206 Dr. C. Chilton on 
what in length posteriorly, but not greatly so, the fourth and 
fifth being almost subequal and not very much longer than 
the third. The basal joint in all is oblong, not much ex- — 
panded, and is narrowed a little distally ; its posterior border 
is obscurely serrate ; all the succeeding joints are stout; the 
merus 1s only slightly produced at the postero-distal angle ; 
the propod is much longer than the carpus ; the finger is 
short and stout, with a small secondary nail. The arrange- 
ment of the sete on the joint can be readily seen from 
fis. AT: 
The first uropod (figs. 18, 19) has the peduncle oblong, 
rather shorter than the rami; it bears a small spinule at the 
distal end of the upper margin, and from the lower part of 
its extremity a long curved acute spine, fully half as long as 
the inner ramus, projects between the two rami, recalling a 
similar spine found in some species of Lurystheus, Corophium, 
etc. ; the outer ramus is slightly shorter than the inner, both 
bear two or three short spinules on the upper margin and 
longer ones at the extremity. 
The second uropod (fig. 20) has the peduncle subequal to 
the inner ramus, the outer ramus being rather shorter ; there 
is no eurved spine at the extremity of the peduncle, but 
pee the uropod shows similar structure to that of the 
rst. 
The third uropod, in the male (figs. 21, 22), has the 
peduncle stout and nearly twice as long as either of the rami: 
these are short and broad, being less than twice as long as 
broad ; the outer one bears at the extremity a peculiar stout 
seta with fine serrations towards the end (see fig. 22)—in 
addition to this there are five or six short sete which are 
slightly curved at the end and some of which are finely 
serrate ; the inner ramus bears at the extremity three or 
four setee of the usual kind slightly longer than those on the 
outer ramus and one or two smaller ones placed more proxi- 
mally. In the female (fig. 23) both rami are more slender 
and slightly longer, being about as long as the peduncle ; 
they bear only simple sete. 
The telson (fig. 24) is slightly convex above, so that it 
appears fairly thick in side-view : it is broadest at the base, 
where the breadth is about two-thirds the length, and narrows 
slightly distally ; the posterior border is convex and bears 
two small spines at each corner, and two or three smaller 
spines are present on each lateral margin. There is no sign 
on the telson of hooked spines. 
