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spinules. Eyes very large, nearly quadrangular, almost meeting above at one of
their angles. Superior antennae with the 1st joint of the peduncle rather short
and concealed by the produced front, flagellum shorter than the peduncle and
6-articulate. Inferior antennae more than twice as long as the superior, flagellum
considerably exceeding the peduncle in length. Anterior pairs of legs rather
strong, meral joint armed inside with 3 blunt spines, propodos rather broad,
with 3 strong spines inside, dactylus large falciform. Uropoda with both plates
oblong, densely ciliated, and partly edged with short spinules, the inner one a
little broader than the outer, and rounded at the tip. Colour light reddish brown,
caudal fan sub-hyaline. Length of adult animal reaching to 24 mm.
Remarks, This form was described under the above name by Leach as
early as in the year 1815. Subsequently it was recorded from the Norwegian
coast by Prof. Lilljeborg under another name, viz.,
Aclierusia rotunclicmida. It
looks, on the whole, very like an ^Ega, but may be at once distinguished by the
more depressed, and less compact body, the large angular eyes, and the evenly
rounded terminal segment of the metasome. Not yet sexually developed specimens
are more frequently met with, and in these the body appears much more slender
than in adult specimens, in which it is considerably shortened by the closer
crowding together of the segments.
Occurrence. The species occurs not infrequently along the whole south
and west coasts of Norway, at least to the Trondhjem Fjord, and is not infrequently
taken up in the dredge, though it is more generally found clinging to the skin
of fishes of various kinds, for instance the conrmon cod, the haddock, the ling etc.
Distribution. British Isles (Leach), Oresund and Kattegat (Meinert), the
Faroe Islands (Schodte & Meinert).
Gen. 3. SySCemiS, Harger, 1878.
: Syn Harponyx,
G. O. Sars.
Rocinela, Bovallius (not Leach).
Generic. Characters. Body depressed, with the cephalon comparatively
small, and the metasome narrowing abruptly to a much smaller width than the
mesosome; terminal segment very large. Eyes wanting. Antennae nearly as in
Rocinela. Mandibles with the cutting edge simple, acuminate, palp of moderate
length. Maxillipeds with the terminal part bi-articulate. Anterior pairs of legs
with the propodos smooth, cylindric, not expanded, dactylus extremely strong,