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119
til 649 F. Navnlig forekom den i ganske enorme
Masser paa Ståt. 18. Alle Stationer, alene med
Undtagelse af Ståt. 363, tilhører den kolde Area. Ogsaa fra
det kariske Hav har jeg havt ikke faa Exemplarer til
Undersøgelse, indsamlede under Nordenskjolds Expeditioner,
og som sædvanlig her paa betydelig grundere Vand end i
Nordhavet.
Udbredning. Arten synes at have ell vid
Udbredning i de arktiske Have. De af Bell undersøgte
Exemplarer var fra arktisk Nordamerika, Wellington-Canalen, og
af Miers angives den ogsaa fra Discovery-Bugten. Af
Heller anføres den fra Frants Joseph Land og af Hoek
fra forskjellige Stationer i Barents Soen. Under
„Lightening" Expeditionen toges den i Færo-Shetlands-Renden
(Wyville Thompson), og under „Knight Errant
"-Expeditionen erholdtes denne Art ifølge Hoek saa langt Syd soin
60° N. B., men paa meget dybt Vand. Endelig anføres
den af Hansen fra det kariske Hav. At Arten er en ægte
arktisk Fonn, synes ifølge dens Forekomst utvivlsomt.
of Spitzbergen; depth from 260 to 649 fathoms.
Especially did it present itself in quite enormous quantities at
Station 18. All the Stations, with exception of Ståt 363
alone, pertain to the cold area. From the Kara Sea. also,
I have had not a few specimens for investigation, collected
during Nordenskjöld’s Expeditions, and, as usual here, in
much shallower depths than in the North Atlantic Ocean.
Distribution. The species appears to have an
extensive distribution in the Acrtic seas. The specimens
investigated by Bell were from Arctic North America,
Wellington Channel; and it is also remarked by Miers
from Discovery Bay. Heller has remarked it from Frants
Joseph’s Land, and Hoek from several stations in Barents
Sea. On the „Lightning" Expedition it was taken in the
Faroe-Shetland channel (Wyville Thompson), and on the
„Knight Errant" Expedition it was obtained, according
to Hoek, as far south as 60" N. lat. but at a very great,
depth. Finally, it is remarked by Hansen from the Kara
Sea. That the species is a genuine Arctic form seems
from its occurrence to be indubitable.
Fam. 5. Ammotheidæ.
Legemet sammentrængt, mere eller mindre
ufuldkomment segmenteret. Saxlemmerne smaa og rudimentære, i
fuldt udviklet Tilstand uden Chela. Folerne vel udviklede,
4—9-leddede. Falske Fodder tilstede hos begge Kjøn,
7—10-leddede, uden Endeklo. Gangfødderne med Bikløer.
Snabelen tenformig, mere eller mindre bevægeligt forbunden
med Hovedsegmentet.
Bemærkninger. Denne Familie indeholder en Del,
fordetmeste meget smaa og undersætsigt byggede
Pycnogonider. der især udmærker sig fra de i det foregaaende
omtalte Former ved den rudimentære Beskaffenhed af
Saxlemmerne og ved Snabelens Bygning, i hvilke
Henseender de viser mere Lighed med de til følgende Familie,
Eurycydidæ, henførte Former. Familien synes at
indeholde talrige Slægter, hvoraf dog flere er meget
ufuldstændigt characteriserede. Som utvivlsomt henhørende til
nærværende Familie maa jeg betragte følgende Slægter:
Am-mothea, Leaeh; Tanystylum, Miers; Pariboea, Philippi;
Oiceobates, Hesse; Oorhynchus, Hoek; Clothenia, Dohrn og
Trygceus. Dohrn. Ogsaa om adskillige andre opførte Slægter
kan det med nogenlunde Sikkerhed siges, at de tilhorer
nærværende Familie; men hvorvidt de i Virkeligheden er
distincte, eller om de falder sammen med nogen af de
ovenanførte Slægter, lader sig paa Grund af den
ufuldstændige Beskrivelse vanskeligt afgjøre. Saadanne Slægter
er: Böhmia, Hoek; Phanodesmus, Costa; Pephredo, Goodsir;
Platycéhis, Costa; Lecythorhynchus, Bohm. Hos os er
Familien kun repræsenteret af en enkelt Slægt.
Fam. 5. Ammotheidæ.
The body compact, more or less imperfectly
segmented. Chelifori small and rudimentary, in the fully
developed state no chela. Palpi well-developed, 4—9-jointed.
False legs present in both sexes, 7—10-jointed, without
terminal claw. Ambulatory legs with auxiliary claws.
Proboscis fusiform, more or less movably connected to the
cephalic segment.
Remarks. This family includes a number of. chiefly
very small and stoutly built Pvenogonids, which especially
distinguish themselves from the previously mentioned forms
by the rudimentary nature of the chelifori and the
structure of the proboscis, in which respects they display a
greater resemblance to the forms referred to the following
family Eurycydidæ. The family appears to include
numerous genera, of which, however, several are very imperfectly
characterized. I must regard the following genera as
indubitably pertaining to the present family: Ammothea,
Leach; Tanystylum, Miers; Pariboea, Philippi; Oiceobates,
Hesse; Oorhynchus, Hoek; Clotlienia, Dohrn and Trygæus,
Dohrn. Also in regard to several other genera which
have been established, it may with some degree of certainty
be said, that they pertain to the present family; but
whether they really are distinct, or coincide with any of
the above-named genera is difficult to determine owing
to the imperfect descriptions supplied. Such genera are:
Böhmia, Hoek; Phanodesmus. Costa; Pephredo, Goodsir;
I’latycelus, Costa; Lecythorhynchus, Bohm In the northern
seas the family is only represented by a single genus.
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