35 



Urosome exceeding somewhat in length 3 /4 of the anterior division and gradually 

 tapered behind; genital segment much larger than the succeeding one; anal seg- 

 ment about half the length of the preceding one and slightly indeed behind in the 

 middle. Caudal rami a little longer than they are broad and not at all diver- 

 gent; apical setae of moderate length. Anterior antennae remarkably short and 

 stout, 5-artieulate, with the 2nd joint considerably dilated and divided anteri- 

 orly into 2 sharply-defined setiferous lobes. Posterior antennae with the outer 

 ramus rather small, not nearly attaining the length of the 1st joint of the 

 inner, and biarticulate. Oral parts normal. Natatory legs moderately slender, 

 inner ramus in 1st pair considerably longer than the outer, in the remaining 

 pairs of about same length. Last pair of legs well developed, and somewhat 

 resembling in structure those in P. leptognatha, the distal joint being oval in 

 form, with the terminal lobes short and rather unequal, the outermost one 

 placed far in front of the other two, marginal setae rather slender, the middle 

 one the longest; appendieular bristle attached close to the base of the joint 

 and accompanied by a transverse row of small spinules; inner expansion of 

 proximal joint extending somewhat beyond the middle of the distal joint, apical 

 setae very unequal, the outer one being scarcely half as long as the inner. 



Male, as usual, smaller than female and of still more slender form. 

 Anterior antennae very distinctly hinged and composed of 6 well defined joints, 

 the 4th of which is considerably tumefied and provided outside, at some 

 distance from the base, with a large sausage-shaped aesthetask. Last pair of 

 legs, as usual, much smaller than in female. 



Colour of the living animal not yet ascertained. 



Length of adult female 0.74 mm. 



Remarks. ^The above-described species is easily recognised by the 

 slender subfusiform shape of the body in both sexes, and the unusually short 

 and stout anterior antennae. Some differences from the preceding species are 

 also found in the other structural details, as pointed out in the above diagnosis. 



Occurrence. Solitary specimens of this elegant species have been taken 

 in 3 different places on the southern coast of Norway, viz., at Riser, Flekkere 

 and Korshavn. It occurred in depths ranging from 20 to 60 fathoms. 



26. Pseudobradya tenella, G. O. Sars, n. sp. 



(Pi.. XXIII, fig. 1). 



Specific Characters. Female. Body comparatively slender and narrow, 

 subfusiform in shape, with rather thin and pellucid integuments. Cephalic 

 segment considerably longer than the exposed part of the trunk and abruptly 



