REPTILES OF THE PACIFIC COAST. 93 



or yellowish white, uniform or mottled with slate or 

 gray. All markings are usually more distinct in young 

 than in old specimens, but are very variable in both. 



Length to anus 29 74 S8 88 92 98 



Length of tail 13 40 40 43 38 47 



Snout to ear 8 15 17 18 18 18 



Width of head* 11 26 30 30 30 32 



Length of occipital spine 2 6 10 11 9 9 



Fore limb 14 34 38 39 38 40 



Hind limb 19 44 52 54 52 53 



Base of fifth to end of fourth toe 6 14 15 17 15 15 



Distribution. Blainville's Horned Toad is an inhab- 

 itant of the coastal slopes of San Diego, Riverside, San 

 Bernardino, and Los Angeles Counties, California, 

 where it has been taken at San Diego, Twin Oaks, Oak 

 Grove, Clogstoii's Valley, San Jacinto, Hemet Valley, 

 Banning, Riverside, Lytle Creek, Warren's Wells, 

 Ontario, Pasadena, and Alhambra. It has not been 

 collected on the desert proper and doubtless does not 

 live there, although it is not rare in San Gorgonio Pass. 

 Where it meets P. frontale is not known. 



25. Phrynosoma frontale Van Denburgh. CALIFOR- 

 NIA HORNED TOAD. 



Phrynosoma frontalis, VAN D., Proc. Calif. Acad. Sci., Ser. 2, IV, 

 p. 296 (type locality Bear Valley, San Benito County, 

 California). 



Description. Nostrils open on lines joining supercil- 

 iary ridges with end of snout. Head-spines usually a 

 little smaller than those of P. blainvillii; three to six 

 temporals, one occipital, and one postorbital on each 

 side, and one small interoccipital. Sometimes with 

 small spines above and between temporals and usually 

 in front of occipitals. Temporal scales with ridges run- 



*To tips of temporal spineB. 



