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and scarcely exceeding it in length. Cephalon rather large, with the frontal part
narrowly truncated. First segment of mesosome scarcely
smaller than the suc-
ceeding ones, and produced on each side to an acute, anteriorly-pointing lappet;
lateral parts of the 3 succeeding segments evenly rounded ; 5th segment with the
antero-lateral corners not produced. Caudal segment oblong oval in form, with
a distinct notch on each side near the tip. Superior antennae 5-articulate. In-
ferior antennae about half the length of the body, flagellum not attaining the
length of the 2 outer peduncular joints combined, and composed of 8 articulations.
1st pair of legs very strongly built, carpus large and broad, with 4 slender spines
inside, propodos about the same length, but narrower, and oblong oval in form. The
3 succeeding pairs of legs narrower than in D. linear e, and less densely clothed
with spines ; the 3 posterior pairs likewise considerably narrower than in the type
species, though otherwise of a very similar structure. Uropoda scarcely more
than half the length of the caudal segment, distal joint about 3 times as long
as the proximal one. Colour whitish, semi-pellucid. Length
scarcely
2 mm.
of adult female
Bernards. The present species, of which only female specimens have
hitherto come under my notice, is easily distinguishable from I), lineare by the
less fully developed posterior section of the mesosome, the form of the 1st seg-
ment and of the caudal segment, and the very strongly built 1st pair of legs.
Occurrence. I have met with this form occasionally in 2 widely distant
localities of the Norwegian coast, viz., in the inner part of the Christiania Fjord
and at Aalesund, the depth ranging from 30 to 50 fathoms. Out of Norway,
it has not yet been recorded.
Gen. 5. Ellgerda, Mi-inert, 1890.
Syii : Desmosoma,
G-. 0. Savs (part).
Generic Characters. Form of body much as in Desmosoma ; 1st segment
of mesosome, however, very small, and not produced laterally in any of the sexes.
Antenna? and oral parts of almost exactly the same structure as in the said genus.
1st pair of legs in both sexes very slender and feeble, with the outer joints ex-
tremely narrow, almost filiform ; the other legs
Desmosoma. Uropoda distinctly biramous,
of a similar structure to those in
outer ramus smaller than the inner.
Remarks. This genus was established in the year 1890 by Prof. Meinert,
to include a supposed new Isopod from Kattegat, which, however, has turned out