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



five inferior labials, to below middle of the eye ; rostral very broad and 

 low ; symphyseal broad, followed by a series of large sublabials, of which 

 all but the first are separated from the infralabials by a row of smaller 

 plates. Ear-opening large, with an anterior denticulation of five or six 

 long, narrow scales. Side of neck between ear-opening and fore limb 

 with numerous folds, mostly covered with granular scales. A strong 

 antehumeral, but no complete gular, fold. A well-developed median 

 dorsal crest begins a short distance behind the interparietal plate, and runs 

 continuously to and along the tail, being highest on the proximal fourth 

 of the tail. The dorsal regions of the neck, body, and tail are covered 

 with keeled, mucronate scales, which, on die body, change gradually to 

 smaller, keeled, mucronate laterals. These again change gradually into 

 the smooth ventrals, which are considerably smaller than the dorsals. 

 The gular scales are smooth, smaller posteriorly, smallest below the ears. 

 The scales on the chest are largest, smooth, and imbricate. The limbs 

 are provided above with keeled, and below with smooth, scales. The 

 posterior surface of the thigh is covered with smooth sub-granular scales, 

 between which smaller granules may often be seen. 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 coloration in alcohol is olive brown above, spotted, except on the 

 head and tail, with small, rounded, discrete blackish spots, each covering 

 one or more scales. The chin is grayish slate. The gular region and 

 chest are black. The other lower surfaces are grayish yellow. 



Length to anus mm. 137 



Length of tail 163+ 



Snout to ear 16 



Width of head 21 



Fore limb 54 



Hind limb 85 



Base of fifth to end of fourth toe 30 



Height of crest on nape 1.5 



Height of crest on midbody 1 



Height of crest on tail 3 



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

 spotted, except the head, with light yellowish; tail dark red- 

 dish, the crest light brown; hind limbs reddish, light-spotted 

 distally ; fore limbs like the sides of fhe body. Belly medially, 

 and hind limbs and tail inferiorly, dusky-yellow; the belly 

 anteriorly and laterally red. Mandible dark greenish gray, 

 throat black, chest black with large straw-yellow blotches. 

 Fore limbs below proximally like the breast. Sides of head 

 and neck light brown with black blotches; sides of body red- 

 dish, spotted with light yellow; tail brick red on the sides. 



Coloration in life of adult female. — Body and tail above 

 olive brown ; limbs similar in coloration. Sides of belly and 

 tail reddish; a black antehumeral spot. Whole head, throat, 

 and chest brick red, becoming darker on nape and top of 

 head, fading to dull orange on anterior belly; belly and tail 

 and hind limbs inferiorly cream yellow; fore limbs below 

 proximally like the breast. 



