( 186 ) 



prseoculars. Two postoculars. Infraocular very narrow. Upper 

 labials high, the fifth or sixth below the infraocular. Colour 

 brownish olive, with narrow greyish black-edged cross-bars. A 

 brown triangular patch on the snout, a roundish spot on each 

 side of occiput, an oblique streak from the prseocular to the neck. 

 Belly and some of the outer rows of scales yellowish. Usually 

 a row of black spots along the sides of belly. 



Grows to 42 inches. (Tail 10.) 



The head shields of this species are subject to great irregu- 

 larity. A specimen taken by me in Pegu had 5 frontals. It 

 was 25 inches long. Colour a rich brown with 34 sharply 

 defined whitish bars across the back, and the head symmetri- 

 cally marked with black. 



Inhabits Pegu, Tenasserim, the Malayan Peninsula and Java, 



Family Acrochordid^. 



Habit moderate. Body covered with small wartlike not 

 imbricate scales. Tail prehensile. 



Chersydrus, Cuvier. 



. Tail vertically compressed. Scales tubercular in over 100 

 rows. One row of scales on either side of the median line of 

 the belly, spinous, forming a double serrated ventral keel. 



C granulatus, Schn. 



Acrochordus fasiatus, Shaw. 



Colour above dark grey, the colour descending in regular 

 stripes to the belly, where it fades. Belly yellow, ascending in 

 regular stripes to the back, the pale and dark stripes alternating 

 regularly, though occasionally forming annuli. 



Grows to 37 inches. (Tail 375.) 



Inhabits mouths of rivers and the coast of Pegu, Southern 

 India, the Malayan Peninsula, New Guinea, Philippines, &c. 

 This species is very numerous in the Bassein river below Gnapu- 

 tau and seems to connect HydropMs with the Homalopsidoe, 

 being wholly aquatic, as its flattened tail shows. The embryos 

 according to Cantor are over 10 inches long. 



