AMPHIPODA. 23 



Female : Body scarcely compressed laterally. Mesosome segments very short, 

 subequal, the first with a transverse fold. First pleon segment about twice as 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 antennae, 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 antennse 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 setae. Flagellum 

 ten-jointed, shorter than the peduncle. 



Lower antennse : 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 setse on the front margin. 



Third perseopods : First joint oblong-oval, the front margin somewhat produced, 

 both margins with long setse, on the distal half; third joint almost as wide as the 

 first, densely setose. 



Fourth perseopods : First joint ovoid, the hind margin denticulate, sparsely setose ; 

 the front margin with longer setse which are plumose at the lower angle, otherwise as 

 in the third pair. The dactyli in all the perseopods 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 (E. 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 antennse and second 

 joint of the mandibular palp. 

 Length of female 30 mm. 



FAM. EPIMERIIDvE, G. 0. Sars. 



Epimebia inbrmis. (PI. 8, fig. 13.) 

 Epimeria inermis, A. 0. Walker. 



Jan. 22, 1902, 500 fm., two females, length 35 mm. ; W.Q., 14 July, 1908, Hole 10, 

 107 fm., one dissected; W.Q., 2 and 4 Sept., 1903, one; W.Q., 8 Sept., 1903, one 

 young. 



XT 



VOIi. III. - 



