72 
one on the inner margin. There are only a few spines and 
spinules along the surface. The fifth joint carries seven or 
eight good-sized spines interspersed with as many small ones 
in no very regular order. The hand has three or four sparse, 
irregular lines of small spines; and the thumb and fingers 
havearoughened surface, with numerous small tufts of short hairs. 
The second, third and fourth pairs of legs are very nearly 
alike, the fourth being slightly the longest, and measuring 
350mm., of these 14 inches the last four joints occupying 
respectively 44, 21, 4, 14 inches. On the third joint the longest 
spine measures only 5 mm. in contrast with the distal spine 
of the fifth jomt, which is 19mm. long. In regard to N. 
diomedeae, Benedict writes :—‘‘ The ambulatory feet have a 
few spines 12 mm. in length, on the carpal and propodal seg- 
ments; one of the largest spines of the ambulatory feet pro- 
jects from the ischium [third joint].”’ The spines on the lower 
distal margin of the first joint vary, he says, from 8 to 11 mm. 
in length. In the present specimen the most conspicuous. 
spines are the proximal and distal on the fifth joint, and two 
or three of those on the fourth joint, one distal, one median, 
one on the inner margin. But the last two are less important 
on the second and third limbs than on the fourth. The lower 
surfaces of these limbs are smooth to the eye, but rough to the 
touch. 
The small, infolded fifth legs are quite free from the sterna\ 
plastron, and so situated in regard to the pleon that the rudi- 
mentary first pair of pleopods in the female might pass for 
epipods of these limbs. The minute chela is surrounded by a 
bush of sete. 
The four pleopods found only on the left side of the second, 
third, fourth and fifth pleon segments have the peduncle 
distally much widened, both that and the one-jointed ramus 
being setose. 
The male differs very little from the female except in the 
ordinary sexual characters. The length of the carapace is 
132mm., somewhat less than that of the female, which in 
breadth it just equals. The rostral spines are rather shorter, 
even with allowance for the slightly imperfect tip of the central 
horn. There is a well-developed spine in the centre of the six 
that form a hexagon on the gastric region. This is wanting 
in the female, but in general the spines of the male are less 
powerful... In both sexes it may be noted that paired spines 
are not always quite symmetrical in size or position. The 
hand of the right cheliped is 86mm. long and 31mm. in 
greatest breadth. The fourth peraeopod measures 360 mm. 
The distal spine of the fourth joint is only 1m mm. in length. 
