- Project Runeberg -  Den Norske Nordhavs-expedition 1876-1878 / The Norwegian North-Atlantic Expedition 1876-1878 / 6. Bind /
47

(1880-1901)
Table of Contents / Innehåll | << Previous | Next >>
  Project Runeberg | Catalog | Recent Changes | Donate | Comments? |   

Full resolution (JPEG) - On this page / på denna sida - Sidor ...

scanned image

<< 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.

47

de vigtigste Indvolde med stor Tydelighed skinnede
igjennem de særdeles tynde Integumenter. Meget ioiuefaldende
var saaledes den udsædvanlig store i den forreste Del af
Forkroppen liggende kugleformige Mave, der var fyldt med
rodfarvet Indhold.

Længden af det uudersogte Exemplar er. maalt fra
Enden af Antennebladene til Spidsen af de ydre
Halevedhæng 20""". en Størrelse, der betydelig overskrider samme
bos de hidtil bekjendte Arter af denne Slægt.

Forekomst og Udbredning. Et enkelt, temmelig vel
vedligeholdt Exemplar, en fuldvoxen Hun, optoges under
Expeditionen lste Togt med Bundskraben fra et Dyb af
498 Favne i Havet Vest af Trondhjemsfjorden (Ståt. 87).
Under 2det Togt erholdtes desuden et stærkt mutileret
Exemplar af samme Art længere .Xord i Havet udenfor
Helgeland (Ståt. 124) fra 350 Favnes Dybde.

Da begge disse Stationer tilhorer den kolde Area, er
Arten utvivlsomt at betragte som en ægte arktisk Form,
hvis Udbredning vistnok for en Del vil kunne antages at
l’alde sammen med de øvrige paa de nævnte Stationer
erholdte Dybvandsdyr.

the principal viscera shone with great distinctness through
the exceedingly thin integuments. Very conspicuous, for
example, in the anterior portion of the cephalo-thorax, was
the unusually large and globular stomach, with its
red-coloured contents.

The length of the specimen examined, measured from
the tip of the antennal scales to the point of the outer
caudal appendages, reaches 20""", a size considerably
exceeding that attained by any previously known species of
the genus.

Occurrence and Distribution. — A single,
comparatively uninjured specimen, viz. a full-grown female, was
brought up, on the first cruise of the Expedition, in the
dredge, from a depth of 498 fathoms, in the open sea,
west of the Trondhjemtjord (Ståt. 87). On the second
cruise, an example of the same species was obtained, in a
very mutilated condition, farther north, off Helgeland (Ståt.
124), from a deptli of 350 fathoms.

Both these Stations being in the cold area, the species
may unquestionably be regarded as a true Arctic form, the
distribution of which, to some extent, no doubt corresponds
with that of the other deep-sea animals collected at the
said Stations.

Gen. Parerythrops, G. O. Sars, 1869.

Undersøgelser over Christianiafjordeus Dybvandsfauua.

8. Parerythrops spectabilis. G. O. Sars, n. sp.

(Pl. V, Fig. :.—12).

Part rythrops spectabilis, G. O. Sars, Prodromus descriptions Crust, etc.

No. 32.

Artseharacteristik. Rygskjoldet stort og opsvulmet,
med skarpt markeret Cervicalfure og Fanderanden i Midten
vinkelformigt fremspringende. Øinene usædvanUg smaa med
gulrødt Pigment. 2det Par Føleres Blad kjendeligt længere
end lste Pars Skaft, afiangt-rhomboidalt, 3 Gange saa langt
som bredt, med Enden særdeles skjævt afskaaret og det
tandformige Fremspring ved det ydre Hjørne meget lidet.
Hannens lste Par Bagkropslemmer rudimentære, af samme
Udseende som hos Hunnen. Det midterste Halevedhæng
ved Spidsen bevæbnet med 6 omtrent ligestore Torner. De
ydre Halevedhængs indre Plade langs den indre Kant under
Randbørsterne forsynet med talrige smaa Torner; Otolithen
usædvanlig liden. Legemet prydet med smukt purpurfarvet
Pigment. Længden indtil 26""".

Findested. Ståt. 31, 237.

Bemærkninger. Fra Slægtens øvrige Arter, med
hvilke nærværende Fonn viser en stor kabituel Lighed, vil
den strax kunne kjendes, foruden ved sin meget betydelige

(jen. Parerythrops, G. O. Sars, 1869.

Undersøgelser over Christianiafjordens Dybvandsfauua.

8. Parerythrops spectabilis, G. O. Sars, n. sp.

(Pl. V, figs. 12).

Parerythrops spectabilis, G. O. Sars, Prodromus descriptionis Crust, etc.,
No. 32.

Specific Character. - - Carapax large and tumid, with
the cervical grove sharply defined, and the frontal margin
angular and projecting in the middle. Eyes remarkably
small, and furnished with a yellowish-red pigment. Scale
of 2nd pair of antennæ perceptibly longer than peduncle
of 1st pair, oblongo-rhomboidal in form, three times as
long as broad, with the end very obliquely truncate, and the
dentiform projection at the outer corner exceedingly small.
First pair of pleopoda in male rudimentary, and exhibiting
the same appearance as those in female. Telson armed at
the point with 6 spines, about equal in size. Inner plate
of outer caudal appendages furnished along the inner border,
beneath the marginal bristles, with numerous small spines;
the otolith remarkably small. Body brilliantly coloured
with a beautiful purple pigment. Length reaching 26""".

Locality. — Stats. 31, 237.

Remarks. From the other species of the genus,
to whicli the present form exhibits great habitual
resemblance, it may be readily distinguished, apart from its very

<< prev. page << föreg. sida <<     >> nästa sida >> next page >>


Project Runeberg, Sun Dec 10 20:02:43 2023 (aronsson) (download) << Previous Next >>
https://runeberg.org/nordhavexp/6/0063.html

Valid HTML 4.0! All our files are DRM-free