COPEPODS GATHERED BY ALBATROSS—WILSON 199 
between Japan and Honolulu” and placed in the genus “Leuckartia 
(?).” Another imperfect male was taken in the Siboga plankton 
south of Ceram in the Malay Archipelago and was described and 
figured as Disseta scopularis by Scott. These are all the specimens 
hitherto obtained. Sars identified 14 copepods from the six Alba- 
tross stations listed above as a new species of Disseta. He did not, 
however, examine the appendages in detail, and as soon as the fifth 
legs of the male were carefully observed it became apparent that the 
specimens corresponded to those described by Brady and Scott. Since 
the earlier specimens were mutilated and confined to the male sex, a 
full description of both sexes is given. 
Female.—Metasome an elongated ellipse nearly three times as long 
as wide, with a small rounded knob at the center of the forehead above 
the rostrum. The latter is short, lamellar, and tipped with two 
slender filaments and is entirely concealed in side view by the bases 
of the first antennae. The posterior corners of the thorax are bluntly 
rounded and project backward a little on either side of the genital 
segment. 
Urosome 4-segmented and slender, one-third as wide as the meta- 
some and half as long if the caudal rami are included. The genital 
segment is one-half longer than wide with straight sides and the anal 
segment is fused with the caudal rami. The left caudal ramus is 
longer than the right and each is armed with a long naked seta and 
three plumose setae. The naked seta on the left ramus is longer than 
the entire body, a considerable median portion having been cut out in 
the figures. 
The first antennae are slender and reach four segments beyond the 
tips of the caudal rami. The endopod of the second antenna is 
shorter than the exopod, and both rami are armed with unusually long 
and slender setae. On the chewing blade of the mandible the three 
outer teeth are very much larger than the series of 10 or 12 inner ones. 
The second maxilla has six inner lobes, each tipped with three to five 
setae. The maxilliped and the first four pairs of legs are similar to 
those of palwmboi, but the fifth legs are quite different. There is a 
much greater inequality in size between the two rami, the exopod 
being four times as long as the endopod. ‘The end segment on the 
exopod is more than twice as long as wide, with two outer spines and 
one inner seta. The basal segment of the endopod has one inner 
seta, the middle segment two inner setae, and the end segment three 
inner, two terminal and two outer setae. Total length 10 to 11 mm. 
Male.—A little smaller than the female with the same general pro- 
portions except that the urosome is 5-segmented. The anal segment 
is fused with the caudal rami, and the latter show the same asymmetry 
