794 PROCEEDTXaS OF THE NATIONAL MUSEUM. 



those on pieanal region and imdej.side of tibia still larger; on the 

 underside of the thigh the three posterior rows of scales are overlap- 

 ping considerably sideways so as to appear very niiich narrowed, there 

 being about eighteen such scales in the last row corresponding to the 

 pore bearing scales in other species, but apparently without pores; 

 fingers and toes nearly free, all with a long compressed free terminal 

 joint rising angularly from within the dilated basal portion; the under- 

 side of the latter with two series of oval lamellic i)laced angularly 

 and meeting on the median line, about thirteen i)airs under the fourth 

 toe; a distinct but narrow fold between axilla and groin and a similar 

 one along the posterior margin of the thighs; tail flattened, somewhat 

 constricted at base with a sharp denticulated lateral edge; it is covered 

 above with small squarish scales somewhat laiger than the dorsal 

 ones and arranged in distinct transverse rows, about every tenth one 

 being slightly larger and marking the end of a distinctly perceptible 

 section or verticil which on the lateral edge of the tail is emphasized 

 by a raised claw-like scale or spine, while the minor denticulation 

 of the edge is caused by four smaller but similar scales between 

 every two spines; underneath the tail has a median series of broad, 

 hexagonal, transverse plates, about two to each verticil, a few series of 

 small imbricate scales tilling the space between the plates and the 

 edge, the scale row nearest the plates being considerably larger than 

 the others. 



Color above dark grayish drab with numerous irregular whitish spots, 

 no special pattern being observable, except that there is a whitish 

 transocular stripe, and that on the back the spots seem to be arranged 

 in longitudinal series. The tail has ill defined light crossbars which 

 become gradually more pronounced toward the tip, and the large spines 

 on the edge at the end of each verticil are conspicuously white; whole 

 underside Avhite except the small lateral subcaudals, which are colored 

 like the upper side. 



Dimensions. — Total length, 114 mm.; snout to vent, oO mm.; vent to 

 tip of tail, 04 mm.; snout to ear-opening, 13 mm.; greatest width of 

 head, 8 mm.; fore leg from axilla, 14 mm.; hind leg from groin, lil mm.; 

 axilla to groin, 21 mm. 



Variation. — The chief individual variation noticed in a long series of 

 individuals consists in minor deviations in the size and shape of the 

 chin shields and the internasals. Occasionally there are two smaller 

 internasals in place of one large, or a minute granule is interposed in 

 the cleft of the rostral. 



The reproduced tail does not seem to be different in shape or to be 

 much shorter than the original one (No. 23491, U.S.N.M.; snout to vent, 

 55 mm.; vent to tip of tail, 55 mm.), but the scutellation is different. 

 The scales on the upi^er surface are irreguar and not arranged in rows, 

 much less are there any indications of regular verticils, and there are 

 no spines or serrations along the lateral edge; there are well-developed 



