right antenna of male less dilated in the middle, antepenultimate 

 joint produced to a spiniform process, as in the preceding species. 

 Last pair of legs in female with inner ramus very short, not 

 reaching beyond the middle of the 1st joint of outer ramus, apex 

 acuminate without spines; claw-like expansion of 2nd joint of 

 outer ramus short and broad, not attaining the length of 

 the preceding joint, terminal joint extremely small and rudi- 

 mentary, knob-shaped with but a single apical spine. Eight 

 leg of last pair in male rather slender, inner ramus broad, 

 lamelliform, reaching beyond 1st joint of outer ramus, and having 

 the inner edge serrulate, 2nd joint of outer ramus narrow oblong, 

 spine of outer edge close to the apex, terminal claw evenly 

 curved. Left leg with inner ramus simple conic, outer ramus 

 without any terminal lamella. Body very pellucid and almost 

 colourless. Length of adult female 1,50 mm. 



Remarks. — This species, which I regard as new, would 

 seem to be nearest related to the northern form, I), gracilis, G. 

 0. Sars. It is however well distinguished by the form of the 

 terminal lobes of the last pedigerous segment in the female, as 

 also by the structure in both sexes of the last pair of legs, 

 finally by the structure of the right anterior antenna of the 

 male. 



Description of the female. — The length of the adult oviger- 

 ous- female is l'/ 2 mm, and hence the present species is rather 

 smaller than the preceding. 



The form of the body (see PI. VIII, figs 5, 6,) is much 

 more slender and rather resembles that of the northern species, 

 & gracilis G. 0. Sars. Seen from above (fig. 6) the anterior 

 division of the body exhibits a rather narrow oblong, or almost 

 fusiform shape, the greatest width not exceeding the third 

 Part of the length. As with the preceding species the foremost 

 P ai * of this division is much more tapered than the posterior 

 and terminates with a narrowly rounded front. The lateral 

 il! S „! f the laSt se ^ ment ( see fi g- 10) are relatively smaller and 

 i in that species and of a rounded form, ex- 

 acute projections, both pointing outwards. Seen 



