25 



than the 2 succeeding pairs, basal joint of the 3 posterior pairs rather tumid. 

 Uropoda equalling in length about y 3 of the meta.sniiie, both rami distinctly bi- 

 articulate and somewhat unequal, the outer one being shorter and narrower than 

 the inner. Length 1.65 mm. 



Remarks. - - This form was discovered during the Norwegian North Atlantic 

 Expedition, and has been described and figured in detail by the present author in 

 the Report of the Crustacea from that Expedition. It is easily distinguished from 

 any of the previously described species by its comparatively short and thick body, 

 the acutely produced frontal margin, and the comparatively long bristles issuing 

 from the tip at' the superior antennae. 



Occurrence. - - A few female specimens of this form have been taken by 

 me at Kvalo on the Nordland coast, from depths of 60 100 fathoms. 



Distribution. Stat. 290 of the Norwegian North Atlantic Expedition, 

 lying W. of Finmark. 



9. Typhlotanais penieillatus, G. o. Sars. 



(PI. XI, fig. 3.) 

 Typhlotanais penicillatus, (I. O. Sars, 1. c. p. 39. 



Specific Characters. - 9- Body a little more slender than in T. cornutus, 

 being almost 5 times as long as it is broad. (Jephalosome not nearly so broad 

 as in the said species, and having the frontal edge less strongly produced in the 

 middle. First and last segment of mesosome of about same size and somewhat 

 shorter than the others, which are separated by rather conspicuous constrictions. 

 Metasome of almost uniform breadth throughout. Superior antennae extremely 

 slender and narrow, considerably exceeding in length the cephalosome, terminal 

 joint linear and tipped by slender bristles, one of which is of quite an unusual 

 length. Chelipeds slender and feeble, hand very narrow, sublinear, exceeding in 

 length the carpus, fingers nearly as long as the palm. Pereiopoda resembling in 

 structure those in T. cornutus, basal joint of the 3 posterior pairs, however, less 

 tumid. Uropoda with the inner ramus distinctly Inarticulate, the outer one uni- 

 articulate and somewhat shorter. Length 1.40 mm. 



Remarks. - - This species is nearly allied to T. cornutus, but is of somewhat 

 more slender form, and moreover easily distinguished by the much feebler struc- 

 ture of the chelipeds, and by the extremely slender superior antennae, with their 

 long terminal pencils of bristles. Also the uropoda differ essentially in the fact 



of the outer ramus being uniarticulate. 



4 Crustacea. 



