- Project Runeberg -  Den Norske Nordhavs-expedition 1876-1878 / The Norwegian North-Atlantic Expedition 1876-1878 / 6. Bind /
144

(1880-1901)
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144

gende tilsammen. Bisvøben ei’ forholdsvis liden og bestaar
kun af 3 Led.

2det Par Folere (Fig. 3 b) er omtrent af samme Længde
som 1ste Par og har Skaftets næstsidste Led længst. Svøben
er neppe længere end paa 1ste Par og bestaar omtrent af
det samme Antal Led.

Munddelene dækkes ikke ganske til Siderne af 1ste
Par Epimerer. men rager for en Del frit frem nedenfor
samme (se Fig. 3). I deres Bygning er der kun liden
Forskjel at bemærke fra de 2 længere nedenfor beskrevne
Arter.

Kindbakkerne i Fig. 3 c) bar Tyggeknuden vel udviklet
og temmelig stærkt fremspringende. Palpen er fæstet i
Hoide med denne og er temmelig stor, med sidste Led
noget udvidet paa Midten og tæt borstebesat.

1ste Par Kjæver (Fig. 3 d) bar den midterste Gren
(den egentlige Tyggelap) kraftigt udviklet og bevæbnet med
stærke Torner. Den indre Lap er derimod ganske liden
og ved Spidsen forsynet med 2 cilierede Børster. Palpen
overrager kun lidet den midterste Lap og er paa Enden
af det sammentrykte sidste Led forsynet med en Rail af
korte Torner.

2det Par Kjæver (Fig. 3 e) bestaar som sædvanligt
af 2 fra en fælles Basaldel udgaaende Lapper, hvoraf dell
indre er noget mindre end den ydre, begge tæt
borstebesatte.

Kjævefodderne (Fig. 3 j ) viser dell sædvanlige
Bygning. Den ydre Tyggelap er temmelig stor, af skjævt oval
Form og l ed det indre Hjørne forsynet med en Del Torner.
Palpens sidste Led er meget smalt, lineært og kun sparsomt
borstebesat. Endekloen forholdsvis svag.

1ste Fodpar (Fig. 3 g) er temmelig undersætsigt bygget
og ufuldkomment subcheliformt ligesom bos Arterne af
Slægterne Lysianassa og Sorarnes. Sidste Led eller
Haanden er omtrent saa langt som de 2 foregaaende Led
tilsammen og afsmalner jevns mod Enden uden at vise nogen
tydeligt begrændset Griberand.

2det Fodpar (Fig. 3 h) viser den for Familien
char-acteristiske spinkle Bygning og har de 3 ydre Led tæt
haarede og Endekloen rudimentær.

De 2 følgende Fodpar (Fig. 3 i) udmærker sig især
ved den usædvanlige Fonn af Endekloen. Denne er
temmelig tyk. dolkformig og neppe mærkeligt krummet.

De 3 bagre Fodpar (se Fig. 3) bar som sædvanligt
Hofteleddet pladeformigt udvidet, af oval Form og i den
bagre Rand utydeligt saugtakket. Sidste Par (Fig. 3 k)
udmærker sig dog i hoi Grad derved, at det nedre bagre
Hjorne af dette Led er udtrukket i en skarp dolkformig
og skraat bagudrettet Fortsats, ligesom en Spore.

the fst being, as usual, largest, and about equal in length
to the 2 succeeding ones, taken together. The secondary
ftagellum is comparatively small, and consists of only 3
articulations.

The 2nd pair of antennæ (fig. 36) are about of the
same length as the 1st pair, and have the penultimate joint
of the peduncle longest. The fiagelluni is scarcely at all
longer than that on the 1st pair, and consists about of the
same number of articulations.

The oral appendages are not quite covered at the
sides by the 1st pair of epimera, projecting as they do, in
part, freely forward" below them (see fig. 3). In structure,
they exhibit but little difference from those in the 2 species
described below.

The mandibles (fig. 3 c) have the molar protuberance
well developed and rather prominently projecting. The palp,
attached at the same height as the protuberance, is
comparatively large, with the last joint somewhat dilated in the
middle and densely beset with bristles.

The 1st pair of maxillæ (fig. 3 d) have the medial
branch (the true masticatory lobe) powerfully developed,
and armed with strong spines. Tile inner lobe, on the
other band, is quite small, and furnished at the point with
2 ciliated bristles. The palp projects but little beyond the
medial lobe, and is furnished at the extremity of the
compressed terminal joint with a row of short spines.

The 2nd pair of maxillæ (fig. 3 e) consist as usual
of 2 lobes proceeding from a common basal part, of which
the inner is somewhat smaller than the outer — both densely
beset with bristles.

The maxillipeds (fig. 3 J") exhibit the usual structure.
Tile outer masticatory lobe .is rather large, obliquely oval
in form, and at the inner corner armed with a number of
spines. The last articulation of the palp is exceedingly
slender, linear, and but sparingly beset with bristles — the
terminal claw comparatively weak.

The lst pair ot legs (fig. 3 g) are rather thickset in
structure, and imperfectly subcheliforni. as in the species
of the genera Lysia/nassa and Socarnes. The terminal
articulation. or hand, is about as long as the 2 preceding
articulations taken together, and tapers gradually towards
the end. without exhibiting any distinctly defined palm.

The 2nd pair of legs (fig. 3 h) exhibit the slim, fragile
structure characteristic of the family; they have the outer 3
articulations thickly covered with hair and the terminal
claw rudimentary.

The 2 succeeding pairs of legs (fig. 3 i) are
distinguished more especially by the unusual form of the terminal
claw, which is rather thick, dagger-shaped, and well-nigh
imperceptibly curved.

The 3 posterior pairs of legs (see fig. 3) have, as
usual, the basal joint lamelliform-dilated, oval in structure,
and, along the posterior margin, indistinctly serrate. The
last pair (fig. 3 k) are highly characterized by the lower
posterior corner of the said joint being drawn out as a
sharp, dagger-shaped projection, or, as it were. spur,
directed obliquely backward.

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