REPORT ON THE AMPHTPODA. 815 



spine in front and an apical seta behind nearly as long as the slender finger ; the finger 

 is more than half the length of the fifth joint, and has two dorsal feathered cilia. 



Fifth Perseopods. — Side-plates small. First joint greatly dilated, front margin 

 smooth, with an apical spine, hind margin slightly serrate ; the broad lower margin 

 behind and below the second joint is smooth ; the third joint much shorter than the 

 fourth, vA\h sette on the front margin, the lower ones long and plumose, a group also on 

 the apex behind ; the fourth joint a little longer than the fifth, and much broader, with 

 numerous feathered setse along the front, and distally and apically on the hinder margin; 

 the fifth joint with setae on both margins; the finger more than half the length of the 

 fifth joint, with one dorsal cilium. 



Pleopods. — The coupling spines have an oval bulbous base, followed by a narrow 

 shaft with three small lateral retroverted teeth and a sharply bent tip ; the pair is 

 accompanied by a plumose seta. The cleft spines are three in number on the first joint 

 of each inner ramus ; the joints number sixteen on the outer, thirteen on the inner ramus. 



Uropods. — Peduncles of the first pair a little longer than the rami, with six or seven 

 slender spines along the upper margin; the rami subequal, with a coujile of spines on the 

 proximal half of the upper margin ; peduncles of the second pair stout, equal in length 

 to the longer ramus, with seven spines on the upper and two near the lower margin ; the 

 longer ramus with three spines on the proximal part of the upper margin, the shorter 

 ramus smooth ; peduncles of the third pair short, distally set with spines, the rami long, 

 lanceolate, subequal, the lower with a narrow nail tipped with two setae ; plumose setae 

 round most of both margins of both rami, that with the nail having also short spines 

 along the inner margin. 



Telson extending beyond the peduncles of the third uropods, much longer than broad, 

 not tapering, cleft almost to the root, dehiscent for some distance, though not widely 

 except where the margins curve outwards to form the rounded apices ; there is a slight 

 contraction below the centre, the outer margins being here armed with a small row of 

 setiform spines ; on the outer side of each apex a small cavity contains a spine and a cilium. 



Length. — The specimen, in the position figured, measured two-fifths of an inch. 



Locality. — Station 162, April 2, 1874; Bass Strait; depth, 38 fathoms; bottom, 

 sand and shells ; surface temperature, 63° -2. One specimen, surface. 



Remarks. — The specific name refers to the place of capture. That the specimen was 

 a male may be taken for granted from the structure of the lower antennae. From Phoxus 

 villosus. Haswell, this species differs in the size and shape of the eyes, in the flagella of 

 the upper antennae, in the relative sizes of the gnathopods, and in the third and fourth 

 joints of the second gnathopods ; from Phoxiis batci, Haswell, it differs in regard to the 

 eyes, the peduncles of the upper antennae, the gnathopods, and the ramiof the third 

 uropods. 



