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136
hos foregaaende Art, men er talrigere og ordnede i flere
Rader; de i den inderste Rad — de egentlige Randtorner
— er dog betydelig større end de i de øvrige.
Gangfødderne (se Fig. 2) er af spinkel Fonn, omtrent
dobbelt saa lange som Legemet (uden Snabelen), og tæt
besatte med fine, ensformigt udviklede Haar. Hos Hunnen
er 2det Hofteled særdeles stærkt, næsten blæreformigt
opblæst og fyldt med store Ægceller, medens dette Led hos
Hannen (se Fig. 2 p) er smalt og af lineær Form; hos
begge Kjon er det mere end dobbelt saa langt som de 2
øvrige Hofteled tilsammen. Laarleddet er omtrent af
Hoftepartiets Længde og hos begge Kjøn af smal lineær Form;
hos Hannen har det nær Basis en stumpt afrundet Knude
(Fig. 2 q), som ganske mangler hos Hunnen. Af de 2
Lægled er det 2det noget længere end det lste og omtrent
af Laarleddets Længde, begge meget smale, lineære.
Endepartiet (Fig. 2 r, 2 s) er omtrent halvt saa langt som 2det
Lægled og har Tarsalleddet meget kort, medens Fodleddet
er temmelig stærkt forlænget og næsten lige.
De til de falske Fødder hos Hannen fæstede Æg er
(se Fig. 2 c) forholdsvis meget store, kugleformige, og faa
i Antal, neppe over 8—12 Stykker. De er enkeltvis
grupperede omkring 4de Led, uden at være omgivne af nogen
fælles Omhyllingsmembran.
Legemet er i levende Tilstand af hvidagtig Farve og
temmelig gjennemsigtigt, saa at tiere af de indre Dele
skinner mere eller mindre tydeligt igjennem
Integumen-terne. Saaledes er, naar Legemet sees nedenfra (Fig. 2 b)
den hele Buggangliekjæde meget iøinefaldende. Den
bestaar af 5 vel adskilte Ganglier, hvoraf det forreste er af
temmelig smal og forlænget Form. De fra Ganglierne
udgaaende Hovednerver er ligeledes tydelig at forfølge.
Forekomst. Af denne characteristiske Fonn blev
under Expeditionen talrige Exemplarer indsamlede, navnlig
i stor Mængde paa de paa Bundskraben fæstede
Svab-berter. Arten er observeret paa ikke mindre end 5
forskjellige Stationer, spredte omkring i det af os bereiste
Havstrøg fra den 63de til den 78de Bredegrad. Af
Stationerne ligger 2 (St. 35 og 53) i Havet mellem Norge paa
den ene Side og Færøerne og Island paa den anden, en
3die (St. 205) NV af Lofoten, de 2 øvrige (St. 303 og
353) længere Nord i Havet mellem Spitsbergen og Beeren
Eiland paa den ene Side og Grønland og Jan Mayen paa
den anden. Dybden fra 1081 til 1539 Favne. Alle
Stationer tilhører den kolde Area.
Udbredning. Da denne Form hidtil ikke er
observeret af andre Forskere, kan om dens Udbredning for
Tiden kun siges, at den synes at være indskrænket til den
dybe, med iskoldt Vand paa Bunden fyldte Indsænkning i
Nordhavet, der ligger vestenom de store Havbanker og
disses Fortsættelse mod Nord forbi Beeren Eiland og
Spitsbergen. Østenfor den 13de Længdegrad er den hidtil
ikke observeret.
(fig. 2 o) exhibit a similar appearance as in the preceding
species, but are more numerous and arranged in several
series; those in the innermost series — the real marginal
species — are, however, considerably larger than the others.
The ambulatory legs (see fig. 2) are slender in form,
about twice as long as the body (excluding the proboscis),
ana are closely beset with fine, uniformly developed
setæ. In the female the 2nd coxal joint is very much,
almost vesicularly inflated, and is filled with large ovicells,
whilst the same joint in the male (se fig. 2 p) is narrow
and linear in form; in both sexes it is twice as long as
the 2 other coxal joints taken together. The femoral joint
is about the length of the coxal part, and in both sexes
is narrow linear in form; it has, in the male, near the
base, a bluntly rounded nodule (fig. 2 q), which is quite
absent in the female. Of the 2 tibial joints the 2nd is
somewhat longer than the 1st one, and about the length
of the femoral joint, both very narrow, linear. The
terminal part (fig. 2 r, 2 s) is about half the length of the
2nd tibial joint and has the tarsal joint very short, while
the propodal joint is pretty strongly elongated and almost
straight.
The ova attached to the false legs in the male (see
fig. 2 c) are relatively very large, globular in shape, and
few ill number, scarely more than 8—12. They are
grouped singly, round the 4th joint, without being
enveloped in any common enclosing membrane.
The body is, in the live state, of whitish colour and
pretty transparent, so that several of the internal organs
appear more or less distinctly visible through the
integuments. Thus, when the body is viewed from below (fig.
2 b), the entire chain of ventral ganglia is very prominent.
It consists of 5 well separated ganglia, of which the foremost
is of rather narrow and elongate form. The chief nerves
issuing from the ganglia may also be distinctly traced.
Occurrence. Numerous specimens of this
characteristic form were collected during, the expedition,
especially attached in great numbers to the swabs secured to
the dredge. The species was observed at not less than 5
different stations scattered about in the tracts of the ocean
cruised in, from the 63rd to the 78th parallels of latitude.
Of- the stations, 2 (St. 35 and 53) are situated in the
ocean between Norway on the one side and the Faeroe
Islands and Iceland on the other; a 3rd (St. 205) to the
N. W. of Lofoten; the 2 others (St. 303 and 353) farther
north, in the ocean between Spitzbergen and Beeren Eiland
on the one side and Greenland and Jan Mayen on the
other. Depth from 1081 to 1539 fathoms. All the stations
pertain to the cold area.
Distribution. As this form has not, hitherto, been
observed by other naturalists, it can, for the present, only
be said of its distribution, that it appears to be confined to
the deep basin filled at the bottom with ice-cold water that
exists in the North Sea, situated to the west of the great
ocean banks and their continuation northwards past Beeren
Island and Spitzbergen. To the east of the 13th degree
of longitude it has not hitherto been observed.
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