20 NILS GYLDEXSTOLPE, THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 1. SNAKES. 



seem to be sensitive, at least the snake does not react when beeing touched on the 

 appendages. 



The number of scales on the body seems to vary rather much as is also stated 

 by Smith (Journ. Nat. Hist. Soc. of Siarn N:o 2. Vol. I p. 127). 



The colour is also rather variable and the younger specimens are orange brown 

 above (paler below, where there are two lines of white and brown spöts). 



Some specimens are of a slaty black colour with spöts and bars of orange white 

 on the under parts of the body. 



30. Dipsadomorphus multimaculutus Boie. 



One specimen, Sriracha, Kast coast of the Gulf of Siarn, 1914 (M. Smith roll.). 

 One specimen, Kon Lak, Siamese Malaya, S7 /n 1914. 

 One specimen, Ban Sakerat, Eastern Siarn, January 1912. 



This very handsome snake seems to have a fairly wide distribution in Siarn. 



The frontal is as a rule as long as broad and only in one of my specimens 

 (that one from Koh Lak) it is a little longer. On the Sakerat specimen which has 

 a total length of 782 mm. the frontal is shorter than its distance from the end of 

 the snout and also much shorter than the parietals. 



It is much dreaded by the Siamese who believe it very poisonous in contrary 

 to the Malays (vide Laidlaw). 



31. Dipsadomorphus cynodon Boie. 



One specimen (M. Smitm coll.). 

 Not very common in Siam. 



My specimen which belongs to Var. A. in the Catalogue Brit. Mus. has the 

 frontal longer than its distance to the end of the snout; temporals 2 + 3; 3 rd . 4 th & 

 5 th upper labials are entering the eye; scales in 23 rows. 



Total length = 1230 mm. 



Length of tail = 250 » 



Ventrals = 267. 



Subcaudals = — . 

 122 



:{l\ Psammodynastes pulverulentus Hon:. 



One specimen, Bue Sai, Siamese Blalaya, oear the Tenasserira boarder, "/»* 1914. 



One Bpecimen, Hue Sal, Siamese Malaya, 8 /m 1914. 



One Bpecimen, Doi Par Sakeng, near Bfaang Fång. North-western Siarn, Joly 1914. 



Two specimens, Bangkok, L914. 



One Bpecimen, Bangkok, 1914 M. Smith coll.). 



One specimen, Bangkok, 1912. 



