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omvendt flaskedannede Form. Dets forreste Halvpart, der
indeholder Endeafsnittet af Tarmen, er af cylindrisk Form,
medens Endepartiet er stærkt afsmalnende og til hver Side
bevæbnet med 9 smaa Torner foruden de to noget større
fra Spidsen udgaaende (se fig. 8).
De ydre Halevedhæng er kun ubetydelig længere end
det midterste og har Basaldelen eller Stammen særdeles
tynd og forlænget samt i den indre Kant forsynet med smaa
Torner. Endegrenene (se Fig. 4) er ganske korte, neppe
halvt saa lange som Stammen og indbyrdes omtrent af ens
Størrelse. Den indre er dolkformig og delt i 3 tydelige
Led. hvoraf det lste er længst. Til den indre Kant af
denne Gren er fæstet ialt 10 korte Torner, hvoraf 4
tilhører lste. 3 ethvert af de 2 følgende Led. Sidste Led
gaar ud i en stærk tornformig Spids. Den ydre Gren er
noget smalere end den indre og som sædvanlig 2-leddet med
Basalleddet ganske kort. Endeleddet lineært og i den ydre
Kant samt ved Spidsen forsynet med nogle tynde Børster.
Dyrets Farve var i levende Tilstand, navnlig paa
Forkroppen, blegt kjodrod.
Længden af det erholdte Individ, maalt fra Spidsen
af Pandehornet til Enden af det midterste Halevedhæng,
er 18""", og Arten hører altsaa til de største af Slægten.
Forekomst og Udbredning. Det beskrevne
Exemplar blev under Expeditionens sidste Togt optaget i
Bundskraben fra et Dyb af 125 Favne i Havet lige i Vest for
Isfjorden paa Spitsbergen.
Om Artens geografiske Udbredning kan selvfølgeligt
intet med Bestemthed anføres. Dog er man ifølge
Findestedets høie nordlige Brede berettiget til at antage, at den
ligesom den nærstaaende D. spinulosa Heller, er en ægte
arktisk Fonn.
slender, inverted bottle-shape fonn. Its foremost half,
containing the terminal section of the intestine, is cylindric,
whereas the terminal portion tapers abruptly, and, on
either side, is armed with 9 small spines, exclusive of
the two somewhat larger ones proceeding from the point
(see fig. 3).
The outer caudal appendages are but very little longer
than the telson, and have the basal part, or stem, exceedingly
slender and elongate, as also furnished along the inner
margin with small spines. The terminal branches (see fig. 4)
are quite short, scarcely half as long as the stem, and
well-nigh uniform in size. The inner is dagger-shaped, and divided
into 3 distinctly defined joints, of which the first is longest.
To the inner margin of this branch are attached 10 short
spines. 4 of which belong to the 1 st joint and 3 to each of the
2 succeeding ones. The last joint juts out as a strong,
spiniform point. The outer branch is a little more slender
than the inner, and, as usual, two-jointed, with the basal
articulation quite short, the terminal joint linear, and furnished
along the outer margin, as also at the point, with a
few-slender bristles.
The colour of the animal in a living state, more
especially on the anterior division of the body, was a
light-red, or pink.
The length of the specimen taken, measured from the
tip of the rostrum to the extremity of the telson, is 18""".
and the species ranks therefore among the largest of the
genus.
Occurrence and Distribution. - The specimen
described above was brought up in the dredge, on the last
cruise of the Expedition, from a depth of 125 fathoms, in
the open sea, due west of lee Sound. Spitzbergen.
As regards the geographical distribution of the species,
nothing can of course be stated with Certainty. Judging,
however, from the high northern latitude of the locality in
which the animal was found, we are warranted in regarding
it, equally with the species D. spinulosa Heller, as a true
Arctic form.
Ordo Isopoda.
Trib. 1. Chelifera.
Fain. 1. Apseudidæ.
Gen. SphjTapus, Xorman. M. S.
(G. O. Sars, Revision af Gruppen Isopoda chelifera i.
Slægtscharaeteristik. Legemet bagtil afsmalnende
med skarpt afsatte Segmenter, hos Hannen betydelig
smækrere end hos Hunnen. Hovedsegmentet stort, oventil jevnt
Ordo Isopoda.
Trib. 1. Chelifera.
lam. I. Apseudidæ.
Gen. Äpli.vi’Eipiirs, Norman. M. S.
(G. O. Sars, Revision af Gruppen Isopoda chelifera),
Generie Character. — Body tapering posteriorly, with
sharply defined segments, and much more slender in the male
than in the female. Cephalic segment large, uniformly arched
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