Chilton. — Additions to the New Zealand Crustacea. 73 



ends. The first pair of pleopoda are modified so as to form an operculum 

 covering the others ; one of the plates, the outer I think, is long and broad 

 so that it extends along the whole of the under side of the pleon ; the inner 

 plate appears to perform no special function, it is small and narrow, ap- 

 parently becoming rudimentary (fig. 4/). The setae on the pleopoda are 

 long and fringed on each side with long plumes, which are exceedingly 

 delicate. 



Cubans rugulpsus, Miers. (Cat. Stalk- and Sessile-eyed Crustacea of N.Z., 



p. 96.) 



This species was described by Mr. Miers from specimens in the collec- 

 tions of the British Museum. His specimens appear to have been imperfect, 

 for he neither describes nor figures the antennae. I have found it abund- 

 antly at Eyreton, and also in the bush at Oxford. The inner antennae are 

 very small and composed of three joints, the basal one stout, second short 

 and narrowing distally, third about twice as long as the second, much 

 narrower, with a few short setae at the end (pi. L, fig. 8 a). The outer 

 antennae consist of seven joints. The basal one is short, the second and 

 third subequal and rather shorter than the fourth ; the fifth joint is the 

 longest, and is longer than the flagellum, which consists of two joints, the 

 first short, very slightly longer than broad, the second more than three 

 times as long as the first and followed by a minute terminal joint which 

 bears two or three short setae ; the whole antenna, but more especially the 

 distal portion, is finely hirsute, the hairs being short and delicate, much 

 more so than can be shown in the figure (pi. I., fig. 3 b). 



In describing the last segment of the abdomen, Mr. Miers says : " ter- 

 minal segment much the broadest at the base, with the sides at first con- 

 verging and then parallel." In my specimens the sides after converging 

 usually diverge slightly. 



The colour varies considerably. It is usually yellowish -brown with 

 darker patches, but some specimens are uniformly black. 



Over the whole body the integument is covered with peculiar scale-like 

 markings, each scale being usually more or less pointed at the end (pi. I, 

 fig. 3 c). 



Philongria rosea, Koch. (Bate's and Westwood's Brit. Sessile-eyed Crust., 



vol. ii., p. 460.) 



In a previous paper I have identified specimens found at Christchurch 

 and Eyreton as this species, and at the same time adduced reasons for 

 believing that it could not well have been introduced from Europe. Since 

 then I have found specimens precisely similar in the bush at Oxford, so 

 that I think there can be little doubt that it is really a native of New 

 Zealand and has not been introduced. 



