AMPHIPODA. 23 
Female: Body scarcely compressed laterally. Mesosome segments very short, 
subequal, the first with a transverse fold. First pleon segment about twice ne long, 
the second shorter, the third much longer than the first ; the last mesosome and first 
two pleon segments with a dorsal tubercle near the middle; the third pleon and first 
urus segments with a shallow carina; hind margin of the third pleon segment rounded. 
First four side-plates as deep as the segments. 
Head: Rostrum shorter than the rest of the head and reaching the end of the 
first joint of the upper antenne, the lower margin scarcely concave ; the front sulcate, 
not carinate. Eyes contiguous, occupying the greater part of the rostrum, varying from 
red to brown. 
Upper antenne not quite reaching the end of the second joint of the lower; the 
first joint rather longer and twice as wide as the second, widening distally ; the second 
twice as long as the third; first and second with tufts of plumose sete. Flagellum 
ten-jointed, shorter than the peduncle. 
Lower antenne: First joint wider than long, setose ; second stout, longer than the 
third, which has a long spine near the middle and another at the distal end, both on 
the lower margin. 
Mandibles: Primary cutting edge with two short blunt teeth, secondary with a 
long and a short tooth, molar tubercle bicuspidate ; first joint of the palp very short 
and obconical; second subequal to the third in length, but more than twice as wide 
near the base, both joints with long spine-like setz on the front margin. 
Third perxopods: First joint oblong-oval, the front margin somewhat produced, 
both margins with long sete, on the distal half; third joint almost as wide as the 
first, densely setose. 
Fourth perzeopods : First joint ovoid, the hind margin denticulate, sparsely setose ; 
the front margin with longer setze which are plumose at the lower angle, otherwise as 
in the third pair. The dactyli in all the perzeopods except the last (which are broken 
in all the specimens) are almost as long as the fifth joints. 
The gnathopods and rest of the animal agree with G. rostrata, Stebbing, from 
which species this differs in the conspicuous eyes, the different form and proportions 
of the rostrum, mesosome segments, first joint of the upper antennz and second 
joint of the mandibular palp. 
Length of female 30 mm. 
FAM. EPIMERIID, G. O. Sars. 
EPIMERIA INERMIS. (PI. 8, fig. 13.) 
Epimeria inermis, A. O. Walker. 
Jan. 22, 1902, 500 fm., two females, length 35 mm.; W.Q., 14 July, 1905, Hole 10, 
107 fm., one dissected; W.Q., 2 and 4 Sept., 1903, one; W.Q., 8 Sept., 1903, one 
young. 
VOL, III, H 
