108 Mr. G. A. Boulenger on new 



lately elon.^iate, the tips dilated into very small discs ; sub- 

 articular tubercles very prominent; first fins^er much shorter 

 than second; three very prominent carpal tubercles; toes 

 one-third webbed ; two small but very prominent metatarsal 

 tubercles, not larger than the subarticular tubercles, inner 

 oval, outer round. Tibio-tarsal articulation reaching the 

 eye ; tibia four times as long as broad, a little more than 

 half the lengtli of head and body. Back with scattered small 

 warts. Pale brown above, with a large dark brown marking, 

 finely edged with white, from between the eyes to the vent, 

 with three curved sinuses on each side, narrowest on the 

 occiput, broadest on the sacral region ; no dark lateral band ; 

 lower parts whitish^ throat of male biowii, darker on the 

 chin. 



From snout to vent 23 mm. 



Two specimens, male and female, from Saigon, Cocliin 

 China, taken by M. Holbe in 1887, formed part of the 

 Lataste Collection. Examples of M. inornata, Blgr., and 

 M. achat'ina, Boie, were collected by M. Holbe in the same 

 locality. 



The more extensive web between the toes, the more slender 

 liind limb, and the absence of a dark lateral band readily 

 distinguish this frog from M. achatina. 



X. — Descriptions of Four neiv Snalces in the Collection of 

 the British Museum. By G. A. Boulenger, F.R.S. 



(Published by permission of the Trustees of the British Museum.) 



Cylindrophis aruensis. 



Diameter of eye not quite one-third its distance from the 

 nostril. Snout as long as the distance between the eyes. 

 Rostral as deep as broad ; nasals in contact behind the rostral ; 

 frontal as long as broad, as long as the prefrontals, little 

 larger than the supraocular, larger than the parietal ; six 

 upper labials, third and fourth entering the eye. Scales in 

 21 rows ; no enlarged ventrals ; subcaudals 6. Reddish 

 brown, with white transverse spots forming two alternating- 

 series on the back and cross-bars on the belly, some of whicli 

 are complete, otiiers interrupted and the two halves alter- 

 nating ; a pair of large white blotches on the nape ; lower 

 surface of tail white. 



Total lenofth 170 mm. 



