COPEPODS GATHERED BY ALBATROSS—WILSON 309 
the genital segment, with an acute spine on each lateral margin. The 
one on the left is long and narrow and points diagonally backward, 
while the right one is shorter and wider and extends outward at right 
angles to the urosome axis. To the dorsal surface of the segment at 
the right posterior corner are attached two rounded laminae. The 
smaller anterior one is elliptical in outline and is usually turned down 
over the ventral surface. The larger posterior one extends backward 
and inward above the anal segment and caudal rami and reaches the 
tips of the caudal setae. There is another smaller lamina attached 
to the posterior margin of the segment and extending back over the 
anal segment and beyond its posterior margin. Usually these three 
complete the laminate armature of the urosome, but in one female there 
was a fourth large lamina attached to the left side and sweeping around 
backward and overlapping the one from the right. These laminae 
are chitinous and perfectly transparent but of course brittle and likely 
to be broken off. They still remained intact, however, in 75 percent of 
the specimens. The genital protuberance on the ventral surface of the 
genital segment is at the posterior margin, and in most of the females a 
single spermatophore was attached to it. The long narrow discharge 
tube swept around and up over the right side of the urosome, and the 
body of the spermatophore trailed backward on the top of everything 
else. The anal segment is much shorter than the first abdominal seg- 
ment and invaginate posteriorly. The caudal rami are but little 
longer than wide, with the outer seta at the center of the outer margin 
and the others terminal. 
The first antennae are very slender and often extend forward and a 
little divergent; when turned backward they reach the first abdominal 
segment. The exopod of the second antenna is only one-fifth as long, 
as the endopod is very slender and has five terminal setae. The man- 
dible has five larger teeth on the outside of the chewing blade and four 
smaller ones on the inside; the palp is biramose and very indistinctly 
segmented. The exopods of the first four pairs of legs are 3-segmented, 
the endopods of the first legs 3-segmented, of the others 2-segmented. 
In the fifth legs the exopod ends in a long stout spine, with another 
stout spine at about the center of the inner margin and three minute 
spines on the outer margin. The endopod is half as long as the exopod 
and its distal half is bifurcate, the branches blunt. ‘Total length 2mm. 
Metasome 1.40 mm. long, 0.67 mm. wide. 
Types.—U.S.N.M. No. 74141; station 5340, latitude 10°55’51”" N., 
longitude 119°14’12’" E., Malampaya Sound, Palawan, Philippine 
Islands. 
Remarks.—In the genus Pontella the urosome of some species has 
chitinous attachments that cannot be classed as appendages. Here is 
an example of the same thing in the genus Pontellopsis, and these 
