13. PHRYNOSOMA 413 



Length to anus., 

 Length of tail- 

 Snout to ear 



Width of head- 



Length of occipital spines 



Pore limb 



Hind limb . 



Base of fifth to end of 



fourth toe 13 12 14 13 14 14 



Distribution. — This species ranges from Kansas and 

 Colorado south to Texas and northern Mexico and west to 

 New Mexico and southeastern Arizona. 



In Arizona, it has been taken in Cochise County at 

 Douglas, Apache, Bisbee, Fort Bowie, Willcox, Fairbank, 

 and Fort Huachuca. It has been recorded also from Pima 

 (Fort Lowell), Navajo (Apache), and Coconino (Little 

 Colorado River), counties, but these records, doubtless, are 

 based upon specimens of other species. 



Cope (1900) lists specimens from Deseret City and Box 

 Elder, Utah. These records also certainly are erroneous. 



Habits. — Regarding the habits of this horned toad in 

 Texas, Mr. Strecker states that it is "Common along road- 

 sides and in grassy flats and fields. These little horned 

 lizards feed principally on red ants, and some of the speci- 

 mens I have dissected were fairly gorged with these pests. 

 The usual number of eggs deposited by this species is 24. 

 On the 10th of July, 1906, Mr. Whipple, the engineer at 

 the University, discovered a female Phrynosoma preparing 

 her nest in hard earth at the rear of the engine house. He 

 notified me of his find and the next morning we provided 

 ourselves with a spade and pair of heavy shears and went 

 out to collect the set. The hole had been excavated to a 

 depth of seven inches. The eggs formed a compact mass 



