TRIMERESURUS MONTICOLA. 



" The second upper labial forms the front of the pit. There are two 

 small shields behind the nostril, sometimes a small azygos shield below 

 this. The scales on the head are smooth, those on the body slightly 

 carinated. There are twenty-three series. Ventrals 137-141 ; sub- 

 caudals 41. The supra- ciliaries are very large. The coloration varies. 

 In one specimen it is pale brown, with a vertebral row of large, square, 

 dark brown blotches. Along the sides a row of small dark spots ; a pale 

 temple-streak. Belly dark mottled. The larger male specimen, which 

 is also from Darjeeling, is of a dark brown or almost blackish-ash colour, 

 with the rhomboid patches along the vertebra?. There is a peculiar mark 

 in the middle of the neck like a U, which is of a yellowish or whitish 

 colour." (Fayrer.) It is found in the sub-Himalaya, the Darjeeling, 

 Sikkim, Nepaul, and Khasya Hills ; and in the Neilgherries and 

 Anamally Mountains in Southern India. 



Trimeresurus Andersonii. 



" Mr. Theobald has named what he considers a new species after 

 Dr. Anderson, the Curator of the Indian Museum. It is described in 

 his ' Catalogue of the Asiatic Society's (now Indian) Museum,' pp. 75 

 to 76. It has 25 rows of carinated scales, 182 ventrals, and 56 sub- 

 caudals in one specimen, and 71 in the other. The second upper labial 

 forms the anterior margin of the prse-orbital pit ; supra-nasals separated 

 by an azygos shield. The colour above and below is a uniform rich 

 brown. Belly and sides marked conspicuously with white spots. 

 Found in Assam. A second individual, named by Mr. Theobald in the 

 same Catalogue as 7! obscurus, has the back of a uniform brown, sides 



