Creek), Beaver 

 (Beaver), Emery (Green River), Grand (Thompson), and 

 Washington (Toquerville), counties. 



In Arizona, this type of horned-toad has been reported 

 from the desert areas of the northeastern part of the state 5 

 the Painted Desert and the Little Colorado River, and Chin 

 I^ee, Apache County. 



In Idaho, it has been collected in Nez Perce (Clearwater 

 River seven miles above Lewiston, Lewiston), Ada (Boise), 

 Butte (Big Butte, Big Lost River, desert at sink of Big Lost 

 River, Arco), Jerome (Shoshone), Cassia (Sage brush plains 



