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1.-) c.
meget tynd og sammensat af 6 Led. Bisvoben er neppe
mere end halvt saa lang og 4-leddet.
2det Par Folere (Fig. 4 b) er ubetydeligt længere end
lste Par og har de 2 basale Led stærkt opsvulmede og
delvis skjulte under Hovedskjoldet. Skaftets næstsidste Led
er noget udvidet mod Enden og temmelig rigeligt forsynet
med Borster, der her ligesom overalt paa Legemet er
uci-lierede. Svøben er tynd, 8-leddet.
De 2 forreste Fodpar (Fig. 4 c) er indbyrdes
fuldkommen af samme Bygning, temmelig kraftige, med
Haanden af oval Fonn og Griberanden kort og noget skraa samt
bagtil begrændset af et tydeligt tandformigt Fremspring, ved
hvis Basis er fæstet en stærk Torn.
De 2 følgende Fodpar har 3die Led forholdsvis stort
og tæt børstebesat, de 2 sidste temmelig smaa.
5te Fodpar har som hos ile ovrige til denne Slægt
horende Arter Hofteleddet pladeformigt udvidet, de øvrige
Led succesivt afsmalnende og temmelig rigeligt borstebesatte.
6te Fodpar er næsten dobbelt saa langt, med
Hofteleddet næsten elliptiskt, de øvrige Led cylindriske med
spredte tornformige Borster; Endekloen tynd og lige.
Sidste Fodpar er igjen meget kort, men har
Hofteleddet særdeles stort, pladeformigt, med den bagre Rand
jevnt bueformigt bøiet og utydeligt saugtakket. Den øvrige
Del af Foden er neppe længere end Hofteleddet og jevnt
afsmalnende.
Sidste Par Halefødder (se Fig. 4 e) har den ydre
Gren stærkt forlænget og sylfonnigt tilspidset samt besat
med en Del simple Borster. Den indre Gren er meget
kort, neppe mere end 1/:J saa lang som den ydre.
Halevedhænget (ibid.) er af atlang Fonn og ved et
smalt Indsnit kløftet lige til Roden i 2 symmetriske Halvdele.
Farven er hvidgraa, noget gjennemsigtig.
Længden overstiger neppe 51j2m".
Forekomst og Udbredning. Nogle faa Exemplarer
af . denne distincte Art toges under Expeditionens 2det Togt
ved Sydkysten af Jan Mayen paa 15—20 Favnes Dyb.
Samme Art har jeg ogsaa taget ved vor Kyst, nemlig i
Yarangerfjorden. Den er vistnok at betragte som en arktisk
Form.
non-ciliated bristles. The flagellum is somewhat shorter
than the peduncle, very slender, and composed of 6
articulations. The secondary flagellum is scarcely more than
half as long, and has 4 articulations.
The 2nd pair of antennæ (fig. 4 b) are but very
little longer than the 1st pair, and have the 2 basal joints
greatly swollen, and in part covered by the cephalic shield.
The penultimate joint of the peduncle is somewhat dilated
towards the extremity, and rather abundantly provided with
bristles, which here, as elsewhere on the body, are
non-ciliated. The flagellum is slender, and composed of 8
articulations.
The 2 anterior pairs of legs (fig. 4 c) are perfectly
uniform in structure, rather powerful, with the hand of an
oval form and the palmar margin short and somewhat
oblique, as also posteriorly defined by a well-marked dentiform
projection, at the base of which occurs a strong spine.
The 2 succeeding pairs of legs have the 3rd
articulation comparatively large and densely beset with bristles,
the 2 last rather small.
The 5th pair of legs have, as in the other species
belonging to this genus, the basal joint lamelliform-dilated,
tbe remaining articulations successively tapering and rather
abundantly furnished with bristles.
The 6th pair of legs are well-nigh double the length,
with the basal joint almost elliptic in form, the remaining
articulations cylindric, with scattered spiniform bristles.
Terminal claw slender and straight.
The last pair of legs, again, are very short, but have
the basal joint exceedingly large, lamelliform, with the
posterior margin uniformly arched and indistinctly serrate.
The remaining portion of tbe leg is scarcely at all longer
than the basal joint, and tapers gradually.
The last pair of caudal stylets (see fig. 4 e) have
the outer branch very considerably elongate and
awlshaped-acute, as also beset with a number of simple bristles. Tbe
inner branch is very short, scarcely more than one-third
as long as the outer.
The telson (ibid.) is oblong in form, and, by a narrow
incision, cleft to the base into 2 symmetrical halves.
Colour a whitish-grey, semi-translucent.
Length scarcely exceeding 5’
Occurrence and Distribution. — A few individuals
of this distinct species were obtained on the 2nd cruise of
the Expedition, off the south-east coast of Jan Mayen, from
a depth of 15—20 fathoms. The same species I have
likewise taken on the Norwegian coast, viz. in the Varanger
Fjord. It may no doubt be regarded as an Arctic form.
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