13. PHRYNOSOMA 413 



Length to anus 76 85 86 88 90 90 



Length of tail 37 32 35 40 38 34 



Snout to ear 15 16 16 17 17 18 



Width of head 27 27 25 31 31 JO 



Length of occipital spines 8 8 8 10 10 8 



Fore limb 39 37 39 41 44 43 



Hind limb 49 48 53 52 55 56 



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 



