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 Vadso, in a few fathoms’ depth, on a 
sandy bottom. In some places, for instance off the Jsederen coast and at Sorvser 
and Vardo 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. 
(PI. XI.) 
Lamprops fuseata, G. O. Sars. Om den abevrante Krebsdyrgruppe Cumacea 
og dens nordiske 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. 
