KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55. N:0 3- 



21 



Widely distributed över the whole of Siarn, and even as coramon in the north- 

 ern parts of the country as in the Siamese Malaya. All the specimens I caught 

 showed a very sluggish appearance, they never attempted to bite or even to get 

 away when disturbed. A very variable snake with regard to the colour. 



The specimen collected at Hne Sai on the 8 th of December shows a very re- 

 markable colouring. The ventrals on the anterior parts of the body are bright yellow 

 with two longitudinal lines of reddish brown. There are also some yellow triangulär 

 spöts along the lateral line of the anterior parts of the body and a few white spöts on 

 the lower labials and on the smaller pairs of the chin-shields. 



The Doi Par Sakeng-specimen is of a brick red colour on the anterior parts of 

 the body which colour is fading on the posterior parts. All the upper labials are 

 almost white, forming a line to a little behind the angle of the mouth. 



N:o 



Localitv 



Ventrals 



Sub- 



Total 



caudals | length 



Tail 



Pra> 

 ocular 



Post- ! Tempo- 

 ocular räls 



Scales 



Bangkok . . . 

 Bangkok . . . 

 Bangkok . . . 

 Bangkok . . . 

 Hue Sai .... 

 Hue Sai . . . 

 Doi Par Sakeng 



140 



164 



158 



107 



153 



163 



158 



51 

 51 

 63 

 63 

 61 

 6T 

 54 

 54 

 58 

 58 

 48 

 48 

 53 

 53 



295 

 241 

 270 

 250 

 343 

 385 

 388 



53 



0'J. 



44 

 74 



68 



72 



2 + 2 

 24-3 

 2 + 3 

 2+2 

 2 + 3 

 2 + 3 

 2 + 3 



17 

 17 

 17 

 17 

 17 

 17 

 17 



33. Dryophis prasinus Boie. 



Two specimens, Doi Par Sakeng, south of Muang Fång, North-western Siarn, June 1914. 

 One specimen, Doi Par Sakeng, July 1914. 



Fairly common in the north-western parts of the country. This is also a 

 species with very variable colours. One of rty specimens is quite silvery gray with 

 a faint bluish shade, the other is påle brownish olive and the third is bluish green. 



In one of the specimens the internasals are separated by one of the three 

 small loreals from the upper labials. The fronta] is in all these three specimens shorter 

 than its distance from the end of the snout, and just as long as the parietals. 



In one of the specimens there are 3 postoculars. 



