78 
havt til Undersogelse 2 vel udprsegede Exemplarer af denne 
Art fra det kariske Hav, indsamlede under Nordenskjolds 
Expedition 187G paa 17 F. D. 
TJdbredning. Arten er udbredt til Gronland (Kroyer), 
Barents Soen (Hoek) 0stkysten af Nordamerika (Wilson). 
Af Hodge anfores den ogsaa fra England (Kysten af 
Durham). 
23. Nymphon leptocheles, G. 0. Sars. 
(PI. VIII, Fig. 1, a — i). 
Nymphon leptocheles , G. 0. Sars. Pycnogonidea borealia & 
arctica, No. 23. 
Artseharacter. Legemet temmelig spinkelt, med vidt 
adskilte Sidefortsatser, Hovedsegmentet kun lidet lmngere 
end dc 2 folgende Segmenter tilsammen, Halscri forholdsvis 
kort, men stserkt indknebet, Pandedelen temmelig bred. 
0ieknuden noget oplioiet. lige afskaaret i Enden, med spidst 
udtrukne Sidehjorner. Snabelen forholdsvis stor, af Hoved- 
segmentets Lfengde. Saxlemmerne ualmindelig svage, Haan- 
den noget kortere end Skaftot, meget smal og tset baaret, 
Fingrene staerkt forlamgede og tynde, lsengere end Palmen. 
Folerne meget spinkle, med 2det og 3die Led af ens 
Lsengde, naestsidste staerkt forlaenget, mesten dobbelt saa 
langt som sidste. De falske Fodder bos Hannen noget 
lsengere end Legemet, 5te Led vel saa langt som 4de og 
forsynet med en Rad af borstebserende Knuder, Endedelen 
noget kortere end 5te Led, Randtornerne grovt sangtakkede, 
uden nogen stserkere Tand ved Basis. Gangfodderne spinkle, 
nsesten 5 Gange lsengere end Legemet, og besatte med 
korte spredte Haar, 2det Lsegled s&rdeles tyndt, 1 / 3 lsengere 
end Laarleddet og mere end dobbelt saa langt som det 
terminate Afsnit; Tarsalleddet linear t, forlamget; Fodled- 
det adskilligt kortere, ligeledes meget smalt og langs Inder- 
kanten besat med sserdeles smaa, haarforinige Torner ; Ende- 
kloen af middelmaadig Lamgde, jevnt krummet i det ydre 
Parti; Bildoerne smaa. Farven hvidagtig. Legemets Lsengde 
6 Spandvidde 62”"”. 
Bemserkninger. Fra alle Ovrige Arter af Slsegten 
er denne let kjendelig ved de ualmindelig svagt byggede 
Saxlemmer og navnlig ved Haaudens spinkle Form, lige- 
ledes ved Folernes og de falske Fodders Bygning 1 Be- 
skaffenheden af de 2 ydre Fodled ligner den noget N. 
longitarse, men kjendes let fra denne Art blandt andet ved 
den betydelig kortere Hals. I visse Henseender synes den 
at danne en Overgang til den folgende Gruppe af Slsegten, 
for hvilken N. Stromii, Kr. er Typen. 
Beskrivelse. Legemets LseDgde er bos fuldvoxne 
Exemplarer omkring med en Spandvidde af 62”"". 
Formen er (se PI. VIII, Fig. 1) idethele temmelig 
slank, dog neppe i den Grad som bos foregaaende Art. 
Kroppen (Fig. 1 a, 1 b) er smalt cylindrisk og bar Side- 
Spitzbergen (Stat. 336), at a depth of 70 fathoms. More- 
over, I have had for examination 2 well marked individuals 
of this species from the Kara Sea, collected on Norden- 
skj old’s Expedition in 1876 at a depth of 17 fathoms. 
Distribution. The species extends to Greenland 
(Kroyer), Barents Sea (Hoek), and the east coast of North 
America (Wilson). Hodge also records it from England 
(coast of Durham). 
23. Nymphon leptocheles, G. 0. Sars. 
(PL VIII, fig. i, a— i). 
Nymphon leptocheles, G. 0. Sars, Pycnogonidea borealia et 
arctica, No, 23. 
Specific Characters. Body rather slender, with widely 
separated lateral processes. Cephalic segment but little longer 
than the 2 following segments taken together, neck com- 
paratively short but strongly constricted, frontal part rather 
broad. Oculiferous tubercle somewhat elevated, truncated at 
the extremity, with acute, produced lateral corners. Pro- 
boscis comparatively large, same length as the cephalic 
segment. Chelifori uncommonly feeble, hand a trifle shorter 
than the scape, very narrow and densely hairy, fingers exceed- 
ingly elongate and slim, longer than the palm Palpi very 
slender, with 2nd and 3rd joints equal in length, the penulti- 
mate one greatly elongated, nearly twice as long as the term- 
inal one. False legs in male somewhat longer than the body. 
5th joint a little longer than the 4th and furnished with a row 
of setiferous tubercles, terminal part a little shorter than 5th 
joint, marginal spines coarsely serrate, without any strong 
tooth at the base. Ambulatory legs slender, almost 5 times 
longer than the body, and beset with short, scattered hairs, 2nd 
tibia! joint particularly slender, J / 3 longer than the femoral one, 
and more than twice as long as the terminal section; tarsal 
joint linear, elongate; propodal joint considerably shorter, 
likewise very slender, and beset along the inner edge with ex- 
ceedingly small capilliform spines; terminal claw of moderate 
length, evenly curved in the outer part; auxiliary claws small. 
Colour whitish. Length of body li 1 /,"””. extent 62”"". 
Remarks. This animal is easily recognised from all 
the other species of the genus, by the remarkably feeble 
chelifori and, particularly, by the slender form of the hand, 
also by the structure of the palpi and the false legs. In 
the character of the 2 outer leg-joints it resembles a little 
N. longitarse. but may, amongst other criteria, be at once 
distinguished from that species by the considerably shorter 
neck. In some respects it would seem to constitute a 
transition to the succeeding group of the genus of which 
N. Stromii, Kr. is the type. 
Description. The length of the body in full-grown 
specimens is about G 1 /./"*, the extent 62’"”’. 
The body (see PI. VIII, fig. 1) is rather slender, 
though hardly to such a degree as in the preceding species. 
The trunk (fig. 1 a, 1 b) is narrow cylindrical, and has 
/ 
