156 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



smaller posteriorly, smallest centrally. The scales on the chest are about 

 as large as the dorsals, smooth and imbricate. The limbs are provided 

 above with keeled scales, and below, except on the forearms, hands, and 

 feet, with smooth scales. The posterior surface of the thigh is covered 

 with smooth imbricate scales. The lateral caudals are strongly keeled and 

 mucronate; while the inferior caudals are smooth proximally, but become 

 keeled on the distal portion of the tail. 



The general coloration in alcohol is brown, with a very dis- 

 tinct greenish-yellow dorsolateral light stripe, and a somewhat less dis- 

 tinct lateral stripe, along each side of the body. There are slight indica- 

 tions of darker brown cross-bars. The head, limbs, and tail are brown, 

 unicolor or with a few small light spots. The lower surfaces are white 

 clouded with brown on the chin, throat, and limbs. There is a black 

 antehumeral blotch. Females lack the light longitudinal streaks. 



Length to anus mm. 79 



Length of tail 127+ 



Snout to ear 17 



Width of head 14 



Fore limb 36 



Hind limb 60 



Base of fifth to end of fourth toe 22 



Height of crest on nape 1.5 



Height of crest on midbody 1 



Height of crest on tail 1.8 



Coloration in life of adult male. — Above olive brown, top 

 of head darker brown; a light stripe two and one-half scales 

 wide beginning behind the eye, running slightly upward above 

 the ear and along the sides to the base of the tail; a narrow 

 stripe of the same color beginning at the axilla and extending 

 along sides to base of thigh. Belly yellowish, red-tinged; 

 breast, tail, and hind limbs below soiled whitish or grayish; 

 throat and lower jaw the same; sides of head grayish; sides 

 of body below the lateral stripes barred yellow and brick red ; 

 a black antehumeral spot. Limbs above spotted with brown 

 and gray ; tail posteriorly light brown. 



Coloration hi life of adult female. — Above golden brown, 

 darker on top of head and along base of dorsal crest; limbs 

 above like the back. Sides of head brownish; sides of throat 

 and body bright brick red; a slaty antehumeral spot with 

 black center. Belly and inferior surfaces of limbs cream; tail 

 yellowish below. Chin greenish; rest of lower jaw, throat, 

 and breast buffy. Eyelids dark blue-green. 



Variation. — The females agree in the faintness or absence 

 of the light dorsolateral band, which is so characteristic of the 

 males of this species. They also lack the black blotch in front 

 of the arm, which the males constantly show except when 

 young. The dark cross-lines on the sublabial region may be 

 indistinct or absent. 



