250 BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



in coniact with third supraocular; parietals shorter than frontal, in 

 contact lichind interparietal, which is small, only, little larger than 

 third supraocular; a lon«^ and narrow shield along the outer edge of 

 each parietal; two loreals, the anterior rather small, triangular, and 

 in contact with internasal; a long subocidar in contact with four 

 supralabials, not reaching the edge of the lip ; nine supralabials, fifth 

 longest, sixth directly under the subocular, smaller than seventh; over 

 the seventh labial a large lower postocular; lower temporals large, 

 smooth, upper ones granular, about ten granules and scales in a row 

 between parietals and supralabials; six pairs of enlarged subman- 

 dibulars, or chin-shields, third pair largest, sixth smallest, first three 

 pairs in contact; upper surface covered with small, uniform granules, 

 about 58 in a row across the middle of the back between the ventrals; 

 gulars large flat granules followed by a few rows of smaller ones 

 gradually merging into the flat scales of the lower neck; collar con- 

 sisting of about nine large, smooth scales, of which the median one is 

 the largest; fold behind collar covered with small granules; ventral 

 plates subequal, twelve in a row across the abdomen, and not forming 

 longitudinal series, smooth, about 30 shields 'in a row on the median 

 line between collar fold and groin; anterior aspect of arm with large 

 smooth scales, which on the forearm assume the shape of transverse 

 plates ; anterior aspect of femur and lower side of tibia with a series of 

 broad transverse plates; scales on underside of digits sharply keeled ; 

 a large median preanal plate with a deep cleft behind; a series of 11 

 femoral pores on each side ; tail covered with elongate, squarish, keeled 

 scales arranged in verticels, about 24 in a verticel, a head length from 

 the vent. Color (in alcohol) dull clay-colored above with about eight 

 longitudinal rows of yellowish spots surrounded by a black ring on the 

 back, these ocelli being continued on the base of the tail; underside 

 whitish. 



Dimensions. 



mm. 



Total length 110 



Snout to vent 51 



Vent to tip of tail 59 



Snout to collar 17 



Snout to ear-opening 12.5 



Snout to posterior edge of parietals 11.5 



Greatest width of head 8 



Fore leg 18 



Hind leg 26 



Variation. — The two other specimens (same locality and collector) 

 before me are rather young. Both differ in having the paired pre- 

 frontals touch behind the azygous shield and in having a longer suture 

 between the parietals behind the interparietal. No. 21183 lacks the 

 posterior pair of submentals and in No. 21184 the lower nasal dis- 

 tinctly reaches the rostral; the former has about 65 granules and 



