1870.] Indian and Malayan Amphibia and Reptilia. 217 



76. Trimeresurus erythrurus, G a n t o r, (Q- ii n t h e r, 1. cit. 

 p. 386). 



The head in this species is elongately oval, more depressed than 

 in either T. gramineus and T. carinatus ; the nsnal number of rows 

 of scales is 23 in adult specimens, 21 in young ones ; the scales are 

 elongated, pointed and strongly carinated. There are mostly 11-12 

 upper labials, and usually only one row of scales between the la- 

 bials and the infraoculars. The supranasals form a broad suture 

 behind the rostral, but sometimes a small azygous shield is present. 

 All the specimens, I have seen, had the lips and chin white, the 

 lateral line was also always distinctly white, bordered with greenish 

 or purple below ; general color uniform green above, tail ruddy. 



I found this species common on the limestone hills near Moul- 

 mein ; and also obtained specimens from Upper Burma, from Penang 

 and the "Wellesley province ; it is always more slender than T. cari- 

 natus. One specimen from Moulmein measures 25 inches of which 

 the tail is 5, 23 rows of scales, ventrals 157, subcaudals 63 ; another 

 young specimen is 10^, of which the tail is 2£, scales in 21 rows 

 only, ventrals 167, subcaudals 63, the second, fifth and sixth are 

 entire, the other bifid. 



A specimen from Java measures 21£ inches, it has 170 ventrals 

 and 75 subcaudals, the colour of this and of other Penang and 

 Javanese specimens always appears to be darker green with a 

 bluish tinge, while Moulmein specimens are bright green, but there 

 is no difference in structure between both. 



77. Trimeresurus carinatus, G- r a y, (Or u n t h... 1. cit. p. 386). 



This species has 23-25 rows of scales, exceptionally only 22 or 21. 

 The scales are elongated, larger than in either of the two last 

 named species, sharply carinated ; the head is short and high, there 

 being mostly two rows of shields between the infraoculars and the 

 labials, the latter are generally ten in number ; there are usually 

 one or two azygous shields present, very rarely there is no azygous 

 shield, but in such a case the supranasals just touch each other, 

 not forming a broad suture, as in erythrurus ; the supraciliaries 

 are very large. The general color is usually green, sometimes 

 there are large blackish spots at the sides ; the lateral line is either 



