26 Records of the Indian Museum. [Voi,. XXIV, 



Lepidosis. Praefrontal not touching the ej^e. Frontal penta- 

 gonal in shape. Length much greater than the snout, three- 

 seconds to four-thirds its breadth, subequal to the parietals. 

 Supraoculars longer than the snout, subequal to the frontal, sub- 

 equal to the parietals. Loreal not touching the eye. Praeocular 

 one. Postocular usually one, sometimes absent being confluent 

 with the subocular ; rarely two. Subocular variable. Some- 

 times one crescentic shield, sometimes confluent with the post- 

 ocular, sometimes divided into three or four. Temporals usually 

 three anterior, the longest about three-fifths to two-thirds the 

 last supralabial. Three or four lie along the parietals. Supra- 

 labials usually 7 or 8 (6 on the right side in specimen No. 8022 in 

 the Indian Museum, 9 on the left side in specimen No. 11434 in the 

 Indian Museum). None touching the eye. The last longer than 

 the two preceding taken together. Costals in 15 rows in the whole 

 body length ; several of the median rows keeled. Vertebrals not 

 enlarged. Mental not touching the anterior sublinguals. Ven- 

 trals 161 to 199. Subcaudals 53 to 92. Specimen No. 12781 in 

 the Indian Museum from the Burma-Siam Hills has 92 (ventrals 

 193). Another, No. 11434 from Deli, Sumatra, has 87 (ventrals 

 187). 



Eye. Diameter less than the supraocular, subequal to the 

 length of the snout. 



Dentition. From the figure in Boulenger's Catalogue. Vol. 

 Ill, p. 438. Maxillary : 5 ; anododont, syncranterian, scaphio- 

 dont. An edentulous space anteriorly that would take two teeth. 

 Palatine : 3 ; anododont, coryphodont. An edentulous space 

 anteriorly that would take two teeth. Pterygoid : 15 ; anododont, 

 scaphiodont. No edentulous space anteriorly. Mandibular : 18 ; 

 anododont, strongly scaphiodont. 



Distribution. Burma : Tenasserim (Mergui ; Tavoy ; Burma- 

 Siam Hills ; Ind. Mus.). Siam {Malcolm Smith). Cochin China : 

 Lao Mountains (Brit. Mus.). Malay Archipelago : Sumatra (Ind. 

 Mus.); Java (Brit. Mus). 



Note. I have examined nine examples in the Indian Museum. 



Amblycephalus hamptoni Boulenger. 



A. hamptoni, Boulenger, J. Bomb. N.H.S. 1905, p. 236. 



Colour. "Pale brown above with numerous blackish bars 

 interrupted on the middle of the back ; two black longitudinal 

 streaks on the back of the head and nape ; sides of head and 

 lower parts yellow ; a few black dots on the belly, and under 

 the tail.' ' 



Length. 555 mm. (1 foot, 9! inches) ; tail 150 mm. (5| inches). 



Lepidosis. Praefrontal touching the eye. Frontal of hexa- 

 gonal in shape Length greater than the snout, equal to its 

 breadth, three-fifths the parietals. Supraoculars length equals 

 the praefrontals, three-fifths the frontal ; two-fifths the parietals. 

 Loreal not touching the eye. One on the right side, two (\) on the 



