578 MR. p. r. LAiDLAW ON THE [Dec. 3, 



especially Hypsirhina enhydris, which I found on Guuong Inas far 

 away from the river. 



23. Hypsirhina plumbea (Boie). 

 Biserat. 



24. Hypsirhina enhydris (Schneid.). 

 Biserat, Kekabu, Guuong Inas. 



25. Hypsirhina bocourtii Jan. 



Hypsirhina bocourtii, Boulenger, Cat. Snakes, iii. p. 10 ; S. S, 

 riower, P. Z. S. 1899, p. 676. 



At the hottest part of the year this snake, according to the 

 Malays, leaves the swamps and goes out to deep water. A speci- 

 men was taken at Biserat along with Acrochordus javanlcus. 



26. HoMALOPSis BUCCATA (Linn.). 



27. Cerberus rhynchops (Schneid.). 

 Malacca. 



Subfam. DiPSADOMORPHINiE. 



28. DiPSADOMORPHUS DENDBOPHILUS (Boie). 



Dipsadomorphus dendrophilus, Boulenger, Cat. Snakes, iii. p. 70 ; 

 S. S. Plower, P. Z. S. 1896, p. 889 ; id. P. Z. S. 1899, p. 680. 



This species is nocturnal and much feared by the Malays, who 

 at the same time do not consider it particularly poisonous. In 

 the stomach of one of our specimens another snake w as found, a 

 second had been feeding on large slugs. The Malays call this 

 species " Ular katam tebu" (" katam tebu " are the little pieces of 

 sugar-cane peeled and stuck on skewers for sale in the markets) ; 

 the name obviously refers to the yellow rings on the body. Mr. 

 Annandale tells me that the same name is given to Bungarus 

 fasciatiis and sometimes to the sea-snake. Common at Patalung, 

 Jalor, and Kuala Aring. It thumps the ground with its tail when 

 alarmed, making a loud knocking sound. 



29. Dipsadomorphus cynodon (Boie). 

 Kuala Aring. 



30. Dryophis pbasinus Boie. 

 Biserat, Kuala Aring, Ulu Selama. 



31. PSAMMODYNASTES PICTUS Ptrs. 



Bukit Besar. 



32. Cheysopelea ornata (Shaw). 



Chrysopelea ornata, Boulenger, Cat. Snakes, iii. p. 196 ; id. 



