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230
dybest og afrundet i Bunden. Fortil danner Haanden lige
over den kraftige Endeklo et spidst Fremspring.
Gjellebladene, Brystpøsen og de 3 bagre Fodpar viser
intet udmærkende i sin Bygning.
Af de 2 Par Bagkropslemmer er det forreste {se Fig.
5 c) tydeligt 2-leddet og betydelig større end det bagerste,
der kun danner et Par simple, i Kanterne tint cilierede
koniske Vedbæng.
Hannen (Fig. 5 x) er betydelig større end Hunnen
og af noget mere langstrakt Kropsform. De 2 forreste
Segmenter viser dog ikke noget saadant anomalt Forhold
som hos Hannerne af foregaaende Slægt. Hvad Legemets
Bevæbning angaar, saa er den noget ulig samme hos Hun.
nen, idet de dorsale Pigge er betydelig mindre fremtrædende,
hvorimod hele Legemets Overflade, ligesom ogsaa en stor
Del af Lemmerne, er ru af talrige smaa tilspidsede Knuder.
lste Par Folere er stærkere forlængede end hos
Hunnen og navnlig Skaftet kraftigere udviklet, medens Svøben
synes at være forholdsvis kortere.
2det Fodpar skiller sig i sin Bygning fra samme hos
Hunnen alene derved, at Basalleddet er noget stærkere
forlænget, medens Haanden viser nøiagtig samme Form.
Hele dette Fodpar er, ligesom lste Par Føleres Skaft, tæt
besat med de ovenomtalte Smaaknuder.
Bagkroppen med dens Vedhæng (Fig. 5 c) skiller sig
heller ikke i nogen væsentlig Grad fra samme hos Hunnen.
Foran den udgaar fra sidste Forkropssegment de 2 ydre
Kjønsvedhæng, der er af et lignende Udseende som hos
Hannen af Caprella spinosissima.
Legemet er hos begge Kjon temmelig gjennemsigtigt,
hvidagtigt, med uregelmæssige mørkere Pigmentshatteringer.
Længden af den ægbærende Hun er 30""". Hannen
er betydelig større og opnaar en Længde af indtil 38""".
Forekomst og Udbredning. Denne smukke og
char-aeteristiske Art er under Expeditionen observeret paa 2
forskjellige langt fra hinanden liggende Stationer; den ene
(Ståt. 48) beliggende i Havet Øst af Island, den anden
(Ståt. 336) udenfor Sydpynten af Spitsbergen; Dybden fra
70 til 299 Favne. Af disse Stationer tilhorer ialfald den
ene (Ståt. 48) den kolde Area, og den anden ligger under
en saa hoi nordlig Brede, at Artens arktiske Oprindelse
neppe er tvivlsom.
Angaaende dens geographiske Udbredning udenfor
Nordhavet, saa er den observeret saavel ved Grønland som
ved Nordamerikas Østkyst, nordenom Cap Cod.
lappets, the foremost is the deeper, and rounded off at the
bottom. Anteriorly, just above the powerful terminal claw,
the hand extends forward as a pointed prolation.
The branchial scales, the marsupium, and the 3
posterior pairs of legs’exhibit nothing characteristic in their
structure.
Of the 2 abdominal appendages, the anterior (see fig.
5 c) is distinctly two-jointed, and much larger than the
posterior, which constitutes merely a pair of simple
appendages finely ciliated along the margins.
The Hale (fig. 5 x) is considerably larger than the
female, and somewhat more elongate in form. The 2
anterior segments do not, however, exhibit any such anomalous
relation as in the males of the preceding genus. With
regard to the armature of the body, it differs somewhat
from that in the female, the dorsal spikes being much less
prominent, whereas the whole surface of the body, as also
a considerable portion of the limbs, are rough from numerous
small acute protuberances.
The 1st pair of antennæ are more elongate than in
the female, with the peduncle exhibiting a specially powerful
development, whereas the flagellum would appear to be
relatively shorter.
The 2nd pair of. legs differ in structure from that
in the female simply by the basal joint occurring a trifle
more elongate; but the hand exhibits precisely the same
form. The whole of this pair of legs, as also the peduncle
of the 1st pair of antennæ, are densely beset with the
fore-mentioned small protuberances.
Nor does the abdominal division of the body with
its appendages (fig. 5 r), present any essential difference
from that in the female. Anterior to it, issue from the
last body-segment the 2 outer generative appendages, of
a similar appearance to those in the male Caprella
spinosissima.
The body is in both sexes well-nigh translucent,
whitish. with irregular pigmentary shadings.
Length of the ovigerous female 30""". The male is
considerably larger, attaining in length 38""".
Occurrence and Distribution. — This beautiful and
characteristic species was met with on the Expedition at 2
widely distant Stations; the one (Ståt. 48) lav east of
Iceland. the other (Ståt. 336) was located off’ the southern
extremity of Spitzbergen; depth ranging from 70 to 299
fathoms. Of these Stations, one at least (Ståt. 48) belonged
to the cold area, and the other was located in so high a
latitude, that the Arctic origin of the species can hardly
be doubtful.
As regards its geographical distribution without the
limits of the Northern Ocean, the animal has been observed
off Greenland and the eastern coast of North America,
north of Cape Cod.
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