224 3. I GU AN IBM 



arated (except first) from the infralabials by one or two 

 series of moderately enlarged sublabials. Gular region 

 ered with small, smooth, hexagonal or rounded scales which 

 change gradually to granules on sides of neck and to larger 

 imbricate scales on strong gular fold, largest on denticulate 

 edge of gular fold where somewhat larger than ventrals. 

 Several enlarged plates in front of ear-opening. Ear den- 

 ticulation short, of two to four scales, the largest exceeding 

 in length diameter of largest plate in front of ear. Back 

 covered with very small scales of nearly uniform size be- 

 coming granular toward neck and sides of body, scales of 

 central rows very weakly keeled, imbricate, not or weakly 

 mucronate, rarely separated by minute granules. Scales 

 largest on tail, strongly keeled, strongly mucronate above 

 and on sides, imbricate. Posterior surfaces of thighs and 

 arms covered with small granular scales similar to those on 

 sides of body; other surface of limbs provided with imbri- 

 cate scales, keeled on arm, forearm, thigh, and upper sur- 

 face of leg. Femoral pores 13 to 16; average in 20 thighs, 

 14.5. Twenty-three to 27 largest dorsals equal shielded 

 part of head. About 110 to 120 scales in a row between 

 interparietal plate and backs of thighs. Fifth finger not 

 reaching end of second; fifth toe not reaching end of sec- 

 ond; adpressed fore limb not reaching insertion of thigh. 



The color above is grayish or light blue becoming yel- 

 lowish or olive on the head and tail, without any dark or 

 light markings except sometimes a few scattered pale blue. 

 dots on single scales. A large blackish blue blotch behind 

 the axilla, and often another smaller blotch of the same 

 color in front of shoulder. The chin and gular region are 

 deep indigo with yellowish markings or suffusion laterally 

 and on the labial plates. The lower surfaces of the body 

 and limbs are indigo throughout, or grayish or yellowish 



