KTJNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55. N:0 3. 9 



One specimen, Klong Doi, Bangkok, January 1915. 



One specimen, Koon Tan, Northern Siam, May 1915 (1350 m.). 



One specimen, Klong Doi, Bangkok, 7 /-' 1915. 



One specimen, Bangkok, December 1911. 



Siamese name: ngu lai saw (M. Smith). 



Very common över the whole of Siam and probably the snake most often met 

 with on suitable localities. It chiefly lives in the padi-fields but it is also found 

 rather high up among the mountains. 



Specimen N:o 1: Internasals shorter than the prsef rontals ; loreal longer than 

 deep; 4 th and 5 th upper labials entering the eye; two outer rows of scales smooth. 

 Var. B. in the Catalogue Brit. Mus. 



Specimen N:o 2: Internasals shorter than the prsefrontals ; loreal as long as 

 deep; 4 th and 5 th upper labials entering the eye; two outer rows of scales smooth. 

 Var. B. 



Specimen N:o 3: Internasals shorter than prsefrontals ; loreal as long as deep; 

 4 th and 5 th labials entering the eye ; two outer rows of scales smooth. Var. B. 



Specimen N:o 4: Internasals as long as prsef rontals ; loreal a little longer than 

 deep; 4 th upper labial entering the eye on one side, 4 th & 5 th on the other; two rows 

 of scales smooth. Var. B. 



Specimen N:o 5: Internasals shorter than prsefrontals; loreal as long as deep; 

 4 th and 5 th labials entering the eye; two rows of scales smooth. Var. B, but there 

 are very small and few black spöts on the body. 



Specimen N:o 6: Internasals as long as prsefrontals; loreal longer than deep; 

 4 th & 5 th labial entering the eye; two rows of scales smooth. Var. B. with ver}^ big 

 black spöts. ? with 41 eggs. 



Specimen N:o 7: »There are only two rows of black spöts, one on each side; 

 the back is uniform, except the light and dark narrow margins of several scales. 

 Ventrals and subcaudals bordered with black.» L. G. Andersson. 



Specimen N:o 8: Internasals shorter than prsefrontals; loreal as long as deep; 

 4 th labial entering the eye on one side and 4 th & 5 th on the other; two rows of 

 scales smooth, last two ventrals divided. Same colour as N:o 7. 



Specimen N:o 9: Internasals as long as prsefrontals; loreal as deep as long; 

 4 th labial entering the eye on one side and 4 th and 5 th on the other; two rows of 

 scales smooth. Uniform light brown above, except some black margins of some of 

 the scales. A black V-shaped mark on the nape. Var. B. 



K. Sv. Vet. Akad. Handl. Band 55. N:o 3 2 



