COPEPODS GATHERED BY ALBATROSS—WILSON 253 
LOPHOTHRIX SARSI, new species 
PLATE 12, Figures 126-136 
Station 4687. Four females from this station were identified by 
Sars as a new species. He drew figures of all the appendages but sug- 
gested no name for the new species. Accordingly, the species is 
named for Sars and his figures are reproduced as a basis for 
description. 
Female.—Metasome elongate-elliptical, nearly three times as long 
as wide and narrowed but little at each end. Forehead angular in 
dorsal view, with a sharp apex tipped with a thin median crest pro- 
jecting dorsally and anteriorly. ‘The anterior surface of the head is 
prolonged ventrally into a wide and flattened rostrum inclined back- 
ward between the bases of the first antennae. This rostrum has con- 
vex sides and is narrowed distally with a reentrant tip holding two 
small juxtaposed spines (fig. 128). The fourth and fifth segments 
are separated, and the posterior corners of the latter are carried back 
beyond the center of the genital segment. The urosome is 4-seg- 
mented and less than one-sixth as long as the metasome; the genital 
segment is as wide as long and somewhat flask-shaped, the ventral 
surface scarcely protuberant. The three abdominal segments are 
about the same width and length, a little narrower than the genital 
segment and more than twice as wide as long. The caudal rami are 
wider than long, and each is armed with four setae as long as the whole 
urosome. 
The first antennae reach the caudal rami and are rather sparsely 
armed with short setae. The two proximal segments of the exopod of 
the second antennae are considerably thickened, and the end segment 
is longer than the second segment. The chewing blade of the mandi- 
ble has five inner teeth acutely pointed and three outer teeth much 
larger and bidentate at their tips, and a curved seta at the inner angle. 
The second maxilla has four inner lobes, the proximal one with four 
setae, the others with three each, and the terminal segments carry the 
characteristic cauliflower appendages. The maxilliped is 7-seg- 
mented, the segments armed with the following number of setae 
beginning at the base 6:5:3:3:2:2:3. 
In the first leg the endopod just reaches the distal end of the second 
exopod segment. In the second and third legs there are no spines on 
the ventral surface of the exopod, and those on the endopod are 
arranged as in figures 134 and 135. The fifth legs are 3-segmented, 
and the end segment carries four setae, one, the longest, at the inner 
distal corner, two terminal, and one at the center of the outer margin, 
all four nearly parallel. Total length 3.75 mm. Metasome 3.33 mm. 
long, 1.15 mm. wide. 
