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



27 



43. Ancistrodon rhodostoma Boie. 



One specimen, bctween Doi Vieng Par & Doi Par Sakeng south of Muang Fång, North-western Siarn, 

 8 / 7 1914. 



Two specimens, Koh Lak, Siamese Malaya, 3 /vi 1914. 

 One specimen, Koh Lak, Siamese Malaya, Dec. 1914. 

 One specimen, Bång Tapan, Siamese Malaya (M. Smith coll.i. 

 One hatchling, hatclied in captivity, Bangkok 1914. 



Seems to be fairly common all över the country. This species is not very 

 much dreaded by the natives on account of its slugginess. 



The large specimen caught on the road between Doi Vieng Par and Doi Par 

 Sakeng is of a brick-red colour ; all the other are grayish with dark brown markings. 



One of the specimens obtained had swollovved a small bird, probably a young 

 of a shama and it is rather astonishing that such a sluggish snake had been able 

 to catch a bird. 



N.o 



Locality 



Sub 



Ventrals , , iTotal leneth Tail 



caudals ° 



Post- Upper 

 oculars labials 



Doi Vieng Par 

 Koh Lak . . 

 Koh Lak . . 

 Koh Lak . . 

 Bång Tapan . 



166 



104 

 161 

 158 

 ICO 



38 

 38 

 38 

 38 



38 

 38 

 36 

 36 



ioO mm. 

 410 



397 » 

 454 » 

 355 » 



85 mm. 



38 



44. Lachesis gramineus Shaw. 



Three specimens, Bangkok, 1914. 



One specimen, Koon Tan, Northern Siarn (1250 m.), Sept. 1914. 



One specimen, Meli Nja Min. west from Muang Fång. North-western Siarn, 



1914. 



One of the Bangkok specimens, which is rather large measiirihg 589 mm. in 

 total length has 8 rows of scales between the supraoculars; on one side there are 2 

 and on the other 3 postoculars; between the subocular and the labials there is only 

 1 row of scales; 10 upper labials on one side and 9 on the other. Of the upper 

 labials the second is the largest on one side and the third on the other. Scales in 

 21 rows all distinctly keeled, even the temporals. 



The specimen, collected at Meh Nja Min, is remarkable by having a bright 

 brick-red lateral line boarded by a white line (both these lines are running up to 

 below the eye) below the grass-green colour of the upper parts of the body; 12 rows 

 of scales between the supraoculars. There is only 1 row of scales between the upper 

 labials and the subocular, which is very narrow. 



