52 T. V. HODGSON. 
curve in one direction, and the three following curve in another. Measured in their 
extreme length the proportions of the various joints of the appendage are: 3:6:6:8: 
7°75:7:4:4:2°5:4. The third and following joints are all more or less covered with 
very short stout setee on the outer side of their curvature ; these setae are most con- 
spicuous on the fourth, fifth, and sixth joints, on the last of which they are also lateral. 
The last four joints each bear a small number of stout but simple spines, 4: 8 : 7 : 6, not 
arranged in a single row. The last jomt tapers to a blunt point, and is without a 
terminal claw, a small group of these spines taking its place. 
The Legs attain a length of about 55 mm. Of the three coxee the second is twice 
the length of the other two, the proportions of the remaining joints beg 13°5 : 12: 
16:4, the last figure representing the tarsus and propodus together. The coxze are 
densely clothed with very minute setz, but on the femur they are much larger, 
though still small, and more conspicuous. They are arranged as a dorsal and a ventral 
band, separated laterally by a considerable interval, along the centre of which is a 
narrow band of similar sete. This arrangement is continued along the tibiz but it 
is not so distinct on the second. The distal fringes are quite normal and incon- 
spicuous. The tarsus is a very small cup-lke joint, covered with spinous setz 
ventrally, with a few prominent ones distally. The propodus is uniformly covered 
with small spinous sete, but ventrally there is a row of stout spines running 
the whole length of the joint. These spines are very irregular; beginning from the 
proximal end the first three or four rapidly increase to large dimensions, the rest are 
very irregular in size, but none are so large as the last of the proximal series. The 
joint terminates obliquely, the dorsal projection is not large; the terminal claw is 
stout, and its two auxiliaries are quite half as long, arising together from a process of 
the oblique termination. 
The single specimen of this species is immature, and was taken in Winter Quarters 
at a depth of 125 fathoms. 
AUSTRODECUS. 
Body stout, and distinctly segmented, with lateral processes close together. Ocular tubercle 
anteriorly situated, long, with four well-developed eyes. 
Proboscis immovably articulated to the trunk and ventral in position ; long, tapering, slender. 
Chelifori absent. 
Palps 6-jointed. 
Oviger 6-jointed ? no terminal claw. 
Legs short; genital apertures on the second coxe of all the legs in female. (Male as yet 
unknown.) 
I have considered the affinities of this and of the succeeding genus in the intro- 
duction to this memoir. 
