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48
sammen og udmærker sig desuden ved en noget afvigende
Fonn, idet det successivt udvides mod Enden, der gaar ud
i en temmelig stor ombøiet »ned tætte Børster besat Lap.
Saavel dette som det foregaaende Led er desuden forsynet
med et betydeligt Antal at eiendommelige, hageformigt
om-bøiede Smaabørster, der rimeligvis tjener til at fæste og
holde i Situs de ydre Æggemasser. Af de Led, der
sammensætter det terminale Parti (Fig. 1 g), er det lste størst,
skjøndt ikke meget længere end det derpaa følgende, og
overalt tæt haaret. De 4 følgende Led aftager successivt
lidt i Størrelse og er alle temmelig sammentrykte samt stærkt
indknebne ved Basis. I Inderkanten har disse Led en
regelmæssig Racl af smalt lancetforinige Torner, der ved stærk
Forstørrelse (Fig. 1 h) viser sig at være særdeles tint
saug-takkede i sit ydre Parti, medens de nærmere Basis har i
hver Kant en Del betydelig grovere tandformige Fremspring.
Endekloen er betydelig kortere end sidste Led og fint
tandet i Inderkanten.
Gangfødderne (se Fig. 1) er af forholdsvis robust
Bygning og ikke fuldt 3 Gange længere end Legemet. De er,
navnlig i sit ydre Parti, tæt haarede, hvorimod lignende
pigformige Fortsatser som hos foregaaende Slægt ganske
mangler. Af de 3 Hoftepartiet sammensættende Led er det
midterste omtrent saa langt som de 2 øvrige tilsammen og
noget kølleformigt opsvulmet i Enden. Laarleddet er
forholdsvis stort, skjøndt neppe dobbelt saa langt som
Hoftepartiet, og hos Hunnen noget opsvulmet paa jGrund af de
sig i dets Indre udviklende Æg. lste Lægled er |kortere
end Laarleddet, hvorimod 2det Lægled er adskilligt længere
og betydelig smalere. Tarsalleddet (se Fig. 1 i) er særdeles
kort, bredere end langt og af trekantet Form; paa
Ydersiden gaar det ud i en liden tilspidset Lap og har langs
den stærkt buede Inderkant en tæt Rad af Torner, der
tiltager i Længde udad. Fodleddet er kraftigt udviklet og
noget krummet, med Inderkanten tydeligt indbugtet i Midten
og ved Basis noget pladeformigt udvidet samt her bevæbnet
med en Rad af 6 eller 7 temmelig forlængede og tæt
sammentrængte Torner. Den øvrige Del af Inderkanten bærer
ogsaa en Rad af Torner, men som er meget mindre, og langs
Yderkanten og ved Spidsen er Leddet tæt haaret.
Endekloen er betydelig kortere end Fodleddet, temmelig tynd og
leformigt krummet, uden det mindste Spor af Bikløer.
Dyrets Farve er i levende Tilstand ensformig
gulhvid.
Forekomst. Af denne interessante Fonn blev 4
fuld-voxne Exemplarer indsamlede under Nordhavs Expeditionens
sidste Togt. Exemplarerne var fra 3 forskjellige Stationer,
nemlig Ståt. 290, 362, 363. Af disse er den lste beliggende
omtrent midtveis mellem Finmarken og Beeren Eiland, de
2 øvrige i Havet udenfor Spitsbergens Nordvestkyst;
Dybden fra 191 til 459 Favne.
Udbredning. Arten er utvivlsomt at betragte som
en ægte arktisk Form. Foruden i Nordhavet forekommer
taken together, and characterised, too. by a somewhat deviating
form, expanding successively, as it does, towards the extremity,
which projects in a rather large, recurved, with dense sctæ
beset lobe. Both this and the preceding joint are, moreover,
provided with a considerable number of small peculiar recurved
hamate bristles, serving probably to attach and retain in situ
the outer egg-masses. Of the joints composing the terminal
part (fig. 1 g), the lst is largest, although not much longer
than the one succeeding it, and everywhere densely hairy.
The 4 following joints diminish successively a little in size,
and are all rather compressed, as also very much constricted
at the base. On the inner edge these joints have a regular
series of slender lanceolate spines, which, under a strong
magnifier (fig 1 h), appear most finely serrated in their outer
part, whereas, nearer the base, they have on each edge a
number of considerably coarser dentiform projections. The
terminal claw is a good deal shorter than the last joint,
and finely dentated on the inner edge.
The ambulatory legs (see fig. 1) are comparatively
robust in structure and not quite 3 times as long as the body.
They are, more especially in their outer part, densely
hairy, whilst spiniform processes, similar to those in the
preceding genus, are altogether wanting. Of the 3 joints
composing the coxal region, the mesial one attains about the
length of the 2 others taken together, and is somewhat
clavately swollen at the extremity. The femoral joint is
comparatively large, although hardly twice as long as the
coxal part, and in the female somewhat swollen owing to
the eggs developing within it. The 1st tibial joint is
shorter than the femoral joint, whereas the 2nd tibial joint
is considerably longer and much narrower. The tarsal
joint (see fig. 1 i) is exceedingly short, broader than long, and
triangular in form; on the outer side it projects as a small
accuminated lobe, and exhibits along the arcuate inner edge
dense series of spines increasing in length outwards. The
propodal joint is powerfully developed and somewhat curved,
with the inner edge distinctly emarginate in the middle, and
at the base somewhat lamellarly expanded, as also armed in
that part with a series of 6 or 7 rather elongated and
densely crowded spines. The upper part of the inner edge
also bears a series of spines, but much smaller, and along
the outer edge and at the point the joint is densely hairy.
The terminal claw is much shorter than the propodal joint,
rather thin and falciform curvate, without exhibiting the
slightest trace of auxiliary claws.
The colour of the animal in the living state is a
uniform yellowish white.
Occurrence. Of this interesting form only 4 adult
examples were collected on the last cruise of the North
Atlantic Expedition. The specimens were from 3 different
Stations, viz. Stats. 290, 362, 363. The 1st of these lies
about midway between Finmark and Beeren Island, the
other 2 in the ocean off the north-west coast of Spitzbergen;
depth from 191 to 459 fathoms.
Distribution. The species must unquestionably be
regarded as a true Arctic form. Besides in the Norwegian Sea,
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