678 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxm. 



and about thirteen across the supraocular region, the outer ones being 

 almost granules, the median ones larger, irregular hexagonal; a 

 small, blunt spine at posterior end of superciliary margin ; occipital 

 shield scarcely differentiated, surrounded by subequal, keeled scales; 

 tympanum hidden by small scales; fifteen supralabials; mental large, 

 nearly as wide as rostral, triangular; a nuchal fold, but no median 

 series of enlarged scales; upper surface of body covered with small, 

 keeled scales, largest on the middle portion of the back, becoming 

 gradualy smaller on the sides toward the parachute, the larger about 

 the same size as the ventrals; a few dorsodateral enlarged scales 

 barely indicated ; the gular appendage broadly triangular, with pos- 

 terior outline nearly straight, slightly longer than the head, the scales 

 elongate, somewhat increasing in length toward the tip, where they 

 almost reach the size of the ventrals; lateral neck fans very large, 

 with rounded outline, the peripheral scales large and elongate above ; 

 fore legs long and slender, the wrist extending to the tip of the snout; 

 extended hind leg reaches to the shoulder ; posterior edge of tibia and 

 femur strongly serrate, with a group of three large scales at the 

 upper end near the body; tail nearly twice as long as head and body 

 together. Color (in alcohol) above dull grayish brown, almost sepia, 

 with pale rounded spots; on the back about five transverse series 

 of whitish round spots alternating with four transverse series 

 of larger, more conspicuous spots consisting of a median nearly 

 lozenge-shaped spot with a large circular spot on each side; upper 

 side of parachute slightly paler than the l)ack and somewhat more 

 reddish Especially posteriorly, with numerous longitudinal whitish 

 lines narrow and of uneven width, like very elongate bends on fine 

 threads; underside whitish; throat brownish gray with indistinct 

 paler spots ; gular appendage pale yellow, with a fine dusky line on 

 each scale on the anterior margin; no spots on underside of para- 

 chute; limbs and tail above cross-barred, dark grayish brown and 

 whitish in strong contrast. 



Dimensioniii. 



mm. 



Total length 261 



Tip of suont to vent 90 



Vent to tip of tail 171 



Width of head 13 



Fore leg '^^ 



Hind leg 7 55 



Tip of snout to posterior end of jaws 19 



Gular appendage 18 



Remarks.— k\\oi\\QY specimen (Cat. No. 3T387, U.S.N.M., same 

 locality and collector), also an adult male, agrees in all essential re- 

 spects with the type, but the occipital scale is much better differen- 



