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



The second antennae are not elongate ; the short flagellum is about three- 

 quarters the length of the last joint of the peduncle ; of the three preceding joints 

 the middle one is the shortest, each of the others being about as long as the flagellum; 

 first joint of the flagellum half as long as the second. 



The flrst segment of the peraeon has the hinder angles broadly rounded, little 

 produced ; the duplicature extends from the front angle almost to the other extremity, 

 and the lateral margin has the peculiarity of being broadest at the top, but, though 

 the groove is so extensive, the actual cleavage at the distal end is not very long. 

 The second segment has the duplicature well developed, but not externally conspicuous. 



The caudal segment at the base is more than twice as broad as the total length, 

 which is exceeded also by the slightly convex apical margin ; the basal part of the 

 segment is nearh" as long as the distal, the short sides of which are only faintly 

 divergent. 



The uropods fill the space between the caudal segment and the fifth, their outer 

 and distal margins forming a gentle, almost continuous, curve ; the inner rami do not 

 quite reach the apex of the telson ; the outer are minute, invisible from below, being 

 placed in a little dorsal pocket of the peduncle, at some distance from its apex. 



Colour dull, mottled ; the legs and parts of the pleopods rather thickly covered 

 with brown markings, brighter than those on the back. 



Length, 10 mm., breadth, 5 mm. The second specimen, a male, was rather smaller. 



Habitat. New Britain. 



The specific name is given in acknowledgment of the great assistance derived 

 from Budde-Luud's work on the terrestrial Isopoda. 



CUBARIS ZEBRICOLOR, n. sp. 



Plate LXX D. 



Body moderately convex, bordered with fine hairs, appendages extremely brittle. 

 The pi'osepistome in frontal view convex, scarcely passing the front. The eyes not 

 very prominent, with about 20 ocelli. Second antennae with flagellum three-fourths 

 as long as ultimate joint of peduncle, this joint considerably longer than any of the 

 three preceding, of which the middle one is the shortest ; first joint of flagellum 

 half as long as second. 



First segment of peraeon with the lateral edge thickened, feebly sulcate above, 

 with strongly marked duplicature below, the inner plate reaching as far back as the 

 outer, with broadly rounded apex. In the second segment the duplicature is repre- 

 sented by a short tooth high up. 



The caudal segment is not nearly twice as broad as long, the distal part a little 

 longer than the broader basal part, sides strongly incurved, and then forming strongly 

 rounded corners to the slighth- convex apical margin. 



The uropods are about equal in length and breadth, the inner rami falling a 

 good deal short of the apex of the telson, the outer minute, on the dorsal surface 

 of the peduncle adjacent to the telson just below its lateral emargination ; the apex 



