6 Field Columbian Museum 



plates on anterior third of head larger than those of supraocular and 

 parietal regions; three can thai scales, the first one very small, the 

 second largest; six scales forming a suborbital ridge, the fourth much 

 the largest, the anterior scale of this ridge being separated from the 

 labials by five or six rows of small scales, the fourth scale by two 

 rows; superior labials nine, inferior twelve or thirteen; the first five 

 labials margined by a row of Hat scales much larger than those on 

 throat, a second row of large scales between this row and labials 

 posterior to fifth labial; scales on the anterior surface of humerus 

 large, pointed but not keeled; scales of throat and just back of gular 

 fold smaller than the others on under- surface of the head; scales on 

 margin of gular fold slightly enlarged; eyelids margined with scale- 

 like processes, and covered with minute scales; anterior margin of 

 femur and under surface of tibia with enlarged scales ; scales anterior 

 to femoral pores larger than those posterior ; free scales forming the 

 fringe, external side of sole and on fourth toe, larger than those on 

 second and third toes, those on first and fifth toes minute ; scales on 

 dorsal region small and rounded, those on belly flat and larger; lateral 

 scales smallest; anterior margin of the ear with narrow elongated 

 scales; scales on tail similar to those on body, becoming larger pos- 

 teriorly ; males with enlarged post anal scales. 



Color light reticulated with black, forming circles or ellipses on 

 the center of dorsal region, with a brown spot in the center of each ; 

 sides and head spotted with brown and black, under surface of head 

 white with black spots, usually forming three rows on each side, 

 and extending backwards, meeting in the center; throat with two 

 black crescents; a black lateral blotch, and a small black blotch 

 occasionally on each side just behind the inner femoral pores ; under 

 surface of tail with from three to seven black spots. 



Below is given by Mr. Heller the coloration in life of an old male. 

 "Above creamy white blotched with irregular black blotches form- 

 ing occelated spots with black centers, the black marking every- 

 where edged with ferruginous; anterior part of nape and occiput 

 without occellations, the dark spots becoming brownish; head above 

 light brownish, banded irregularly with dusky; tail above brownish 

 color without occellations, anteriorly marked with black reticula- 

 tions, posteriorly with rusty markings extending along median line to 

 the tip; forelegs spotted above with black and rusty on a brownish 

 clay ground, the sjjots becoming ol)S()lete on the phalanges; hind legs 

 light brownish, clay spotted, with rusty on thighs; distally spotted 

 with dusky; sides of head spotted like nape; the sides of body with 

 a large median inky black spot; two similar spots before llic lii nd 



