IN THE MUSEUM OF COMPARATIVE ZOOLOGY. « 



thirty-six. There are two types of preanals : the first has 

 a median longitudinal series of four or five of which the 

 posterior one is small and the others from the next in front 

 of it decrease in size forward, and at each side of the lon- 

 gitudinal there is a short transverse scries of two scales or 

 more ; the second type has the small posterior scale of the 

 median series separated from the next in front by the mid- 

 dle pair of a continuous transverse row. In the latter the 

 arrangement is similar to that of A. riisii. Four or more 

 rows of small humeral plates, not continuous with the an- 

 tebrachials. Antebrachials in three rows, posterior broad. 

 Post brachials few, largest two equal in size to numerals. 

 Seven or eight rows of femoral plates ; four rows of tibials. 

 Femoral pores twenty-nine to thirty-four. Digits seria- 

 ted ; inner toe a little longer than outer. Caudals keeled. 



Large specimens brownish olive on back and head ; pos- 

 teriorly and on legs and tail freckled with greyish. Throat, 

 chest and arms dark olive, lighter and freckled with light 

 posteriorly ; lower surfaces of legs white. 



On smaller specimens the color of the back is lighter, 

 with faint indications of a series of dark spots on each side 

 of the middle ; the grey plashes are more numerous and 

 distinct and on arms and legs they are smaller, closer to- 

 gether and brighter. The flanks have numerous greyish 

 spots and at the upper edge and on tin; base of the tail there 

 is a dark band with indistinct margins. The lower sur- 

 faces are light olive. 



On some the dark color surrounding the grey spots is 

 more intense; these might be described as reticulated with 

 brown. Very small specimens are without white lines, 

 but the color is somewhat lighter at the upper edge of the 

 dark band on the Hanks. 



I lab. Montserrat. 



