from the Southern Shan States. 199 
both from the Burmese and Siamese sides, and reveals the 
existence of seven previously undescribed species, all of which 
are represented by excellently preserved specimens. I ma 
here add that the collection of Reptiles formed by Mr. Oates 
in the same district, although poor in number of specimens, 
yielded the type of anew genus and species of Snakes, which 
has been lately described in the first volume of the new Cata- 
logue of Snakes as U'rirhinopholis nuchalis, and an example 
of a Lizard previously unrepresented in the Museum, Acantho- 
saura kakhienensis, Anderson. 
Ophiocephalide. 
1. Ophiocephalus gachua, Ham. Buch. 
Nampandet, 2000 feet ; Fort Stedman, 3000 feet. 
2. Ophiocephalus siamensis, Gthr. 
Fort Stedman. 
Mastacembelide. 
3. Mastacembelus Oatesii, sp. n. 
Depth of body 9$ to 10} times in total length, length of 
head 63 to 7 times. Snout thrice as long as diameter of eye, 
ending in a trifid appendage; cleft of mouth extending 
hardly to below nostril; four or five strong spines at angle 
of preoperculum, increasing in size from the lower to the 
upper. Vertical fins distinct, united only at the base with 
the caudal. Dorsal XAIX-XXANAIII* 48-55 ; originating 
-above middle of pectoral. Anal II] 46-55. Pectoral about 
4 length of head. 18-20 scales between origin of soft dorsal 
and lateral line. Pale yellowish brown, uniform or marbled 
with brown or with irregular dark brown blotches; dorsal 
line and top of head dark brown; pectoral usually brown 
with broad yellowish border. 
Total length 290 millim. 
Kort Stedman, 3000 feet. Hight specimens. 
A, Mastacembelus caudiocellatus, sp. n. 
Depth of body 8% to 10 times in total length, length of 
head 5 to 5} times. Snout thrice as long as diameter of eye, 
ending in a trifid appendage; cleft of mouth extending 
hardly to below nostril; no spines on preeoperculum. Ver- 
tical fins distinct, united only at the base with the caudal. 
* 29 spines in one specimen, 33 in two, 32 in the five others. 
