258 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
and a larger outer one and a curved seta at the outer corner. Second 
maxilla rather stout, with the inner lobes well developed, each tipped 
with two long and one short setae, with an extra long one on the 
proximal lobe. The sensory organs on the two end segments are 
rather poorly developed. The basal segment of the maxilliped is but 
little stouter than the second segment, the fourth segment is as long 
as the three end segments combined, and the setae of the entire ap- 
pendage are short and weak. Basal segment of first exopod without 
an inner seta; endopods of second, third, and fourth legs and exopods 
of the latter with scattered spines as shown in figures 166-168. Fifth 
legs present and 2-segmented, the proximal segment short, the distal 
segment tipped with a huge curved spine five times as long as the seg- 
ment itself with a row of isolated teeth along its outer distal margin. 
Total length 3mm. Metasome 1 mm. wide. 
Male.—A little smaller than the female, the fourth and fifth seg- 
ments similarly separated, but the latter without spines. Urosome 
5-segmented, the genital segment entirely symmetrical, its dorsal sur- 
face not raised and without a spine. Antennae, mouth parts, and 
first four pairs of legs like those of the female, the fifth legs having 
the general form found in this genus but differing in detail. The 
second basipod of the right leg is swollen more than the first and the 
exopod is 3-segmented, the first segment with a knob at the inner 
distal corner. The second segment has a sickle-shaped process on its 
inner margin at the base and projects distally beyond the joint with 
the third segment. Consequently the third segment is apparently 
articulated to the inner margin of the second segment instead of to 
its end. This third segment is bent at right angles near its center 
and the terminal clawlike part is turned backward and overlaps ths 
sickle process on the base of the second segment. The right endopod 
is 1-segmented, with a single knob near the center of the outer margin. 
The two left basipod segments are cylindrical and slender; the two 
combined reach the tip of the first exopod segment of the right leg. 
The left exopod is 3-segmented, the proximal segment with an angular 
process on its inner margin, the two distal segments somewhat widened. 
The end segment has a rounded process and a soft pointed filament 
on its inner surface; its rounded tip is covered with hairs. The left 
endopod is 1-segmented and nearly as long as the exopod, with two 
angular processes on its outer margin and three minute teeth at its 
tip. Total length 2.95 mm. 
Lypes.—U.S.N.M. No. 70738; off Funafuti, Ellice Islands. 
femarks.—As characters favoring the placement of this new species 
in the present genus where Sars placed it, there are the presence of 
a frontal lens on the head, the absence of a frontal crest, the separation 
of the fourth and fifth segments, the structure of the rostrum, and 
