Batrachians and Reptiles from Peralc. 187 



A single specimen was obtained in the Larut Hills at an 

 altitude of 3500 feet. Selangor Museum. 



This species is closely allied to L. pelodytoides, Blgr., from 

 which it may be distinguished by the lesser web and the 

 extraordinary dermal ridges under the toes, a point of struc- 

 ture which is only foreshadowed in the types of L. pelodytoides. 



IxaJus larutensis. 



Snout rounded or obtusely pointed, as long as the diameter 

 of the orbit ; canthus rostralis distinct ; loreal region concave ; 

 nostril a little nearer the end of the snout than the eye; inter- 

 orbital space as broad as the upper eyelid; tympanum mode- 

 rately distinct, half the diameter of the eye. Fingers free; 

 toes half-webbed; disks of fingers as large as the tympanum; 

 subarticular tubercles moderate ; a small inner metatarsal 

 tubercle. The tibio-tarsal articulation reaches between the 

 eye and the tip of the snout. Upper parts smooth or with 

 small flat warts ; throat, belly, and lower surface of thighs 

 granulate. Grey-brown or reddish brown above, with dark 

 brown symmetrical markings, a cross-band between the eyes 

 being constant ; usually a )( or )-( shaped marking on the 

 anterior part of the body ; sides of body and of thighs with 

 white spots between a brown network ; limbs with dark 

 cross-bands ; lower parts white, spotted or speckled with 

 brown. 



From snout to vent 35 mi Him. 



Several specimens from the Larut Hills at 4000 to 4500 

 feet. 



Ixalus vermiculatus. 



Head large, broader than long ; snout rounded, as long as 

 the diameter of the orbit ; canthus rostralis distinct ; loreal 

 region concave ; nostril a little nearer the end of the snout 

 than the eye; interorbital space as broad as the upper eyelid; 

 tympanum distinct, two fifths the diameter of the eye. 

 Fingers with a rudiment of'web ; toes half-webbed; disks of 

 fingers as large as the tympanum ; subarticular tubercles 

 moderate ; a small inner metatarsal tubercle. The tibio-tarsal 

 articulation reaches between the eye and the tip of the snout. 

 Upper parts smooth ; throat, belly, and lower surface of 

 thighs granulate. Olive-green above, closely vermiculate 

 with black ; upper surface of thighs with a series of large 

 black blotches ; sides of thighs and anal region orange- 

 yellow ; white beneath. Male with a large gular vocal sac. 



From snout to vent 33 millim. 



Three specimens from the Larut Hills at 4000 feet. 



