KUNQL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55. N:0 3. 



N:o 



Localitv 



Ventrala 



Sub- 



caudals 



,Total length 



Length of' 

 tail 



Scales 



Bangkok 

 Bangkok 

 Bangkok 

 Bangkok 

 Bangkok 

 Siarn . . 

 Bangkok 

 Bangkok 

 Bangkok 



197 

 191 

 194 

 190 

 193 

 200 

 188 

 188 

 186 



525 mm. 



690 > 



770 » 



615 » 



070 » 



645 » 



780 » 



580 » 



315 » 



12 mm. 

 15 » 

 14 



IG » 

 15 

 16 

 16 



21 rows 



21 



21 



21 



21 



19 



21 



5. Xenopeltis unicolor Reinw. 



One specimen, Bangkok, March 1915. 



One specimen, Koh Lak, Siamese Malaya, Jan. 1915. 



One specimen. neighbourhood of Bangkok (M. Smith coll.). 



Two specimens, Bangkok, 1914. 



One specimen, Xon Luum, Eastern Siarn, Jan. 1912. 



Siamese name: ngu sang aihit. 



>On the specimen from Non Luum there is a small extra plate wedged in 

 between the supraocular and the superior postocular ; the caudal shields are fewer 

 than stated in Boulenger's Catalogue of the Snakes in the Br. Museum (23 instead 

 of 26).» L. G. Andersson. 



N:o 



Locality 



Ventra,s caudais Tot. length Tail 



1 



2 



3 



4 

 5 

 6 



Bangkok 



Bangkok 



Bangkok 



Koh Lak 



191 

 187 

 190 

 190 

 187 

 186 



27+ l 

 27 ^ 



£+- 



27^ 



23 



23 



580 

 855 

 1015 

 795 

 670 

 795 



58 

 93 

 86 

 60 

 67 

 60 



This beautiful snake seems to be fairly common över the whole of Siarn, though 

 rarer in the North than in the South. 



The name in Siamese means the »sunbeam snake» which is very vvell deserved. 



