PYCNOGONIDA. 19 
the three following joints are 9:8°5:11°5. The tarsus is very small, and of the 
normal shape. The propodus is one-third the length of the femur, very slightly 
curved. At the ventral side of the extremity is a stout claw, with two well-developed 
auxiliaries ; the heel does not project beyond the insertion of these claws. The joint 
is uniformly clothed with short spinous sete, and there is dorsally a projecting fringe. 
Ventrally there is a row of stout spines, of which some half-dozen, not very regular 
in their position, are very prominent (fig. 3). The entire limb is uniformly and 
densely clothed with very short, stiff setee, and these, as is usually the case, are more 
numerous and longer on the second tibia; the distal fringe on this latter jomt 
is prominent, with at least one stout spine ventrally. The ventral sete on the tarsus 
are also spinous, one being particularly large. The lateral lme is very prominent 
from the lateral processes to the tarsus, both inclusive. 
The specimen is a female and bears Genital apertures on a swelling of the second 
coxa of every leg. 
Winter Quarters, inside the 20-fm. line. 
A specimen was taken off Cape Wadworth, Coulman Island, which, notwithstanding 
certain important differences, I cannot regard as being specifically distinct. It is a 
male, and rather larger than the type. The obvious differences le in the much 
greater length of the lateral processes and the character of the ventral spines on the 
propodus (fig. 3a). With regard to the first of these features, the third lateral process 
of the right side is but little more than half the length of the others ; the first coxa, the 
only joint of that appendage that exists, is also abnormally small, though there are no 
definite traces of injury. The other feature rests on the armature of the propodus. 
The ventral surface of this joint bears proximally three very stout spines, and from 
there to the extremity is a band of spinous setze. 
The length of the body is 12mm., of the trunk only 9mm., and its extreme width 
is 6mm., rather larger, especially in the last measurement, than the type. The 
chelifori (scape) and the abdomen are a little shorter. The oviger differs only in 
being much stronger; the setee are more numerous and also stronger. The fifth joint 
is however longer, nearly equalling the fourth. This is a not uncommon sexual 
difference. The lateral processes and the first coxa exhibit in a less degree the 
tubercular processes of the type. 
The proportions of the three principal joints of the legs are 9°75 :8°5, and 12, 
a difference of no importance. These limbs are setose throughout, though the setze 
are rather deficient proximally, becoming much more abundant on the tibia. Ventrally 
they are very small, stiff, and crowded ; dorsally much less numerous. They have among 
them a number of much longer and more slender setw. The tarsus 1s coarsely setose 
ventrally, with one very prominent spine. The distal fringes of the jomts are not 
strongly developed ; that of the second tibia is chiefly ventral and spinous. The lateral 
line is very distinct from the lateral process to the end of the second tibia. The femur 
is swollen ventrally near the middle, and bears a very short but stout tubular duct. 
D 2 
