11. SATOR 257 



thighs, average in 30 specimens 67.66. Scales on lower 

 surface of body a little smaller than dorsals, smooth, some- 

 times bicuspid on chest, belly and throat. Lateral scales 

 small and keeled, smaller or granular near limbs and on 

 neck, changing gradually to larger dorsals and ventrals in 

 middle of body. A well developed lateral fold usually 

 present between limbs. Scales largest on tail, imbricate, 

 strongly keeled, and mucronate above, below and on sides. 

 Posterior surfaces of thighs covered with small granular 

 scales; other surfaces of limbs provided with imbricate scales, 

 keeled on dorsal surfaces. Femoral pores 11 to 17; average 

 in 100 thighs, 13.43. Fifteen to 18 dorsals equal shielded 

 part of head. IVIales without much enlarged postanal plates. 



The head is uniform olive brown above and laterally, 

 sometimes speckled with light yellow; often pink or brick 

 red in females. The central portion of the neck and the 

 back of the body are grayish, yellowish or dark olive brown 

 with thickly scattered dots of pale blue or yellow. The sides 

 and limbs are brown, slaty or almost black, often with scat- 

 tered scales of pale blue or yellow. In front of the shoul- 

 der is a blackish blotch or collar, bordered with pale blue or 

 yellow, which rarely extends high on the shoulder and usu- 

 ally is not connected with its fellow across the back. The 

 tail is olive or yellowish brown, more or less distinctly 

 ringed with darker brown. Similar cross-bars are often 

 present on the back of the body. The limbs usually are 

 cross-barred. The lower surfaces are yellowish white more 

 or less heavily suffused with gray on the throat, body, limbs 

 and base of tail. The chin and throat often are obliquely 

 banded and the sides of the belly in males are heavily 

 cross-barred with black. 



The female and young have the back dark brown with 

 a central row of light yellowish or bluish spots and a dorso- 



