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



keeled, mucronate laterals. These again change gradually into the 

 smooth ventrals, which are a little 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 general coloration in alcohol is grayish brown, spotted with 

 black on the fore limbs, back, and sides of neck and body, temples, chin, 

 throat and chest. These black markings tend to form vertical bars on 

 the neck and anterior dorsal region. There is an antehumeral black 

 blotch, and the posterior gular region is mostly black. The head, neck, 

 body, limbs, and tail are speckled with light bluish gray, and a band of the 

 same color runs along the median dorsal region. The hind limbs are not 

 distinctly spotted with black. 



Length to anus mm. 100 



Length of tail 143+ 



Snout to ear 22 



Width of head 17 



Fore limb 45 



Hind limb 69 



Base of fifth to end of fourth toe 25 



Height of crest on nape 1.2 



Height of crest on midbody 1.2 



Height of crest on tail 2.3 



Coloration in life of adult male. — Dorsum grayish brown; 

 the back crossed by several series of transverse black bars, most 

 distinct anteriorly, interrupted medially and on sides. Dorsal 

 crest and the scales at its base light greenish gray; dorsum, 

 tail, and limbs spotted with same. Top of head reddish brown, 

 nape olive brown. Fore limbs brownish, barred above like the 

 back. Tail becoming dusky toward tip, without lighter spots. 

 Chin and sides of mandible pinkish ; throat deep brown ; chest 

 light brown, dark-spotted, the scales with light margins; fore 

 limbs below like the chest, slightly more buffy. Belly, hind 

 limbs, and tail inferiorly light olive gray. Sides of head from 

 snout to ear-opening red, shading into seal brown on the neck. 

 A black antehumeral spot. Sides of body reddish, black- 

 spotted. 



Coloration in life of adult female. — Whole, head, nape, shoul- 

 ders, back anteriorly, and sides of body brick red; fore limbs 

 reddish, becoming olive gray distally. Dorsal crest and median 

 line of back greenish gray; dorsum from middle of back, tail, 

 and hind limbs above olive brown, spotted with the color of 

 the dorsal crest. Belly, tail, and hind limbs inferiorly light 

 olive gray. Breast and sides of body light brick red; throat 

 dark red; lower jaw light like the breast. Fore limbs below 



