63_ 



5 segments besides the caudal rami. Last pair of legs very massive, both legs 

 of about equal length, but very dissimilar in form, penultimate joint of right leg 

 rather elongated and somewhat lamellar in form, gradually tapering distally, 

 terminal joint of same leg rather irregular in shape, with several obtuse, digiti- 

 form processes; penultimate joint of left leg very large and tumid, with a strong 

 spiniform process inside at the base, and a row of delicate spinules along the 

 inner face, terminal joint carrying at the tip a dense fascicle of lanceolate, leaf- 

 like appendages. 



Colour. Body in both sexes very pellucid and ornamented with a beautiful 

 rosy pigment. 



Length of adult female somewhat exceeding 1 mm., of male about 

 the same. 



Remarks. This form may easily be recognized from any of the other 

 species by its unusually short and robust form, as also by the lamellarly expanded 

 lateral parts of the last segment of the metasome in the female, and the structure 

 of the last pair of legs in both sexes. It is also of a larger size than any of 

 the other known species. 



Occurrence. I have met with this form not unfrequently at Bodo and 

 Hammerfest, Finmark, in depths of about 30 fathoms, muddy bottom. I have also 

 come across it, though only occasionally, off the west coast of Norway (Chri- 

 stiansund). 



26. Stephos Seotti, G. 0. Sars, n. sp. 



(PI. XLIII). 

 Syn : Stephos gyrans, Scott (not Giesbrecht). 



Specific Characters. Female. Body comparatively less robust than in the 

 preceding species, with the anterior division, seen dors-ally, regularly elliptical in 

 form, greatest width scarcely exceeding half the length, both extremities almost 

 equally tapered; seen laterally, considerably vaulted above, with the dorsal margin 

 strongly curved in front. Lateral parts of last segment of metasome perfectly 

 symmetrical, not lamellarly expanded. Urosome exceeding in length a / 3 of the 

 anterior division, genital segment symmetrical, without any prominences or pro- 

 cesses. Caudal rami somewhat longer than they are broad, apical setse rather 

 slender. Anterior antennae, when reflexed, reaching about to the end of the 2nd 

 caudal segment; posterior antennse with the outer ramus almost twice as long as 

 the inner. Last pair of legs with the terminal joint slightly flexuous, without 

 any spinule at the base, but armed outside the distal part with about 10 coarse 

 denticles. 



