64 
T. Y. HODGSON. 
\qp7. C.X6 
10‘S- H“f 
angle. In its perfect condition it is rather long and slender, especially the distal 
half. Something like one-half of this slender portion, at the tip of the claw, is 
flattened dorso-ventrally to form a sort of protective shield to a thin membranous fold 
lying like a knife-edge on the under surface of the claw throughout its distal half 
(fig. 3a). The claw is covered with very minute hairs. The characteristic spines are 
very numerous, and are arranged in two sharply defined lines followed by a closely 
arranged group in which five rows can be distinguished. A distinct interval separates 
the first two rows from each other and from the group referred to above. The 
spines of the first row are long, slender, lanceolate in shape, and set as closely 
together as possible (Plate X., figs. 5 and 6). Those of the second row are approxi¬ 
mately double in number, shorter and more spathulate, their essential structure being 
the same. They have a fairly stout base tapering to the centre, where it becomes 
a flat blade, the entire margin of which is provided with minute teeth visible 
under a one-inch objective. In the group of spines there are five rows arranged 
in an imbricate manner and as the spines of these rows alternate fairly regularly 
oblique rows of eight spines may be distinguished in the broadest part of the group. 
In structure they resemble those of the second row. Setae are sparsely distributed 
over the appendage and though very minute they are not difficult to distinguish. 
The legs of the numerous specimens average between 58 mm. and 106 mm. in 
length ; the proportions of the joints do not, however, vary greatly. The first coxa 
bears a reddish line marking a very shallow groove dorsally and ventrally ; the lateral 
line begins on each side of the second coxa, and is continued to the extremity of the 
limb. The three coxae are sub-equal. The femur is the largest joint of the limb 
as a rule, the other joints decreasing in size to the extremity. The claw is about half 
the length of the propoclus. 
The Genital apertures occur on the second coxa of all the limbs of both sexes. The 
legs are apparently quite smooth, even to the touch, but close examination shows faint 
traces of rows of setae. In some of the larger specimens these are a little more conspicuous. 
Specimens of this species were taken in Winter Quarters in depths varying from 
5 to 178 fathoms, and the name is derived from the fact that two of them had to be 
taken to the ship dry, a distance of nearly two miles, at a temperature of - 50° Fahr. 
They suffered in consequence. Another specimen taken in 300 fathoms ; bottom, mud ; 
oft’ the Barrier, 27.1.’02, is referred to this species. 
COLOSSENDEIS RITGOSA. 
(Plate IX., fig. 4 ; Plate X., fig. 7.) 
Specific characters:— 
Proboscis half as long again as the body, slender, dilated about the middle, with a median row of 
curved spines dorsally along the proximal half. 
Body smooth, with lateral processes widely separated, and, with the first coxa, dilating distally. 
Palps 10-jointed, the eighth very short; the ninth rather more than twice its length ; the terminal 
one a little larger still. 
Legs provided with rows of spines, claw large. 
