REPTILES OF THE PACIFIC COAST. 95 



intensity of coloring depending very greatly upon the 

 color of surrounding objects and changing in the same 

 individual in the course of a very few minutes. 



Length to am;s 31 38 55 74 87 89 



Length of tail 10 15 22 34 40 36 



Snout to ear 6 8 11 15 16 17 



Width of head* 9 13 17 23 26 26 



Length of occipital spines 2 3 5 7 6 6 



Fore limb 13 17 24 34 33 36 



Hind limb 17 22 32 47 46 51 



Base of fifth to end of fourth toe 5 7 10 14 13 16 



Distribution. — This lizard occupies a much larger area 

 in California than does Phrynosoma hlainvillii. The 

 most southern localities from which I have seen speci- 

 mens are in Kern County (Fort Tejon, Kernville, 

 Bakersfield). Thence it ranges north across Tulare, 

 Kings, Fresno, Merced, and San Joaquin Counties. 

 Farther west, it has been taken in San Benito (Bear 

 Valley), Monterey (Monterey, Pacific Grove), Santa 

 Clara (Canada Valley, Coyote Creek, Santa Clara, May- 

 field, Los Gatos, Wright's, Morgan Hill), and San Mateo 

 (Searsville) Counties. We do not know how much 

 farther north this horned toad lives, but Dr. Boyle 

 collected one in El Dorado County. It does not occur 

 east of the Sierra Nevada. 



Horned toads from Santa Barbara and Ventura Coun- 

 ties will probably be found to be intermediate between 

 this and the preceding species, in which case this form 

 must be known as Phrynosoma blainvillii frontale. 



Habits. — Their grotesqueness of form, slowness of 

 movement, and the ease with which they may be fed, 

 cause these lizards to be much sought as pets. In con- 

 finement they are usually very docile and become so 

 tame that they will readily take flies or other small 



*To tips of temporal spines. 



