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.
31
særdeles lang. udpræget leformig, med Inderkanten
tilskjær-pet og Enden gaaende ud i en sylskarp Spids; Bikløerne,
som hos foregaaende Art. yderst smaa og rudimentære, ikke
fremragende foran Endekloens Yderkant.
Integuinenterne er temmelig tykke, men hoielige og
viser under Mikroskopet en fint granuleret Structur.
Legemet er af hvidagtig Farve og halvt gjennemskinnende,
saa at flere af de indre Dele skimtes mere eller mindre
tydeligt igjennem Huden. Sees Dyret fra Bugsiden (Fig.
3 c), viser saaledes Buggangliekjæden sig temmelig tydeligt;
den bestaar, som hos de øvrige til denne Familie hørende
Former, kun af 4 Ganglier, idet det forreste Ganglion
mangler eller rettere er sammensmeltet med det følgende.
Forekomst. Det ovenfor beskrevne Exemplar toges
ved Magerø, søndenom Trondhjemsfjorden, paa et Dyb af
ca. ’UO Favne.
Fam. 3. Pallenidæ.
Character. Saxlemmer vel udviklede; Folere
manglende ; falske Fødder tilstede hos begge Kjøn.
Bemærkninger. Ved de ovennævnte Characterer er
denne Familie vel skilt saavel fra foregaaende som
efterfølgende Familie, imellem hvilke den har sin naturlige Plads.
Foruden de 3 i det følgende nærmere omtalte Slægter,
hører herhen ogsaa den af Dohrn opstillede Slægt
NcOpal-lene, hos hvem et Rudiment af Følere er tilstede.
Endvidere tror jeg, som allerede ovenfor bemærket, at flere af
de af Hoek som Phoxichilidier beskrevne Former fra
Challenger Expeditionen rettest hør henføres til denne Familie
og indordnes under en eller flere nye Slægter. Hvad
endelig de 3 af sidstnævnte Forfatter, ligeledes fra Challenger
Expeditionen, beskrevne Pallene-Arter angaar, saa synes
mig ingen af dem rigtigt at ville passe ind under nogen af
de 3 nordiske Slægter, og, da de ogsaa indbyrdes viser
ikke ubetydelige Forskjelligheder, skulde jeg være mest
til-bøielig til at antage, at de repræsenterer 3 nye Slægtstyper
henhørende til nærværende Familie.
margin exhibits a regular series of short, anteriorly
curving spines, 18—20 in number. The terminal claw is
exceedingly long, distinctly falciform, with the inner margin
sharpened and produced at the extremity to an awl-like point;
the auxiliary claws, as in the preceding species, exceedingly
small and rudimentary, not projecting beyond the outer
margin of tile terminal claw.
The integuments are rather thick, but flexible, and
exhibit under the microscope a fine, granular sculpturing.
The body is whitish in colour and semi-translucent,
so that several of the inner parts are seen, more or less
distinctly, shining through the integument. Viewed from the
ventral side (fig. 3 c), the animal accordingly exhibits,
pretty distinctly, the ventral chain of ganglia; the latter
consists, as ill the other forms belonging to this family,
of but 4 ganglia, as the foremost ganglion is wanting, or
rather is fused into that succeeding it.
Oeeurrence. The specimen described above was taken
at Magerø, south of the Throndhjemsfjord, from a depth
of about 100 fathems.
Fain. li. Pallenidæ.
Character. Chelifori well developed; palpi wanting or
rudimentary; false legs present in both sexes.
Remarks. By the above given characters tilis family
is well distinguished, both from the preceding and the
succeeding one, between which it has its natural place.
Exclusive of the 3 genera spoken of more at large in the
sequel, to this family also belongs the genus etahlished by
Dohrn, Nespallene, in which a rudiment of palpi is present.
Moreover, 1 certainly think, as already noticed above, that
several of the forms from the Challenger Expedition,
described by Hoek as Phoxichilidians, should properly be
referred to this family, and be classed under one or more new
genera. Finally, as to the 3 Pallene species from the
Challenger Expedition, likewise described by that author,
none of them, it seems to me, can strictly lie ranked under
any of the 3 Northern genera; and exhibiting as they do
differences by no means trifling. I am most inclined to
regard them as representing 3 new generic types belonging
to the present family.
Gen. 5. Pallene, Johnston 1837.
Slægtscharacter. Legemet glat, mere eller mindre
smalt, eylindriskt, med vel adskilte Sidefortsatser.
Hoved-segmentet forholdsvis stort, med tydelig Hals og stærkt
udvidet Pandedel. De to sidste Kropssegmenter
sammensmeltede med hinanden. Halesegmentet meget lidet, stumpt
ko-niskt, opadrettet. Øieknuden mere eller mindre ophøiet,
Gen. 5. I-*nlleiie, Johnston 1837.
Generic Character. Body smooth, more or less
slender, cylindrical, with well separated lateral processes.
Cephalic segment comparatively large, with neck distinct and
frontal part prominently expanded. The two last segments
of the trunk coalescent. Caudal segment very small, obtusely
conic, directed upwards. Oculiferous tubercle more or less
<< prev. page << föreg. sida << >> nästa sida >> next page >>
