REPORT ON THE COPEPODA. 105 



angles of the abdominal segments (fig. 11) are pectinated with small spines, and the 

 caudal setae are finely aculeated along their whole length ; the last abdominal segment in 

 the female is very short — almost obsolete— and the distal margins of the last two segments 

 are fringed with delicate spines. The caudal laminae are about as broad as long, the 

 principal setae considerably longer than the abdomen, and finely aculeated throughout. 



Two or three specimens only found in a gathering from Betsy Cove, Kerguelen 

 Island. 



Pontostratiotes} n. gen. 



Anterior antennae (PL XLIV. fig. 4) ten-jointed ; posterior (fig. 5) two-branched, the 

 inner branch four-jointed, springing from the apex of the first joint of the main branch. 

 Mandible very strongly toothed (fig. 6), and bearing a large two-branched palp. Maxilla 

 (fig. 7) stout, bearing numerous stout marginal setae ; first foot-jaw (fig. 8) short and 

 stout, divided into several marginal setiferous processes ; second foot-jaw (fig. 9) slender, 

 two-jointed (?), bearing numerous setae on the apex and inner margin, without a terminal 

 claw. Swimming feet of the first four pairs two-branched, all branches three-jointed 

 (fig. 10) ; fifth pair (fig. 11) one-branched, three-jointed, not foliaceous. Carapace 

 armed with several excessively long and strongly-toothed spines, which are directed 

 backward ; anterior antennae likewise provided with numerous, variously-shaped, spine- 

 like processes. 



Pontostratiotes abyssicola, n. sp. (PL XLIV. figs. 1-11). 



Length, 1-1 5th of an inch (1*6 mm). The head is extended on the ventral aspect into a 

 strong triangular process, and laterally, just below the base of each anterior antenna, has a 

 stout, slightly curved spine projecting almost at a right angle from the body ; the posterior- 

 part of the head and anterior part of the thorax have three pairs of very long, strong, and 

 sharply-pointed spines, which are marginally pectinated with numerous sharp tooth-like 

 prickles. The first pair of these spines (fig. 3, a, a) arises from near the posterior border of 

 the head, at some distance from the middle line of the body, and projects backwards to 

 about the second or third abdominal ring ; the second pair (b, b) arises on a level with the 

 first pair, but from the lateral aspect of the body, and projects backwards to a point slightly 

 behind the apices of the first pair ; the third pair (c, c) springs from the sides of the first 

 thoracic somite, and being of equal length with the anterior spines, extends proportionately 

 further backwards ; the posterior borders of the thoracic and abdominal segments are 

 strongly and irregularly toothed, especially on the dorsal aspect. Anterior antennae about 

 two-thirds the length of the cephalothorax, ten-jointed, the first two joints nearly 



1 itovTog, sea ; orgesT/aT*!?, a soldier. 



(ZOOL. CHALL. EXP. PART XXIII.— 1 883.) Z 14 



