38 



Anterior antennae composed of 7 well defined joints, the 1st of which is much 

 the largest, and exhibiting a very conspicuous patch of a dark pigment. 

 Posterior antennae with the outer ramus comparatively small, scarcely exceeding 

 in length the 1st joint of the inner, though composed of 3 well defined joints. 

 Oral parts somewhat more fully developed than in most other species of the 

 present genus. 1st pair of natatory legs with the spine attached outside the 

 2nd basal joint remarkably strong and quite smooth, inner ramus of this pair 

 considerably larger than the outer. . Last pair of legs of moderate size; distal 

 joint somewhat spatulate in form, with the terminal lobes well defined and 

 nearly equal, inner edge of the joint distinctly ciliated; marginal setae moderately 

 slender and exhibiting the usual relation in length ; appendicular bristle attached 

 about in the middle of the joint and accompanied inside by 4 slender spinules; 

 inner expansion of proximal joint comparatively short, not extending to the 

 middle of the distal joint, and exhibiting at the base a transverse row of small 

 spinules, inner edge distincly ciliated, apical setae rather unequal, the outer one 

 scarcely exceeding half the length of the inner. Ovisac comparatively small. 



Colour of preserved specimens dark corneous. 



Length of adult female 0.55 mm. 



Remarks. The present species is easily recognised from those described 

 in the preceding pages, and is especially distinguished by the dark corneous 

 and glossy integuments and by the very conspicuous dark pigmentary patch 

 on the base of the anterior antennae. In the latter respect it agrees with 

 P. minor of Scott, which however otherwise is rather different. 



Occurrence. Two female specimens of this handsome species were 

 picked up from a sample taken at Riser from a depth of about 40 fathoms. 



29. Pseudobradya exilis, G. O. Sars, n. sp. 



(PI. XXIV, fig. 2). 



Specific Characters. Female. Body exceedingly slender and narrow, 

 with the anterior division scarcely at all dilated in the middle. Cephalic seg- 

 ment exceeding in length the exposed part of the trunk and rapidly tapered 

 in front; rostral plate strongly prominent and acuminate at the end. Urosome 

 slightly exceeding half the length of the anterior division and considerably 

 tapered behind; genital segment fully as long as the 2 succeeding segments 

 combined; anal segment very small and scarcely incised behind in the middle. 

 Caudal rami short, about as long as they are broad, and rather approximate; 

 apical setae very slender. Anterior antennae comparatively small, 6-articulate. 



