COPEPODS GATHERED BY ALBATROSS—WILSON 213 
Female.—Metasome elliptical, a little more than twice as long as 
wide, the forehead triangular, coming to a sharp point, the fourth and 
fifth segments fused and smoothly rounded at the posterior corners, 
without hairs. Urosome very slender, half as long and a third as wide 
as the metasome and 4-segmented. Genital segment as long as the entire 
abdomen and twice as long as wide, with a peculiar process on the right 
side near the posterior corner that is plainly visible in dorsal view. 
This process is laminate and extends diagonally backward with a 
rounded tip and a small spine on the outer margin at the base of the 
rounded portion. Abdomen 3-segmented, the segments diminishing 
considerably in length and a little in width backward. Caudal rami 
as long as the anal segment, longer than wide, each with 4 setae, two 
terminal and two on the outer margin, all about the same length. 
First antennae filose extending to the tips of the caudal rami and 
sparsely setose. The exopod of the second antenna is a little longer 
than the endopod; the spines on the exopods of the swimming legs are 
short and stout, and there is an incision in the segment inside the base 
of each spine. Total length 3.10mm. Metasome 2.10 mm. 
Male.—Body elongate and slender ; metasome corresponding to that 
of the female. Urosome 5-segmented; the genital segment propor- 
tionally much shorter than that of the female and without protuber- 
ance. The antennae, mouth parts, and first four pairs of legs are the 
same as in the female. The fifth legs are surprisingly large for so 
small a species and reach far beyond the tips of the caudal rami (fig. 
83). The second basipod of the right leg is considerably swollen, and 
the basal half of the endopod is also swollen, while the distal half tapers 
to a sharp point. The proximal portion of the exopod is of uniform 
width and just reaches the tip of the endopod. The distal portion is 
longer than the proximal, very slender, slightly curved, and tapered 
to an acuminate point. The second basipod of the left leg is much 
longer than that of the right and swollen a little proximally. The 
endopod is entirely lacking; the second segment of the exopod has a 
long terminal] stylet swollen at its base and tapered to an acuminate 
point. Opposite the base of the stylet is an inner process with spines 
along its margin and at its tip and between the two is an inner 
unarmed process. Total length 2.65 mm. Metasome 1.80 mm. long. 
Allotype male.—U.S.N.M. No. 70732; station 4671, latitude 12°07’ S., 
longitude 78°28’ W. 
Remarks.—The fifth legs of a fully matured male are shown in figure 
83, while those of a juvenile male appear in figure 88. The laminate 
process on the right margin of the female genital segment and the 
peculiar stylet at the tip of the left fifth leg of the male are disinguish 
ing characters. 
