306 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
spicuous in dorsal view, the two giving rise to the specific name. The 
caudal rami are longer than the anal segment and wider than in the 
female. 
The first antennae are about the same length as in the female, 
and the right one is geniculate. As can be seen in figure 455, the 
basal segments are considerably widened and the ones next to the 
swollen knob are narrowed. The knob is abruptly widened, and 
its distal segment is toothed on the inner margin. The segment 
next to the hinge has along its inner margin a row of small teeth; the 
terminal portion beyond the hinge is very slender and indistinctly 
segmented. The second antennae, mouth parts, and first four pairs 
of legs are like those of the female. The fifth legs are exceptionally 
simple; the hand of the chela on the right leg is triangular, the apex 
jointed to the second basipod, the finger at one basal angle, the thumb 
at the other. The end segment of the left leg is tipped with two 
small spines. Total length 1.54 mm. Metasome, without posterior 
spine, 1.15 mm. long. 
Types.—U.S.N.M. No. 74187 [types not returned by Dr. Wilson], 
Port Binanga, Luzén, Philippine Islands. 
Remarks.—This species can be recognized by the perfect sym- 
metry of the urosome in the female and the long sickle-shaped spine 
at the right posterior corner of the metasome in the male. 
PONTELLOPSIS BREVIS (Giesbrecht) 
PLATE 30, FIGURE 458 
Monops brevis GiEsBRECHT, Atti Accad. Lincei, Rome, ser. 4, vol. 5, sem. 2, p. 28, 
1889; Fauna und Flora des Golfes von Neapel, monogr. 19, pp. 487, 497, pl. 
26, figs. 16, 35, 36; pl. 41, figs. 42, 52, 70, 1892. 
Stations 3980; 5223; 5348. Established by Giesbrecht upon 
specimens from the Abrolhos Islands off the coast of Brazil but not 
appearing in any of the plankton lists. These Albatross specimens 
are the first from the Pacific Ocean. The fifth leg of the female, 
shown in the figure, is quite distinctive in the relative lengths of the 
rami and the spinules on the outer margin of the exopod. The 
caudal rami are twice as long as wide, and the genital segment has two 
small fingerlike processes at its right posterior corner. 
PONTELLOPSIS DIGITATA, new species 
PLATE 31, Ficures 463-465 
Station 3980. Two females were found in the plankton of this sta- 
tion between Honolulu and Kauai Island in the Hawaiian Islands. 
They cannot be referred to any of the known species. 
Female——Metasome broadly elliptical, a little more than twice as 
long as wide; head evenly rounded in front, with a median projection 
