328 Mr. R I. Pocock on new Genera 
than the diameter of the small eye. The median keel on the 
tergites rather weak, but the four granular keels on the last 
tergite strong. 
Sternites smooth, impressed with large punctures; the last 
with four granular keels. 
Tail constructed as in the preceding species, but rather 
stronger, being more than three times the length of the cara- 
pace, which is shorter than the first three segments by about 
one third of the third segment, and the second segment is 
wider than long, and the third as wide as long. 
Palpi almost as in the preceding species, but with the keels 
weaker and not so strongly granular, while the intercarinal 
spaces also are less strongly granular; there are thirteen 
pores on the lower surface of the brachium ; the length of the 
hand-back considerably exceeds that of the carapace and of 
the movable digit, these two being equal—it equals, in fact, 
the first three caudal segments; the digits are rather short, 
distinctly lobate and sinuate in their proximal half, the height 
of the immovable at the base being about one third of its 
length. 
Legs externally granular. 
Pectines large, with distinct fulera and 9 teeth. 
Total length 55 millim., of carapace 8, of tail 27 ; width of 
brachium 3, of hand 5; length of hand-back 9, of movable 
digit 7. 
A single adult male from Central Tenasserim, collected by 
— Binghan, Esq. 
This species, with its slender hands, strongly crested 
superior caudal keels, &c., belongs to the same category as 
S. montanus, Karsch, anthracinus, Simon, Lindstroemii and 
lugubris, Thorell, and longimanus, sp. n. It differs from 
montanus at least in having the carapace shorter than the 
anterior three caudal segments and in having the carapace 
considerably shorter than the hand-back. From anthracinus 
it may be recognized by having thirteen instead of nineteen 
pores on the brachium, from Lindstroemii and lugubris by 
having thirteen instead of fifteen pores, and from longimanus 
by having thirteen instead of ten pores, &c. 
ANUROCTONUS, gen. nov. (Pl. XIV. figs. 14 and 15.) 
Allied to Uroctonus, Thorell, but differing at least in having 
a single tooth instead of a series of teeth on the lower edge 
of the movable digit of the chelicere. 
Type Anuroctonus pheodactylus (Wood). 
Of this species I have seen a single specimen (female, with 
