Id 
figures has been given by the present author in bis account of the Mediterranean 
Cumacea, but it was at that time regarded as only a variety of the type species. 
Now, however, I am inclined to regard this form as specifically distinct from Good- 
sir’s species, as it slightly differs, not only in the armature of the carapace, but 
also in some other structural details. 
Occurrence Of this form, a single adult male was found by the present 
author in the year 1875 at Flekkere, near Christiansand. This specimen, which 
is figured in PI. V, is the only proof of the occurrence of the present form off 
the Norwegian coast. The figures of the female here given are from British speci¬ 
mens kindly sent to me by the late David Robertson. 
Distribution . — British Isles (Goodsir), coast of France (Bonnier), Kattegat 
(Meinert). 
Gen. 3. CyelaspiS, G. 0. Sars, 18(14. 
Generic Characters. —Body slender and elongated, with , the anterior divi¬ 
sion rather tumid in front, but abruptly tapered behind. Integuments hard, cal¬ 
careous. Carapace very large and deep, being strongly vaulted dorsally, pseu¬ 
do-rostral projection small or obsolete. 1st pedigerous segment wholly concealed 
both dorsally and laterally. Tail exceeding in length the anterior division, last 
segment rather elongated and obtusely produced behind. Eye present or want¬ 
ing. Superior antenna; with the flagella very small, the outer one Inarticulate 
and tipped with 2 very slender sensory filaments, the inner rudimentary, knob-like 
Inferior antennae in female with only 2 plumose set® of the proximal joint; those 
in male shorter than the body. Posterior lip with the lateral lobes incurved at 
the tip, and armed with lamellar teeth. 3rd pair of maxillipeds with the basal 
joint very large, and produced at the end outside to a broad setiferous lobe. 
1st pair of legs slender, but having the proximal part of the basal joint lamel- 
larly expanded. The remaining pairs very small and but sparingly setous; 2nd 
pair with the full number of joints. Uropoda comparatively short, with both rami 
lanceolate, the outer biarticulate, the inner uniarticulate. 
Remarks. —This genus was established by the present author in the. year 
1864, to include a peculiar deep-water Cumac.ean found off the Norwegian coast. 
3 other species, undoubtedly belonging to the same genus, were added by him 
