54 T. V. HODGSON. 
The Ovigers arise ventro-laterally, close to the angle formed by the cephalon and 
the first lateral process. They are extremely small, and it is open to question whether 
they are mature or not. As the removal of one of these appendages involves serious 
risk to the only specimen, it cannot be very satisfactorily described. Not less than 
six joints can be distinguished, the first three of which are very small. “A small body- 
process from which the appendage arises may be an additional joint. The terminal 
joint is the longest, it is rounded at the extremity and does not carry any trace of a 
claw, nor are sete: of any kind discernible. 
With regard to the Legs. the first coxa has already been alluded to as the largest 
of the three, the other two are very little if any shorter, and the second is dilated 
distally. It is difficult to get the limb in one plane for measurement, and the 
joints appear subject to some variation. The proportion of the joints appears to be 
3°5: 8: 2°5: ‘5: 2°5. The femur is stout, and the two following joints decrease in 
calibre. The limb bears a very few scattered setee, most numerous on the second 
tibia. The tarsus is very small and cup-like, with two or three spinous sete 
ventrally ; the propodus is proportionately long, slightly curved, and bearing a few 
sete. On its ventral margin it carries a row of sete, but there is nothing very 
distinctive about them. The claw is short and stout, and is accompanied by two 
slender auxiliaries. 
The only example of this peculiar species is a female, and the Genital apertures 
are found in the middle of the second coxee of all the legs. 
Taken by the dredge in Winter Quarters before the ship was frozen in. Ten 
fathoms or less. 
AUSTRORAPTUS. 
Body with spurs on the lateral processes and first cox. Segmentation very imperfect. 
Proboscis stout at the base, terminating in a point. 
Chelifori rudimentary. 
Palps 6-jointed. 
Ovigers 10-jointed, without terminal claw or denticulate spines. 
Legs comparatively long, terminal claw with two auxiliaries. 
AUSTRORAPTUS POLARIS. 
(Plate VIIL, fig. 2.) 
Specific characters :— 
Body rather stout, with prominent spurs on the lateral processes and the first cox. 
Proboscis half the length of the trunk, pointed. 
Palp 6-jointed, the terminal joint is twice as long as its predecessor, and articulated at an 
angle to it. 
Oviger 10-jointed, without terminal claw or denticulate spines. 
Legs long, terminal claw with two small auxiliaries. 
The body is rather robust, with long lateral processes which arise close together 
and diverge considerably. These are provided dorsally with a pair of stout tubercular 
spines which exist also on the first coxee, where they are greatly exaggerated. 
