10;i Aiir.AiiEs. 285 



eight (or seven) upper labials, third, fourth, aiul fifth (or third and 

 fourth) entering the eye ; four lower labials in contact with the 

 anterior chin-shields, which are slightly longer than the posterior. 

 Heales in 13 rows. Yentrals 114-122: anal divided; subeaudals 

 77-103. Lustrous dark brown or black above, with three yellowish 

 longitudinal lines lost on the hinder half of the body ; the vertebral 

 line beginning behind the nape, the laterals widening anteriorly and 

 descending obliquely with their bbick borders towards the throat ; 

 a yellow chevron-shaped collar, pointing backwards ; the black of 

 the upper surface of the head descending as a triangular patch on 

 the temple ; eye bordered with black ; upper labials yellowish, with 

 a few small black spots : lower parts uniform yellowish white. 



Total length 430 millim. ; tail 170, 



Borneo, Sumatra, Pinang. 



a-b. (S (V. 118, 116; llejang River, Sarawak. BrookeLow,Esq.rP.1. 

 0.84.77). 



c. S (V. 117; C. 93). Rejang River. Rajah Brooke \V.\ 



d. 6 (V. 122 ; C. ?). Mt. Batu-Song, Sara- C. Hose, Esq. [0.1. 



wak, 2G0Oft. 



The following snake is perhaps to be regarded as a variety of 

 A. longlcauda ; the description is, unfortunately, insufficient, and 

 the figure represents the animal with a vertical pujjil : — 



DiADOPHis BiPUNCTATus, V. Lidtli de Jeude, in M. Weber, Zool. 

 Ergebn. p. 184, pi. xvi. fig. 9 (1890). 



One prse- and two postoculars ; temporals l-|-2; seven ujjper 

 labials, third and fourth entering the eye. Scales in 13 rows. 

 Ventrals 117 ; subcaudals 90. Upper parts dark bi-own, lower 

 parts yellow, without stripes or spots ; head and neck black ; two 

 small white spots on the parietal shields ; three yellow cross bands 

 on each side of the neck, the first pair meeting in the middle and 

 forming a collar, the third not clearly marked ; a yellow spot behind 

 and under the orbit ; the three anterior ujjper labials partly yellow, 

 partly black ; a triangular black spot at each end of the ventral and 

 caudal shields, close to the outer row of scales, the spots forming 

 a continuous black line along each side of the belly. 



Kaju Tanam, Sumatra. 



1 2. Ablates nicobariensis. 



Ablabes nicobariensis, Sfoliczka, Journ. As. Soc. Beng. xxxix. 1870, 

 p. 184, pi. xi. fig. 1 ; Bouleng. Faun, hid., Re2)t. p. 307 (1890). 



Rostral low, wide, not reaching the top of the head ; nostril 

 between two nasals ; internasals about half the size of the prae- 

 frontals ; frontal somewhat larger than the supraoculars ; parietals 

 about one fourth larger than the frontal, in contact with both post- 

 oculars ; loreal united with the postnasal ; one pra3- and two post- 

 oculars ; temporals 1 -|- 2 ; upper labials seven, third and fourth 



