82 
Remarks .—This is one of the smallest known Cumacea, and may thus 
easily escape attention in an examination of the contents of the dredge. It is, 
however, an easily recognizable form, being clearly distinguished in both sexes 
from our other Cumacea. As is generally the case in this order, the sexual 
dimorphism is very pronounced, and indeed the adult male looks so different from 
the female, that it was at first regarded by the Rev. Mr. Norman as belonging 
to a distinct species, C agilis. 
Occurrence .—Though nowhere in any abundance, this form seems to occur 
along the whole south and west coast of Norway, from the Christiania Fjord to 
the Lofoten Islands. It is generally found in comparatively shallow water, on a 
sandy bottom covered with a thin layer of blackish mud, sometimes also at the 
roots of Laminarias. The adult males are very agile, and have been taken by 
English naturalists (Robertson) rather abundantly in the tow-net at night. 
Distribution .—British Isles (Norman), Heligoland (Ehrenbaum), Mediter¬ 
ranean at Messina and Spezia (the present author). 
Fam. 8. Campylaspidse. 
Characters —Body comparatively short and robust, with the anterior 
division much dilated and boldly arched above. Carapace of unusual size, more 
or less depressed in front and strongly vaulted behind. Five pedigerous segments 
exposed behind the carapace, the 2 anterior ones, however, very short, band-like. 
Caudal segments more or less depressed, the last one short, pentagonal. Integu¬ 
ments greatly indurated. Eye present, thougl rather imperfectly developed. 
Superior antennae of exactly the same structure in the two sexes; inner flagellum 
rudimentary. Inferior antennae in female imperfectly developed and without any 
setae, in male attaining the length of the body. Oral parts of a structure rather 
different from that in other Cumacea, some of them being very fully developed, 
others rather imperfect. The 2 anterior pairs of legs in female, and all but the 
last pair in male provided with exopodites. Pleopoda wanting in male. Uropoda 
with the rami comparatively short, the inner uniarticulate, the outer Inarticulate. 
No telson. 
