214 BULLETIN If) 4, UNITED STATES NATIONAL MUSEUM 



usually 3, somotiuies 4; supraocular <>raiiuk's not extending forward 

 past (he posterior border of the second supraocular; frontoparietals 

 normally 2, sometimes 3; anterior jjulars moderate, often uniform, 

 but sometimes with a few enlarged scutes laterally or medially; 

 posterior gulars small, a few median granules slightly enlarged; 

 mesoptychial scales moderate, nearly uniform, in about 7 transverse 

 rows; a series of postmesoptychial granules present on the posterior 

 gular fold. 



Body elongate; ventral plates in 8 longitudinal and 32-35 trans- 

 verse rows; dorsal granules small; limbs moderately long, well de- 

 veloped ; brachials 4-G ; antebrachials 2 ; brachials and antebrachials 

 usually continuous at a point of contact; postantebrachium usually 

 Avith a few enlarged granules; femorals G-8; tibials 3; femoral pores 

 15-18; tail elongate, tapering; caudal plates large, oblique, and with 

 rather strong lateral longitudinal keels. 



Coloration distinctive ; under surfaces usually suffused with much 

 blackish; gular region usually slaty or smoky; tail brownish above, 

 unspotted, and wdth a blackish tip ; back and upper surfaces of hind 

 limbs with rather numerous and obscure small yellowish spots; dor- 

 sal ground color usually a moderate deep brownish ; pattern spotted, 

 without longitudinal or transverse arrangement; ground color more 

 intense anteriorly; a few distinct light spots in sharp contrast to 

 the deeper blackish of the sides; spots or indications of spots pres- 

 ent in the region above the level of the tympanum and anterior to 

 the insertion of the forearms. 



In the young the characteristic yellowisli spots are more numerous 

 and better defined than in the adult, and they extend from the oc- 

 cipital region (where they are often poorly defined) to the insertion 

 of the tail. The spots seem to grow" more and more indistinct with 

 age, but always cover the sides of the back to a significant distance. 

 They appear in front of the forearms, especially on the sides. 

 The coloration of the under surface of the body varies from greenish 

 to black. The color of the gular region is in most cases lighter 

 than that of the chest. The abdominal region of one individual, 

 C.A.S. No. 52330, is covered with numerous more or less well de- 

 fined light spots on a blackish background, but usually light spots 

 are few or absent. 



Only 13 specimens of this form have been examined, and their data 

 may be summarized as follows: Body, 48-80 mm.; tail, 131-190; 

 total length, 1Y9-268; length of tail as percentage of total length, 

 69.0-T3.4; width of head, 7-12; width of head as percentage of body 

 length, 12.8-15.0; hind leg, 33-49; length of hind leg as percentage 

 of body length, 61.3-69.0; frontoparietals, 2 in 11 specimens, 3 in 

 2 specimens; supraoculars, 3-4 in 2 specimens, 4 in 11 specimens; 

 supraocular granules extending forward to the center of the third 



