REPTILES AND BATRACHIANS FROM SIAM AND INDO-CHINA. 211 



Description of the type. Vomerine teeth in small, slightly 

 oblique series, commencing from the level of the posterior borders of 

 the choanae, equidistant from them and from each other. No bony 

 prominences to the lower jaw. Head broader than long ; snout 

 rounded, slightly projecting beyond the mouth, as long as the orbit; 

 canthus rostralis distinct, loreal region oblique, slightly concave ; 

 nostril equidistant from the eye and the tip of the snout ; distance 

 between the nostrils twice the interorbital width, which is less than 

 that of the upper eyelid. Tympanum indistinct, less than half the 

 diameter of the eye, li times its distance from the latter. 



Fingers moderate, the tips simply swollen, 1st as long as 2nd, 

 3rd shorter than the snout ; subarticular tubercles moderate. Hind 

 limb long, the tibio-tarsal articulation reaching well beyond the 

 snout; heels strongly overlapping when the limbs are folded at right 

 angles to the body. Toes moderate, the tips dilated into small but 

 very distinct discs, 2/3 webbed, nearly 3 phalanges of the fourth toe 

 free ; no groove on the discs separating the upper from the lower 

 surfaces; no tarsal fold ; subarticular tubercles moderate, inner meta- 

 tarsal tubercle moderate, 3/5 the length of the inner toe ; no outer 

 tubercle. 



Skin quite smooth; posterior half of upper eyelid warty; a 

 glandular fold from the eye to the shoulder: a fine glandular dorso- 

 lateral fold beginning behind the upper eyelid, converging towards 

 its fellow on the shoulders and extending to the hip. 



Brownish or greyish-black above, the sides with small round- 

 ed, jet-black spots; dorso-lateral fold indicated by a thin whitish 

 line, edged outside with black on the forepart of the body ; supra- 

 temporal fold with similar markings, the black band including the 

 tympanum ; lips black with white spots, limbs with black crossbars. 

 Below yellowish white, the throat finely speckled with black, the 

 belly and limbs with larger black spots. 



Nasal bones large and widely separated. 



A second female (No. 5822) collected in the same locality 

 differs in that the vomerine teeth are slightly more prominent, the 



VOL. IV, NO, 4, 1922. 



