32 Rev. T. R. R. Stebbing on Sesstle-eyed Crustaceans. 
tipped with two or three short, hooked, compound sete. - The 
cilia of the fringes just mentioned appear to be finely plumose. 
The first gnathopods are inserted just below the eyes; so that 
the dorsal groove-line, which marks the termination of the 
head, is well to the rear of them. Of these limbs the basos 
is narrow, scarcely so long as the hand; the two following 
joints are short and insignificant ; the wrist is also short, but 
broad and cup-shaped. The hand is well developed, longer 
than broad, swollen out, except at its junction with the finger ; 
here and along both edges it has a good crop of bristles. Its 
ventral surface also shows some very short stiff-looking down, 
and near the base two stout divergent spines, between which 
the finger closes down. The finger itself is broad, as long as 
the hand; its outer edge curved, its inner edge nearly straight, 
serrated with blunt serrations. The whole gnathopod is very 
small. Not so the second pair, although in these the thigh is 
scarcely longer than the breadth of the second segment. ‘The 
wrist also is a small rectangular piece, almost square ; but the 
hand is of great size, nearly as long as the segment to which 
the limb is attached. The narrowest part of this elongate 
hand is at the base; the anterior margin is nearly straight. 
The hinder margin is broken a little beyond the middle by a 
triangular process surmounted by a small spine; beyond this 
process the margin runs on with some slight sinuosity to its 
angular termination, where it turns to meet the finger-joint. 
The massive finger is set on at right angles to the anterior 
margin; and when it is closed the great swelling curve 
of its outer edge is brought round into the recess formed 
by the process above mentioned; while, under the same 
circumstances, the convex portion of its inner curve is over- 
lapped by the distal angle of the hand. The portion of the 
hand between the distal angle and the triangular process is 
furred with long hairs. The branchial vesicles are narrowly 
ovate. The fifth, sixth, and seventh pairs of legs scarcely 
differ in any respect except size, the sixth being larger than 
the fifth, and the seventh than the sixth. In the seventh the 
thigh is nearly as long as the segment to which it is attached; 
the following joint is quite small; the triangular metacarpus 
is about the same size as the thigh, and carries a small group 
of setee on the distal exterior angle; the wrist is shorter, 
somewhat squared in shape, but broadest distally; it has 
pairs. of short sete or spines along the inner edge: the hand 
is twice the length of the wrist; it has a concave palm com- 
mencing at a third of its length from the wrist, with two 
broad, blunt, serrated spines: at its origin, and four poe of 
spines along its edge, which, when highly magnified, seem 
