1922J Smith: Reptiles and Batrachians. 26o 



SNAKES. 

 Typhops nigroalbus, D. & B. 

 1 ad, from the Tembeling river. 

 26 scales round the body. 



Polyodontophis collaris (Gray). 



Bouleng., Cat. Sn. Brit. Mus., 1893, I., p. 184. 



1 3 from Padang, Gunong Tahan (No. 5980). 



Sc. 17 rows throughout, V. 161, C. 100. Temporals 

 1 + 2, 10 supralabials. Total length 473 mm., tail 72. 



Dark brown above; a black vertebral line and two 

 pale lateral ones; a black occipital bar, and another just 

 behind on the neck. All the markings are very indistinct. 

 White below with a series of lateral spots, confluent with 

 the colouring of the back. Upper lip with a white streak. 



Gunong Tahan is a considerable extension south- 

 wards of the known range of this species. The specimen 

 is considerably darker in colour than any of those I have 

 seen from further north in Siam, 



Natrix chrysargus (Schleg.). 



Tropidonotus chrysargiis F.M.P., p. 127. 



Seven examples from Kuala Teku and Kuala Tahan, 

 3 from Eraser's Hill. One juvenile (total length 240 mm.) 

 is light brown in colour with black reticulations. 



Macropisthodon rhodomelas (Boie). 

 Kuala Tahan 2 examples, Wray's camp 1 example. 

 No. Sex. Ventrals. Caudals. 



5896 9 143 42 

 5898 s 135 53 



5897 juv. 139 48 



