664 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Crustacea. 



its extremity, the two terminal ones being sutequal, the proximal nearly twice as 

 long. 



The second maxilla is of about the same width throughout ; it is indistinctly 

 cleft at the end, the outer lobe being much narrower than the inner ; the whole of the 

 extremity is covered with a thick fur of short setae ; other setae are found along 

 the inner border and on the distal portion of the outer border. 



The maxillipedes have the first joint short and the epipod short and rounded at 

 the end ; the second joint is large, expanded, inner margin straight, outer margin 

 strongly curved, both fringed with long setae ; the terminal part of the maxillipedes 

 forms a single piece, with only faint indications of division into separate joints ; the 

 epignath is shorter than the terminal lobe and narrower, and appears to have a 

 separate small joint at the end, the whole of it being thickly covered with setae. 



The legs (fig. 17c and lid) are all approximately the same size and shape, the 

 seventh leg only slightly longer than the first ; they bear long stout setae of the 

 usual character, especially on the inner margin of the merus and the carpus, and all 

 the joints are covered with fine short setae, which are particularly noticeable on 

 the propod and on the dactyl ; the dactylar seta has the same structure as in 

 Trichoniscus — viz., it consists of a basal portion which divides into two branches, the 

 inner one of which at once splits up into further fine divisions, while the outer is 

 continued as a long plumose seta ; the dactyl also bears on the inner side a secondary 

 nail and a stout curved seta arising near it and extending a little beyond the 

 extremity of the dactyl. 



The fleofoda appear to be similar to those of Trichoniscus. According to Sars, 

 the first pair of pleopoda in the female of this genus are very small and rudimentary, 

 while those in the male are well developed, with the inner ramus strongly produced, 

 biarticulate, terminal joint spiniform ; I accidentally failed, however, to find the first 

 pleopod in the single male specimen that I dissected. The second pleopod of the 

 male (fig. 17e) has the inner branch long and narrow, the end fringed with setae, and 

 apparently undivided and not marked off from the short but wide basal joint. The 

 third pleopods (fig. 17/) have the inner angle of the basal joint somewhat produced 

 and fringed with setae ; the inner branch is much smaller than the outer, which 

 is operculiform, and articulated to the outer portion of the basal joint, and has the 

 outer margin fringed with fine setae. The fourth and fifth pleopods are similar 

 to the third, though the shape of the outer branch and the proportional sizes of the 

 two branches are not quite the same. 



The urcpods have already been sufficiently described. 



Fam. SCYPHACIDAE. 



Genus Scyphoniscus, Chilton, 1901. 



Distribution. — At present known only from New Zealand and adjacent islands. 



In order to include the following species the generic characters, which were 

 based on those of the single New Zealand species then known, will require slight 

 alteration. The first character — "body rather narrow, lateral parts not greatly 

 developed "^ — will have to be omitted, as the present species is fairly broad, especially 

 in the female. The antennae should be defined as having the flagellum consisting 

 of a few ill-developed joints, instead of " three ill-developed joints," as the actual 

 number of joints seems to vary to some extent 



