210 



occurring somewhat behind the middle. Cephalic segment longer than the 4 

 succeeding segments combined and slightly narrowed in front. Tail somewhat 

 exceeding half the length of the anterior division; genital segment only slightly 

 dilated in its anterior part, and about the length of the 3 succeeding segments 

 combined. Caudal rami moderately produced and rather narrow, being scar- 

 cely at all divergent; seta of outer edge attached about in the middle; apical 

 setae normally developed. Anterior antennae slender and elongated, exceeding 

 in length the cephalic segment, and composed of 19 well-defined joints, 1st, 

 2nd, 4th, and 7th the largest, the other joints very small. Posterior antennae 

 with the terminal joint much shorter than the antepenultimate one. Natatory 

 legs comparatively short and stout, with the spines of the outer ramus unusu- 

 ally strong, dagger-like. Last pair of legs biarticulate, proximal joint rather 

 broad, being angularly produced outside, distal joint considerably longer, but 

 much narrower, oblong in form, and armed with 3 very strong dagger-like 

 spines, 1 apical and 2 lateral ones. 



Colour not yet ascertained. 



Length of adult female 0.80 mm. 



Male unknown. 



Remarks. This form, which has briefly been mentioned on page 11, 

 was observed many years ago by the present author, and was at that time 

 subjected to a careful anatomical examination; but both the specimens and 

 the dissections have unfortunately been lost, so that I have had no opportunity 

 of renewing my investigation. The figures given on the accompanying plate, 

 which are copied from my earlier drawings, will however at once show it to 

 be a very distinct species. 



Occurrence. The specimens of this form observed were taken off the 

 Lofoten islands, at Skraaven, from a depth of about 12 fathoms, sandy bottom. 

 Only a few female specimens were obtained, none of them carrying ovisacs. 



Cyclopina pygmaea, G. O. Sars, n. sp. 



(PI. CXV, fig. 2). 



Specific Characters. Female. Body resembling in shape that in C. 

 gracilis, though comparatively more slender, with the anterior division oblong 

 oval in outline, greatest width only slightly exceeding half the length and 

 occurring about in the middle. Tail rather narrow, with the genital segment 

 scarcely longer than the 2 succeeding segments combined. Caudal rami con- 

 siderably produced, exceeding in lenght the last 2 segments combined, and 



