COPEPODS GATHERED BY ALBATROSS—WILSON 261 
mented, a little more than one-fifth as long as the metasome; genital 
segment asymmetrical, with a lobe at the right posterior corner over- 
lapping the first abdominal segment. When seen in lateral view this 
lobe also projects dorsally and aids greatly in identification. The 
three abdominal segments diminish in both length and width back- 
ward; the caudal rami are wider than long and divergent. 
The first antennae reach the posterior end of the genital segment ; 
Farran makes this same statement in his text, but in his figure showing 
a lateral view of the female the antenna reaches the middle of the 
caudal ramus. The exopod of the second antenna is nearly twice as 
long as the endopod, and the end segment is one-half longer than the 
second segment. The chewing blade of the mandible is narrowed 
distally and is armed with a large 2-pointed tooth at the outer corner, 
four smaller acute teeth along the edge and a curved seta at the inner 
corner. The five inner lobes of the second maxilla differ somewhat in 
size and the two kinds of sensory organs on the end segments are large 
and well developed. The basal segment of the maxilliped is twice as 
wide but not so long as the second segment. Both rami of the second 
and third legs have spines on the surface, those on the exopods minute, 
those on the endopods larger but fewer in number. ‘The fifth legs are 
entirely lacking as in the preceding species. Total length 3.50 to 3.70 
mm. Metasome 3.30 mm. long, 1.33 mm. wide. 
Male.—Usual form similar to that of the female, but the urosome is 
5-segmented and the genital segment is symmetrical without any 
dorsal process. The antennae, mouth parts, and first four pairs of 
legs correspond to those of the female, and the fifth legs differ in 
detail from those of other species. The second basipod of the right 
leg is swollen to twice the diameter of the first basipod and is fully as 
wide as long. The first exopod segment extends considerably beyond 
the articulation with the second segment in the form of a curved finger 
like process (fig. 158). The outer side of the second segment is 
articulated with the inner side of the first segment at the base of the 
finger process. The proximal end of the second segment is enlarged 
into a trilobed knob, which extends behind the articulation. The end 
segment is bent at right angles near its center with a long process, 
toothed at its tip, on the outer angle of the bend. The right endopod 
extends beyond the second joint of the exopod, is curved and blunt at 
the tip and has a sharp process on the inner margin near the base and 
another toward the tip. The left endopod is shorter than the exopod, 
laminate and truncate at its tip, with a sharp spine at the center of the 
margin and a row of coarse teeth distal to the spine. The left exopod 
is also laminate, the second segment enlarged at its distal end with an 
outer setose process. Total length 3.25 mm. 
