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85
Forekomst og Udbredning. At’ den her omhandlede
meget distincte Art blev under Expeditionen sidste Togt
en Del Exemplarer optagne fra et Dyb af 190 Favne
omtrent midt imellem Beeren Eiland og Finmarken (Ståt. 290).
Ved nylig at gjennemgaa det paa mine forskjellige Keiser
indsamlede Materiale af Tanaider, tinder jeg ogsaa et Par
Exemplarer af samme Art fra vor nordlige Kyst
(Hammerfest).
Dens for Tiden bekjendte Udbredning synes saaledes
at indskrænke sig til Havet omkring Norges nordlige Kyster
og Beeren Eiland.
Trib. 2. Flabellifera.
Bemærkninger. Under denne Tribus henfører jeg
alle de Isopoder, hos hvem de bagerste Par Buglemmer
sammen med sidste Segment danner en mere eller mindre
tydelig Halevifte, Jeg har fundet, at disse Former ogsaa
i tiere andre Henseender frembyder Overensstemmelser
indbyrdes, og derfor fortjener at sammenfattes som en særegen
større Afdeling af Isopoderne. Følgende Familier horer
herhen: Anthuridæ, Anceidæ. Cyniothoidæ (inch Ægidæ &
Cirolanidæ), Serolidæ, Sphæromidæ (inch Limnoriidæ).
Fant. Anceidæ.
Oen. Anceiis, Kisso, 1816.
Grustacés de Nice.
17. Anceus stygius. G. O. Sars.
(PI VIII, Fig. 1—22).
Anceus stygius, G. O. Sars, Prodromus desciptionis Crust, etc.. No. fi.’>.
Artscharacteristik. ♂ Legemet af atlang Form. 3
Gauge længere end bredt, fortil noget afsmalnende, med
særdeles haarde, piggede Integumenter. Hovedet mindre
end sædvanligt, næsten pentagonalt, til hver Side forsynet
med en i Midten afbrudt tandet Kjøl. De frie
Forkrops-segmenter med grovt tandede Epimerer; de bagre
Side-hjørner paa de 3 sidste udtrukne til skjævt udadrettede
smale tandede Fortsatser; næstsidste Segment størst, oventil
Occurrence and Distribution. — Of the very
distinctly characterized species described above, a number of
specimens were taken, on the last cruise of the Expedition,
at a depth of 190 fathoms, about midway between Beeren
Eiland and Finmark (Ståt. 290). Lately, on reviewing the
material comprising the Tanaid group collected on my various
exploratory excursions. 1 lighted on a few specimens of the
species from the north coast of the country (Hammerfest).
The distribution of this form is therefore, apparently,
at present confined to the sea off the northern shores of
Norway and that surrounding Beeren Eiland.
Trib. 2. Flabellifera.
Remarks. — To this tribe I refer all Isopods in
which the posterior pair of abdominal limbs, along with the
last segment, constitute a more or less distinct caudal fan.
I have found that the said forms also present agreement
in several other respects, and hence afford warrantable
grounds for classing them in a special, comprehensive section
of the Isopods. The following families belong to this
section: — The Anthuridæ, Anceidæ, Cyniothoidæ (including
the Ægidæ and the Cirolanidæ), Serolidæ, Sphæromidæ
(including the Limnoriidæ).
Fain. Anceidæ.
Gen. Anceus, Risso, 1816.
Crustacés de Nice.
17. Anceus stygius, G. O. Sars.
(Pl. VIII, figs. 1—22).
Anceus stygius. (J O. Sars. Prodromus descriptionis Crust, etc.. No.
Specific Character. — ♂ Body oblong in form. 3
times longer than broad, forward somewhat tapering, with
exceedingly hard, spiky integuments. Cephalic segment
smaller than usual, almost pentagonal, furnished on either
side with a dentate keel, disrupted in the middle. Free
segments of anterior division with coarsely dentate epimera;
posterior lateral corners on last 3 drawn out to oblique,
exteriorly directed, slender, toothed projections; penultimate
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