22 CALIFORNIA ACADEMY OF SCIENCES [Proc. 3D Ser. 



larger plates separated from the infralabials by i or 2 series of moderately 

 enlarged sublabials; gular region covered with small, smooth, hexagonal or 

 rounded scales which change gradually to granules on sides of neck and to 

 larger imbricate scales on the strong gular fold, largest on denticulate edge 

 of gular fold where somewhat larger than ventrals; several enlarged plates 

 in front of ear-opening; ear denticulation short, of 3 scales, the largest not 

 exceeding in length diameter of largest plate in front of ear; back covered 

 with tubercular scales of nearly uniform size becoming granular toward neck 

 and sides of body, scales of central rows very weakly keeled, not imbricate, 

 not mucronate, often separated by minute granules; scales largest on tail, 

 very weakly keeled, shortly mucronate above and on sides, not imbricate; 

 posterior surfaces of thighs and arms covered with small granular scales 

 similar to those on sides of body; other surfaces of limbs provided with 

 imbricate scales, smooth on arm and nearly smooth on forearm and thigh, 

 keeled on upper surface of leg; femoral pores 15 and 16; 26-30 largest dorsals 

 equal shielded part of head; fifth finger not reaching end of second; 

 fifth toe not reaching end of second; adpressed fore limb not reaching 

 insertion of thigh. 



Head above uniform olive-brown; central portion of the neck, back and 

 and base of tail with a uniform brown ground with thickly scattered dots of 

 pale blue on single scales; sides yellowish brown with scattered scales of 

 pale yellow; upper surfaces of limbs and tail light brown dotted with pale 

 blue; chin and gular region deep indigo with yellowish marks laterally and 

 on labials; lower surfaces of body and limbs grayish indigo; large post- 

 axillary blotch of blackish indigo. 



Female. — Similar in all respects except femoral pores 13 and 15; light 

 dots on back, limbs and tail indistinct; 2 rows of dark brown dorsal blotches 

 becoming i row on tail; an indistinct series of brown lateral blotches; limbs 

 with faint brown cross-bars. 



Sex ? S' (type) 



Length to anus 49 61 



Length of tail 59 76 



Snout to ear 11 14 



Shielded part of head 11 13 



Width of head 10 12 



Fore limb 22 26 



Hind hmb 37 43 



Base of fifth to end of fourth toe 15 18 



Two specimens of this lizard were secured. 



Cerros Island. 



One amphibian and seven reptiles have been recorded 

 from Cerros or Cedros Island. I have no specimens from 

 this island. 



