648 ON CRUSTACEA BROUGHT BY DR WILLEY FROM THE SOUTH SEAS. 



Philoscia lifuensis, n. sp. 

 Plate LXIX B. 



The surface scabrous with minute, sparsely planted hairs, some of them occurring 

 between the lenses of the eyes. Bent part of the occiput forming a dark border to 

 the head in a ventral view. First three segments of the peraeon with the hind margin 

 very slightly sinuous, last segment the longest, none with acute angles, all pale in 

 front, and darkly marbled behind. Pleon abruptly narrowed, short, the caudal segment 

 much broader than long, very obtuse at the apex. 



Eyes with several ocelli, probably about sixteen. Second antennae missing. 



First maxillae with the outer plate rather narrow, apically bent, the apex carr}'ing 

 eight spines, the outermost the largest, several bifid, the setulose fringe of the concave 

 distal part of the outer margin having its little setules much longer at the extre- 

 mities than in the middle portion. The maxillipeds have a minutely spinulose surface. 



Uropods. Peduncle reaching be3"ond the telson, channelled on the outer edge, in- 

 termediate in length between the two lanceolate rami, which are attached on a level, 

 the slender inner one three-fifths of the length of the more robust outer one, both 

 spinose. Rami and peduncle alike are microscopically fi'inged at the inner margin. 



Colour of dark portions blackish or purplish grey. 



Length, 42 mm., breadth, l"^ mm. Philoscia lueberi, Dollfus, 1898, from Sumatra, is 

 5'5 by 24 mm., has no dark band on the middle segment of the peraeon, the dark bands 

 on the first three segments in the front instead of at the back, and, judging by the 

 figure, has a long pleon, not a short one. In other respects it shows agreement with 

 the form here described. 



Habitat. Lifu, Loyalty Islands. Specific name from place of capture. 



Paraphiloscia, n. gen. 



In general agreement with Plnloscia, but distinguished by the spinose second 

 antennae, first maxillae with only three apical spines on the outer plate, and the 

 uropods with laminar inner ramus, and each ramus terminating in a pencil of setae. 



The spinose somewhat geniculate antennae and the long setae at the tips of the 

 uropods recall the features of Trichoniscus, but connexion with that genus is excluded 

 by the mouth-organs, the eyes with numerous ocelli and the telson not truncate. 



Paraphiloscia stenosoma, n. sp. 

 Plate LXIX c. 



Head with deflexed front. Peraeon narrow, nearly parallel-sided, the earlier seg- 

 ments a little shorter and broader than the hinder ones. Pleon abruptly narrower, 

 slightly tapering ; anterior margin of the first segment seen through the overlapping 

 hind margin of the seventh peraeon segment gives the appearance of a segment too 

 many. Caudal segment twice as broad as long, subacutely triangular. 



Eyes with about twenty-one ocelli. First antennae minute, first joint subequal to the 



