178 PROCEEDINGS OF THE ACADEMY OF [April, 



Mabuia rudis Boul. 



]S"o. 2,241, from Kucliiug. 

 Lygosoma vittatum 'Edel.)- 



Three, Sarawak; two, Kucliing; one, Borneo. 

 Lygosoma nitens Peters. 



One, Borneo. 

 Tropidophorus brookii (Gray). 



Nos. 5,697, 5,853, Borneo. 



These specimens are each about 220 mm. long. In each of 

 them the prefrontals are widely separated, as in the type speci- 

 men. 



Ophidia. 



Python reticulatus (Schn.). 



Two, Borneo ; two, Baram, 

 Cylindropliis rufus (Laur.). 



Two, Kuching ; two, Borneo ; one, Celebes, collected by Charles 

 Hose. 



Largest specimen 380 mm. 

 Xenopeltis unicolor Reinw. 



One, Kapuas river. 



Veutrals 179; subcaudals 29. 

 Polydontophis geminatus (Boie). 



No. 2,338, from Baram. 



Length 485 mm. (tail 120) ; veutrals 150; subcaudals 51. 



This specimen corresponds exactly to Gunther's description of 

 Ahlahes flaviceps, but is characterized by an extremely short tail, with 

 a reduced number of subcaudals ; the lowest given by Mr. Bou- 

 lenger being 89, 

 Tropidonotus trianguligerus Boie. 



Xos. 5,G!)2, 5,702, Borneo. 



No. 5, 702 I refer to this species, with which it agrees iu scu- 

 tellation, although there is a considerable difference in the color 

 pattern, which is very obscure, but seems to consist of a row of 

 black vertebral spots and an indistinct series of smaller ones on 

 each side, much closer together than iu typical trianguligerus. 

 Each ventral heavily edged with black at the ends. 



Length 720 mm. (tail 246); veutrals 140; subcaudals 105. 



