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



19 



27. Homalopsis buccata Linn. 



Two specimens, Bangkok (V. Wirgeen coll.). 

 One specimen, Bangkok, 1914 (M. Smith coll.). 

 Two specimens (imm.), Bangkok (V. Wirgeen coll.). 



This snake which is distributed in CochinChina, Burma, the Malay Peninsula and 

 Archipelago is also very common in Siarn, and in Bangkok it is the most common of 

 all fresh-water snakes. 



N:o 



Locality 



Ventrals 



Sub- 

 caudals 



Frontal i Loreal 



Prae- 

 oculars 



Post- Sub- 

 oculars oculars 



Upper 

 labials 



Total 

 lengtb 



Length 

 of tail 



Scales 



Bangkok 

 Bangkok 

 Bangkok 

 Bangkok 

 Bangkok 



174 



170 

 171 

 174 

 176 



99 

 93 

 87 

 97 

 95 



divided 

 divided 

 divided 

 en t i re 

 divided 



entire 

 entire 

 entire 

 entire 

 entire 



2 



3 



11 



800 



210 



2 



2-1-3 



!l 



962 



232 



2 



2 



12 



985 



220 



2 



2 



13 



400 



100 



2 + 3 



1 +2 



11 



310 



78 



45 

 45 

 47 

 47 

 45 



28. Cerberus rhynchops Schneid. 



Two specimens, Bång Tapan, Siamese Malaya, 1914 (M. Smith). 



This snake has very seldom been recorded from Siarn and always from the 

 Siamese Malaya. However, down at the inland-sea near Singora in the southern 

 parts of the Siamese Malaya it is quite common. The rows of scales seems to be fairly 

 variable. In one of my specimens I have counted 22, 23, 24 and 25 rows on different 

 parts of the body. In every other way it perfectly well agrees with the description 

 given in the litterature. 



Total length of my specimens = 947 mm. & 702 mm. resp. 



Length of tail = 152 mm. & 105 (tip broken). 



29. Herpeton tentaculatum Lacép. 



Seventeen specimens, Petriu (V. Wirgeen coll.). 

 Siamese name: ngu kradang. 



This curious snake which only inhabits Siarn and Indo China is very rare in 

 collections. 



According to the statement of Mr. V. Wirgeen, who has collected many spe- 

 cimens, it was quite common near Petriu, though seldom observed when not especi- 

 ally looking for it. It lives entirely in water and is very sluggish and inoffensive. 

 When handled it keeps quite stiff (hence the name in Siamese which means stiff). 



As stated by Doctor Smith the rostral appendages are covered by härd scales, 

 not at all soft ones as remarked by Flower (P. Z. S. 1899 p. 680), and they do not 



