20 



exserted during copulation, and are used as a pair of claspers, by which the 

 female is embraced at the boundary between the last 2 pedigerous segments. 

 The hold is so firm, that I have succeeded in preserving the 2 sexes still locked 

 together (see the figure given on PI. IX). 



Occurrence. I have met with this beautiful form along the whole coast 

 of Norway, from the Christiania Fjord to Vads0, in a few fathoms' depth, on a 

 sandy bottom. In some places, for instance off the Jsederen coast and at Sorvser 

 and Vard0 in Finmark, I have taken it in great abundance and of very large 

 size. It moves rather quickly, and is able to bury itself with great ease 

 in the sand, so as to be quite hidden. 



Distribution.- British Isles (Norman), Kattegat (Meinert), Heligoland 

 (Ehrenbaum). 



2. Lamprops fuseata, G. 0. Sars. 



(PL XI.) 



Lamprops fuseata, G. 0. Sars. Om den aberrante Krebsdyrgruppe Cumacea 



og dens iiordiske Arter, p. 67. 



Specific Character. Body comparatively short and robust, with the anterior 

 division in female rather tumid, ovoid, and considerably vaulted above. Carapace 

 about the length of the exposed part of the trunk, conically tapering in front and 

 slightly keeled dorsally in its anterior part, sides perfectly smooth, pseudorostral 

 projection rather produced, acute, antero-lateral corners sub-obsolete. Tail, in- 

 cluding the telson, scarcely as long as the anterior division. Eye distinct, though 

 rather small. Inferior antennae in male unusually short, and pronouncedly prehen- 

 sile, the flagellum being divided into two sharply-defined parts, of which the proximal 

 one is thickened and armed inside with small hook-like projections. 1st pair 

 of legs comparatively more slender than in the type species, with the basal joint 

 more strongly curved; 2nd pair nearly as long as the 1st, terminal joint much 

 longer than the penultimate one; the remaining pairs comparatively more slender 

 and less richly setous than in L. fasciata. Uropoda with the inner ramus much longer 

 than the outer. Telson in female tapering considerably distally. and provided 

 with 2 pairs of short lateral spinules, apical spines 5 in number, the middle one 

 the shortest, the 2 outermost longer than the others. Telson in male less tapered 

 distally, with the 2 pairs of lateral spinules more widely apart, and the middle 

 apical spine much shorter than the other 4, which are about equal-sized and less 

 divergent than in female. Colour more or less fuscous, carapace mottled in front 

 with opaque white. Length of adult female 6 mm., that of male scarcely 

 reaching 5 mm. 



