Full resolution (JPEG) - On this page / på denna sida - Sidor ...
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
89
148 til 743 F. Jeg har endvidere havt Anledning til at
undersøge flere Exemplarer fra det kariske Hav, tagne
paa 3 forskjellige Punkter under Nordenskjolds Expedition
1875 og 1876; Dybden fra 40—70 F. De af Dr. Hansen
undersøgte Exemplarer var ligeledes fra det kariske Hav.
Udbredning. Ifølge skriftlig Meddelelse fra Dr.
Hansen, er Arten udbredt til det grønlandske Hav, idet
den 1886 af Th. Holm er taget paa 72° 40’ N. Br.. 57°
15’ V. L.; Dybden 118 F. Den er saaledes utvivlsomt
at betragte som en ægte arktisk Fonn. Rigtignok er
den under Nordliavs-Expeditionen taget saa langt Svd som
den 63de Bredegrad; men det er at mærke, at den her
kun forekom paa meget betydeligt Dyb i den kolde Area,
hvor Forholdene tilnærmelsesvis svarer til dem paa
grundere Vand i den arktiske Zone.
the others in the vicinity of Beeren Eiland and Spitzbergen;
depth from 148 to 743 fathoms. I have also had an
opportunity of examining divers specimens from the Kara
Sea. taken in 3 different localities on Nordenskjöld’s
Expedition, 1875 and 1876; depth from 40 to 70 fathoms. The
specimens examined by Dr. Hansen fwere likewise from the
Kara Sea.
Distribution. According to a written communication
from Dr. Hansen, the species occurs as far north as the
Greenland Sea, Th. Holm having taken it (1886) in lat.
72° 40’N., long. 57" 15’ W.; depth 118 fathoms. The
animal must unquestionably, therefore, be regarded as a genuine
Arctic form. It was taken, it is true, on the North-Atlantic
Expedition as far south as the 63rd parallel of latitude;
but it is to be remarked that it occurred there only at a
very considerable depth, in the cold area, where the
conditions agree approximately with those distinguishing
shallower waters in the Arctic Zone.
27. Nymphon macrum. Wilson.
(Pl. IX. Fig. 2, a—g).
Nymplion macrum, Wilson, Report on the Pycnogonida of
New England. United States Commission of Fish and
Fisheries, Report for 1878, p. 487, Pl. IV, figs.
21 -23.
—• G. O. Sars. Pycnogonidea borealia &
arctica. No. 27.
Artscharacter. Legemet særdeles spinkelt, med tynde
og forlængede Lemmer. Hovedsegmentet omtrent saa langt
som de 3 følgende Segmenter tilsammen. Halsen meget smal,
Pandedelen stærkt udvidet. Øieknuden noget ophøiet og
afstumpet i Enden. Snabelen af Hovedsegmentets Længde,
smalt cylindrisk. Saxlemmerne særdeles spinkle, forholdsvis
kortere end hos N. elegans. Skaftet ret, med nogle længere
Borster i den øvre Kant, Haanden af Skaftets Længde,
meget smalt, Fingrene længere end Palmen, begge udtrukne
i en yderst tynd og stærkt indbøiet Spids, Tænderne i
Inderkanten af den ubevægelige Finger lange og tynde, af
ulige Længde. Følerne overordentlig smækre, 2det Led
næsten dobbelt saa langt som 3die, sidste Led kortere og
betydelig smalere end 4de, begge tilsammen længere end
3die. De falske Fodder hos Hannen 1/4 længere end
Legemet. 5te Led stærkt forlæuget, Randtornerne bredt
lancetformige og regelmæssigt saugtakkede i Kanterne.
Gangfødderne ualmindelig spinkle og besatte med spredte Haar,
næsten 5 Gange længere end Legemet, 2det Lægled stærkt
forlænget og overordentlig tyndt, mere end 4 Gange længere
end det terminale Afsnit, Fodleddet kortere end
Tarsalleddet, begge tynde og lineære, med smaa haarformige
Torner i Kanterne, Endekloen halvt saa lang som
Fodleddet. Bikløerne ualmindelig store, 2/a saa lange som selve
Kloen. De ydre Ægmasser smaa, men med meget store
Æg. Legemets Længde 8"""; Spandvidde 85""".
Den norske Nordllavsexpedition. G. O. Sars: Pycnogonidea.
27. Nymphon macrum, Wilson.
(PI. IX, fig. 2, a—g).
Nymphon macrum, Wilson, Report on the Pycnogonida of
New England. United States Commission of Fish and
Fisheries, Report for 1878, p. 487, Pl. IV, figs.
21—23.
— — G. O. Sars. Pycnogonidea borealia &
arctica, No. 27.
Specific Characters. Body exceedingly slender, with
thin and elongated limbs. Cephalic segment about as long
as the 3 following segments taken together, neck very
narrow, frontal part greatly expanded. Oculiferous tubercle
somewhat elevated, and blunted at the extremity.
Proboscis same length as the cephalic segment, narrow
cylindric. Chelifori exceedingly slender, relatively shorter
than in N. elegans, scape straight, with a few long setæ
on the upper edge, hand the length of scape, very narrow,
fingers longer than the palm, both drawn out to an
exceedingly thin and strongly incurvate point, teeth on the inner edge
of the immobile finger long and thin, unequal in length. Palpi
remarkably slender, 2nd joint almost twice as long as the 3rd,
last joint shorter and considerably more slender than the
4th, both taken together longer than the 3rd. False legs in
the male one-fourth longer than the body, 5th joint greatly
elongated, marginal spines broad-lanceolate and regularly
serrated on the edges. Ambulatory legs uncommonly slim
and beset with scattered hairs, almost five times as long as
the body, 2nd tibial joint greatly elongated and remarkably
thin, more than 4 times longer than the terminal section,
propodal joint shorter than the tarsal joint, both thin and
linear, with small capilliform spines on the edges, terminal
claw half the length of the propodal joint, auxiliary claws
uncommonly large, two-thirds of the length of the claw
itself. Outer egg-masses small, but with very large ova.
Length of body 8"""; extent 85""".
12
<< prev. page << föreg. sida << >> nästa sida >> next page >>
