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



Length to anus mm. 85 



Length of tail 116+ 



Snout to ear 18 



Width of head 22.5 



Fore limb 35 



Hind limb 59 



Base of fifth to end of fourth toe 23 



Height of crest on nape 2 



Height of crest on midbody 2.2 



Height of crest on tail 3 



Coloration in life of adult female, Tagus Cove. — "Above 

 brown, spotted with lighter brown except on tail, which is 

 grayish brown. Hind limbs like the tail, fore limbs colored 

 like the back. Belly light grayish, hind limbs and tail in- 

 feriorly the same. Breast pale yellow spotted with black; 

 throat dark, with yellow-edged scales; chin lighter, grayish, 

 dusky spotted; infralabials and mental pinkish. Sides dull 

 brick red, black-spotted; a dark stripe from the ear to the 

 thigh, and another fainter one from the axilla to the thigh. 

 Sides of head and neck brighter red, with a dark antehumeral 

 spot." 



Coloration in life of adult male, Iguana Cove. — "Above 

 olive brown, flecked with pale greenish gray, dorsal crest like 

 spots except on the nape, where it is dark-spotted ; limbs above 

 like the back. Head uniform brownish, sides of body the 

 same, but dark-spotted. Sides of neck tinged with reddish; a 

 black antehumeral spot. Belly pale greenish gray, bordered 

 with brick red on the sides; limbs and tail inferiorly like the 

 belly. Breast chrome yellow spotted with black, the throat 

 clay-yellow, much spotted with black, mandible grayish, labials 

 greenish." 



"The males secured in Iguana Cove show much variation. 

 Those inhabiting the light soil in brushy areas are lighter; in 

 some, the breast being yellowish with a few scattered spots, 

 and the throat grayish. Others taken near the beach, on 

 black basaltic lavas, have the breast, throat, and mandible 

 solid blackish, and the belly plumbeous. Some of the light 

 specimens are considerably lighter above than the one de- 

 scribed, the dorsal crest being entirely light grayish, and sides 

 of the belly dark-spotted, with the dark markings of the back 

 arranged in transverse bars," 



Coloration in life of adult female, Iguana Cove. — "Much 

 darker brown above than the male, with light dorsal crest, 



