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Ill
Arter, idet her 3die Led er fuldkommen saa langt som
’2det, og de 2 sidste Led indbyrdes af ens Længde og til—
sammentagene lig 3die.
De falske Fodder hos Hannen (Fig. 1 f) er, lige
udstrakte, omtrent af Legemets Længde og af en temmelig
spinkel Form. 5te Led er stærkt forlænget og udvides
ganske successivt mod Enden, uden her at vise en saadan
abrupt Opsvulmning som hos de 2 foregaaende Arter.
Ligeledes er de til dette Led fæstede Borster af et mere
uniformt Udseende og betydelig kortere og finere end hos
hine Arter. Randtornerne paa Endedelen (Fig. 1 g) er
forholdsvis smaa, stumpt lancetformige og uregelmæssigt
rundtakkede i Kanterne.
Gangfødderne (se Fig. 1) er kjendelig spinklere end
hos de 3 foregaaende Arter, hvorved dog er at mærke,
at det undersøgte Exemplar er en Han. De er ikke fuldt
3 Gange længere end Legemet og, navnlig i sit ydre Parti,
tæt laadne af temmelig lange og stive Haar. Laarleddet
har i Inderkanten 3 temmelig store, afrundede Knuder,
der er indskrænkede til det basale Parti af Leddet. 2det
Lægled er af smal lineær Form og omtrent 2Gang
længere end det terminale Afsnit. Dette sidste (se Fig.
1 h) ligner noget samme hos Ch. spinosum, men har
Tarsalleddet forholdsvis længere. Fodleddet er ikke fuldt
dobbelt saa langt og tiltager lidt i Tykkelse mod Enden.
I Inderkanten har det en Rad af 12—14 tynde Torner
af noget ulige Længde, de i Midten længst. Endekloen
er forholdsvis kort, neppe mere end halvt saa lang som
Fodleddet, men temmelig kraftig og stærkt krummet ved
Basis. Bikløerne er som hos Ch. spinosum vel udviklede
og omtrent halvt saa lange som Kloen.
Ingen af de 2 undersøgte Exemplarer var ægbærende,
og om de ydre Ægmassers Fonn kan saaledes intet anføres.
Forekomst. 2 Exemplarer af denne Art, begge
Hanner, toges under Nordhavs-Expeditionens sidste Togt
i Havet V. af Finmarken (Ståt. 200) paa et Dyb af 020 F.
Da Stationen tilhører den kolde Area, er Arten utvivlsomt
at betragte som ell ægte arktisk Fonn.
preceding species, the 3rd joint being in this animal fully
as long as the 2nd, and the 2 last joints uniform in length
and taken together equal to the 3rd.
The false legs in the male (fig. 1 f) are, when fully
extended, about same length as the body and rather slender
in form. The 5th joint is very much elongated, and
expands quite gradually towards the end without exhibiting
there so abrupt a tumefaction as in the 2 preceding
species. Moreover, the bristles affixed to that joint present
a more uniform appearance than in those said species. The
marginal spines on the terminal part (fig. 1 g) are
comparatively small, obtuse-lanceolate, and irregularly serrated
on the edges.
The ambulatory legs (see fig. 1) are appreciably more
slender than in the 3 preceding species; we must,
however, bear in mind that the specimen examined was a male.
They are not cfuite 3 times longer than the body, and,
more particularly in their outer part, densely hirsute with
rather long and stifi hairs. The femoral joint bears on
the inner edge 3 rather large rounded tubercles, confined
in position to the basal part of the joint. The 2nd tibial
joint is narrow linear in form, and about 21/» times
longer than the terminal section. The latter (see fig. 1 h)
somewhat resembles that part in Ch. spinosum, but has
the tarsal joint relatively longer. The propodal joint is
not quite twice as long, and increases in thickness towards
the extremity. On the inner edge it bears a series of
12—14 slender spines, somewhat unequal in length, those
in the middle being longest. The terminal claw is relatively
short, scarcely more than half as long as the propodal
joint, but rather powerful and sharply curved at the base.
The auxiliary claws are well developed, as in Ch. spinosum,
and about half as long as the main claw.
Neither of the 2 specimens examined was ovigerous,
and nothing can lie said therefore respecting the fonn of
the outer egg-masses.
Occurrence. Two specimens of this species, both
males, were taken on the last cruise of the North-Atlantic
Expedition (St. 200), in the sea west of Finmark, at a
depth of 620 fathoms. As this Station lies in the cold
area, the species must unquestionably be regarded as a
true Arctic form.
36. Chætonymphon macronyx, G. O. Sars.
(Pl. XII, Fig. 2, a—k’.
Nymplwn macronyx, G. O. Sars, Prodrom. descript. Crust.
& Pycnog. p. 365
— — Hoek, Pycnog. of „Knight Errant".
Report on the Challenger Pycnogonida, p. 95, Pl. NV,
fig. 1-7.
Hansen. Kara Havets Pycnogonider,
p. 13, Tab. XVIII. Fig. 6, a—c.
36. Chætonymphon macronyx, G. 0. Sars.
(Pl. XII, tig. 2, a—k).
Nymphon macronyx, G. 0. Sars, Prodrom. descript. Crust.
& Pycnog. p. 365.
Hoek. Pycnog. of ..Knight Errant."
Report on the Challenger Pycnogonida. p. 95. Pl. XV,
figs. 1-7.
Hansen, Kara Havets Pycnogonider,
p. 13, Tab. XVIII, fig. 6, a—c.
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