OF CRUSTACEA FROM SINGAPORE. 
115 
towards the tip and mucronate (Plate VI. fig. 8). The hand 
is somewhat compressed, naked, carinate beneath, and finely 
granulate ; the fingers are curved inwards and channelled. 
Wrist almost orbicular, and, as well as the arm, covered with a 
fine pubescence and fringed at the edge. The arm has a fringe 
or “ wing ” of club-shaped hairs on the upper, and two on the 
lower, side (Plate VI. fig. 8*). The ambulatory legs have four 
similar wings on all the joints, which are pubescent, except the 
extremities of the tarsi, which are deeply channelled. Length 
of carapace to end of rostrum, 1-j-^ in. ( = 4'2 centim.). Greatest 
width, If in. (=3‘5 centim.). 
Xantiio scaberrimus, n. sp. (Plate VII. figs. 1-4.) 
Carapax omnino verrucosus. Chelipedes verrucis magnis, 
pedes cseteri spinis instructi. (Coll. Brit. Mus.) 
Carapace broader than long, moderately convex ; regions and 
subregions strongly defined and covered with large granules, 
rounded in the central part and becoming more pointed towards 
the sides. Promt 2-lobed. Antero-lateral margin with three 
prominent teeth, the hindmost being at the beginning of the 
branchial region, and the foremost (the smallest of the three) 
about halfway between that and the orbital margin ; the central 
tooth about equidistant from the other two. Postero-lateral 
margin straight, not concave. Underside also densely granulate. 
The chelipedes covered with large granules, those on the hand 
being largest, especially on the outer side, on the lower half of 
which they are arranged in parallel rows, two of which terminate 
in carina! on the fixed finger. The movable finger has a cariua 
on the upper surface, with six granules gradually diminishing 
from a large one at the base, and two carinse on the outer side. 
The walking-legs have a row of spines on the upper edge of the 
tarsal and carpal joints, with one or two more or less parallel 
rows below, and the lower edge slightly serrate at the distal 
extremity. The third and fourth pairs have a deep notch at the 
distal end of the inerus. The fifth pair has a row of large irre- 
gular spines along the upper edge of the merus, with two ill- 
defined rows on the outer side and a row of smaller spines on 
the lower edge. Colour ashy, shading into dull yellow on the 
fingers. Length If in. ( = 475 centim.). Breadth 2y% in. 
( = 6'2 centim.). 
LINN. JOURN. — ZOOLOGY, YOL. XX. 
10 
