lamellarly expanded. Urosome equalling in length about l /3 of the anterior 

 division; genital segment somewhat protuberant below, and about the length 

 of the 2 succeeding segments combined. Caudal rami scarcely longer than 

 they are broad; apical setae rather slender, the innermost but one, as usual, 

 the longest and considerably exceeding the length of the urosome. Anterior 

 antennae comparatively shorter than in S. Scotti, scarcely extending, when 

 reflexed, beyond the genital segment. Posterior antennae, oral parts and 

 natatory legs of a structure very similar to that in 5. Scotti. Last pair of legs 

 rather small, with the distal joint conical in form, and only armed with a single 

 denticle inside at some distance from the tip; outer edge with a small bristle 

 opposite the denticle. 



Male much smaller than female, with the urosome more slender and 

 5-articulate. Last pair of legs built on the same type as in the other species, 

 though exhibiting well-marked specific differences, as seen from the figure 

 here given. 



Body in both sexes highly pellucid and without any obvious pigment. 



Length of adult female 0.73 mm., of male 0.60 mm. 



Remarks. The present species, first described by Scott, is nearly allied 

 to S. Scotti G. O. Sars, but of much smaller size, and moreover well disting- 

 uished by the somewhat storter anterior antennae and by the structure of the 

 last pair of legs in both sexes. 



Occurrence. Several specimens of this form were taken in a single 

 place at Korshavn from a depth of about 15 fathoms. I have also found it 

 occasionally at Riser in about the same depth. 



Distribution. Scottish coast (Scott). 



Gen. Parastephos, G. O. Sars. 



Remarks. This genus was established in the year 1903 by the present 

 author, to include a peculiar Copepod, of which at that time only a solitary 

 male specimen was obtained. Subsequently Mr. Scott found also the female, 

 and the perplexing characters distinguishing this sex fully prove the validity 

 of the present genus. I have been fortunate enough to find a few female 

 specimens off the Norwegian coast, and I am thus enabled to confirm the 

 statements given by Scott about this sex. 



