128 



than 13 well-defined joints, a short joint being divided off from the elongated 2nd 

 joint both at the base and at the end, and moreover each of the 2 joints pre- 

 ceding the terminal one being distinctly subdivided; terminal joint about the 

 length of these 4 joints combined. Posterior antennae a little more slender 

 than in B. papillatus. but otherwise of a very similar structure. Siphon rather 

 produced, extending considerably beyond the limits of the cephalic segment. 

 Mandibles very slender and distinctly denticulated at the tip. Maxillae with the 

 lobes narrow and rather unequal in length; apical seta of the inner one much 

 produced, those of the outer rather slender. Anterior maxillipeds with the dactylus 

 much more slender than in B. papillatus, with only a single small thumb-like 

 process rather far from the apex, secondary spine well marked. Natatory legs 

 with the rami comparatively less slender than in that species; inner ramus of 

 4th pair more fully developed, exceeding in length the first 2 joints of the outer 

 one combined. Free joint of last pair of legs a little larger than in B. papillatus. 



Male considerably smaller than female, and having the anterior division 

 less expanded. Anterior antenna?, as in female, composed of 13 joints, 6th and 

 7th joints very short and less sharply defined, loth joint conspicuously dilated 

 and armed anteriorly with 2 slender spines, movable terminal part distinctly 

 biarticulate. Inner ramus of 4th pair of legs comparatively longer than in female, 

 terminal joint produced at the outer distal corner to an outward-curving denti- 

 form projection, outer apical seta, as also that of the outer edge replaced by a 

 short club like spine. 



Body in female of a dark yellowish grey colour, and ornamented on the 

 dorsal face with a reddish branching pigment. 



Length of adult female amounting to 2.40 mm., of male to 1.95 mm. 



Remarks. This form is closely allied to B, papillatus, but of much larger 

 size, and moreover differs conspicuously in the shape of the epimeral lappets of 

 the trunk-segments, as also in some of the structural details, as indicated in the 

 above diagnosis. 



Occurrence. Solitary specimens of this large species have been taken 

 at Aalesund, west coast of Norway, and in the Trondhjem Fjord, at R0dbjerget, 

 in both localities from considerable depths. 



72. Brady pontius caudatus, G. 0. Sars, n. sp. 



(PL LXXVI). 



Specific Characters. Female. Body comparatively more slender than in 

 the other species, with the anterior division moderately expanded. Cephalic 



