133 



rix. This is a very distinct species, easily distinguishable in 

 both sexes from the other species here described both by its slender form of 

 body, and by the structure of the inferior antennae and the 3 posterior pairs 

 of pereiopoda, and finally by the imperfectly developed visual organs. 



Occurrence. Only two specimens, male and female, have hitherto 

 come under my notice. They were both taken, a long time ago, oft' the west 

 coast of Norway, from rather deep water, the exact locality not stated. 



8. Bathyporeia pilosa, Lindstrom. 



(PI. 46, fig. 2) 

 Bathyporeia pilosa, Lindstrom, Ofvers. af Vet. Akad. Forhandl. 1855, p. 59. 



Form of body about as in B. pelagica, though perhaps a little more 

 robust. Cephalon obtusely truncated in front, Coxal plates comparatively 

 small, scarcely as deep as the body, 1st pair obtusely pointed at the tip, 

 the 2 succeeding ones without any distinct dentiform projection. Last pair 

 of epimeral plates of metasome obtusely rounded at the lateral corners. First 

 segment of urosome but slightly impressed dorsally and without any trace of 

 spines, having only a pair of very small anteriorly curved bristles. Eyes in 

 female small, rounded oval in form, in male somewhat larger, pigment blackish. 

 Superior antennae with the 1st joint of the peduncle scarcely twice the length 

 of the other 2 combined; liagellum in female composed of 6, in male of 12 

 articulations; accessory appendage with the basal joint much coarser than in 7>. 

 pelaciga, terminal joint slightly exceeding in length YS of the former. Inferior 

 antennae in female but little longer than the superior, nagellum shorter than 

 the 2 outer peduncular joints combined and 8-articulate ; those of male nearly 

 attaining the length of the body. Anterior gnathopoda with the propodos 

 about as long as the carpus, and oval in form. Antepenultimate pair of 

 pereiopoda with the meral joint considerably expanded and densely fringed 

 with ciliated setse, the 2 outer joints comparatively short, and combined by 

 far not attaining the length of the meral one. The 2 posterior pairs of pereio- 

 poda much shorter and coarser in structure than in any of the other species. 

 Last pair of uropoda with the basal joint of the outer ramus rather expanded, 

 terminal joint comparatively small, scarcely exceeding in length Y* <>*' the 

 basal. Lobes of telson shorter than in the preceding species, each with (i api- 

 cal and 3 lateral spines. Colour not stated. Length of adult female scarcely 

 exceeding 5 mm. 



Remarks. - - This species, the first one described, somewhat resembles 

 in its general habitus and size B. iteluyica Sp. Bate, with which it has also 

 been confounded by several authors. On closer examination it is, however, 



