102 



black pendants and altei-nating small dots; head with a 

 black s» and post-orbital streak ; or with a broad arrow 

 enclosing a large round spot; belly white mottled with 

 fawn. Grows to above 3 feet, tail nearly one-fifth. 



Burma, Straits, China. In Burma it appears to replace 

 D. gohool. 



D. TRiGONATA, Schneider. 



Scales 21. Ventrals 235-269, subc. 79-102. The preocular 

 reaches nearly or quite to the vertical. Yellowish or greyish 

 olive, with dark brown quincuncially sagittal cross-bars. 

 Head mottled, with occipital spots and post-orbital streak ; 

 beUy white, with lateral brown dots. 



Common in India. Grows to 4 feet. 



D. MULTIFASCIATA, Blyth. 



A variety of the preceding. 

 A solitary museum specimen. 



D. GOKOOL, Gray. The common brown tree-snake. Plate 

 XVI fig. 5. 



Scales 21, vertebrals enlarged. Ventrals 211-231, subc. 

 78-85. Preocular does not reach the crown. Yellowish or 

 greyish brown, with a series of irregular buff vertebral dots, 

 from the sides of each of which drops a black fasciolated Y 

 mark ; belly yellowish, with black lateral dots ; the head has 

 a large brown |>i mark, divided by a yellow >-i . Grows to 

 3 feet, tail one-sixth. 



Common in Southern India. 



Much confusion has existed between D. gohool and D. 

 trigonata. The former is distinguished by the lower pre- 

 ocular, peculiar and decided head-markings, fewer ventrals 

 and the fasciolated shading forming the posterior arms of 

 the Y dorsal marks. It is the more common of the two. 



