Chilton. — On New Zealand Sessile-eyed Crustacea. 259 



Parancenia typica, sp. nov. PI. xix., fig. 1, a to h. 

 Male.— Eyes rather large, situated on a pointed projection between the 

 bases of the antenna?. Upper antenna with basal joint of peduncle stout, 

 and about two-thirds the length of the second, third joint as long as the 

 first, flagellum about as long as the last two joints of the peduncle, second- 

 ary appendage nearly half as long as the primary. Peduncle of lower 

 antenna very slightly longer than that of the upper, last two joints equal in 

 length, flagellum half as long again as the last joint of peduncle. Both 

 antennae fringed below with numerous long hairs. First gnathopod with 

 carpus as long as propodos and nearly as broad, inferior edge fringed with 

 numerous setae arranged in about four transverse rows, propodos ovate, 

 both margins with numerous setae, one. or two stouter ones at the point 

 where the end of dactylos impinges. Second gnathopoda with m'eros some- 

 what sharply pointed at its distal end ; carpus very short, subtriangular ; 

 propodos very large, as long as the cephalon and first two segments of 

 pereion, subrectangular, produced on inferior edge into a stout short spine 

 defining the palm, distal portion of the palm nearly transverse, distinctly 

 marked off from the inferior portion by a stout spine, followed by a narrow 

 indentation, between which and the base of the dactylos is a low protu- 

 berance with the margin minutely crenate, palm thickly supplied with 

 setae variously arranged in tufts ; dactylos curved, with a low protuberance 

 on the inner margin near the distal end. Coxae of first pereiopoda (third 

 segment of pereion) deeper than the others, produced as far as the anterior 

 end of the coxae of the second gnathopoda and ending there in an acute 

 point, margin ornamented with small circular markings at intervals. Fourth 

 pair of pleopoda with the rami equal and as long as the peduncle, slender, 

 with setae on both sides and two or three longer ones at the ends, peduncle 

 with three or four setae on the upper margins and with a stout one at the 

 end between the two rami. Fifth pleopoda with the outer ramus as long as 

 the peduncle, inner one slightly longer, supplied with setae as in the fourth 

 pleopoda. Sixth pleopoda extending beyond the others, inner ramus 

 slightly longer than the outer, both longer than the peduncle and broader 

 (when viewed from above) than the rami of the two preceding pairs of ple- 

 opoda, setose on both margins, and ending acutely without setae ; peduncle 

 stout, with a strong seta on the upper margin at the distal end. Telson 

 single, ending in two conical projections each bearing a stout seta. 



Female.— Diffexs from the above in having the coxae normal ; second 

 gnathopoda only slightly larger than the first which it resembles in shape, 

 but has the carpus shorter and subtriangular. 



Length about a inch. 



Hab. Lyttelton Harbour. 



