91 



(Fig. 2 a) betydelig sterkere forlængede end hos Hunnen, 

 omtrent l /* længere end Legemet og har som sædvanlig- 

 ste Led længst. Endedelen er kortere end dette Led og 

 har Randtornerne (Fig. 2 f) af bred laneetdannet Form, 

 med en regelmæssig Rad af sterke Saugtakker i hver 

 Kant. 



Gangfodderné er (se Fig. 2) ualmindelig spinkle og 

 forlængede, næsten 5 Gange længere end Legemet, og be- 

 satte med spredte, temmelig lange Haar. Af Leddene er 

 som sædvanlig 2det Lægled det længste og ganske over- 

 ordentlig tyndt. Det terminal Afsnit (Fig. 2 g) er neppe 

 '/i saa langt og har Tarsalleddet kjendelig længere end 

 Fodleddet. begge af smal lineær Form og besatte med 

 spredte Smaaborster. Endekloen er neppe mere end halvt 

 saa lang som Fodleddet, men temmelig stærk og tydeligt 

 leformigt tilskjærpet. Bikloerne udmærker sig i hoi Grad 

 ved sin betydelige Storrelse. idet de er 2 / 3 saa lange som 

 selve Kloen. 



De ydre Ægmasser forefindes kun i et enkelt Par 

 og sædvanligvis fæstede omkring de falske Fodders 5te 

 Led. De er (se Fig. 2 a) forholdsvis smaa og af kugle- 

 dannet Form, hvorimod de i dem indeholdte Æg er af 

 ganske ualmindelig Storrelse. 



Forekomst. Jeg har fundet denne Art ikke saa 

 sjelden langs vor Vestkyst, og nordlig til Lofoten, paa et 

 Dyb af 40— 100 F. Under Nordhavs-Expeditionen toges 

 den enkeltvis paa 2 Stationer, den ene (Stat. 262) Øst af 

 Vardø, den anden (Stat. 29U) omtrent midtveis mellem 

 Finmarken og Beeren Eiland; Dybden fra 148 til 191 F. 



Udbredning. Arten er udbredt til Nordamerikas 

 Østkyst, hvor den er tåget i Golfen ved Maine paa 85 — 

 115 F. D. (Wilson). At domme efter denne Udbredning 

 i Forbindelse med dens Forekomst i Havet udenfor Fin- 

 marken, ruaa den utvivlsomt ansees tor en oprindelig ark- 

 tisk Form. 



28. Nymphon micronyx, G. 0. Sårs. 



(Pl. IX, Fig. 3, a-g). 



Nymphon micronyx, G. 0. Sårs, Pycnogonidea borealia & 

 arctica, No. 28. 



Arts ehara eter. Legemet af forholdsvis undersætsig 

 Form. Hovedsegmentet neppe længere end de 2 følgende 

 Segmenter tilsammen; Halsen forholdsvis kort og tyk; 

 Pandedelen kun lidet udvidet. Øieknuden meget lav, af- 

 rundet. Snabelen kortere end Hovedsegmentet, cylindrisk. 

 Saxlemmerne forholdsvis smaa, Haanden neppe saa lang 

 som Skaftet, af aflang oval Form, Fingrene kortere end 

 Palmen. Folerne korte og tykke, tret lraarede. 2det og 

 3die Led af ens Storrelse. sidste noget længere end næst- 

 sidste: begge tilsammen saa lange som 3die. De falske 

 Fød der hos Hannen noget længere end Legemet, Endedelen 



male (fig. 2 a), they are considerably more elongated than 

 in the female, about one-fourth longer than the body, and 

 have, as usual, the 5th joint longest. The terminal part 

 is shorter than that joint, with the marginal spines (fig. 

 2 f), broad-lanceolate in form and bearing a regular series 

 of strong saw-teeth on either edge. 



The ambulatory legs (see fig. 2) are uncommonly 

 slender and elongated, almost 5 times longer than the body, 

 and beset with scattered, rather long hairs. Of the 

 joints, the 2nd tibial joint is, as usual, the longest, and 

 quite remarkably slender. The terminal section (fig. 2 g) 

 is hardly one-fourth as long, and has the tarsal joint ap- 

 preciably longer than the propodal joint, both narrow- 

 linear in form and beset with scattered minute sete. The 

 terminal claw is hardly more than half as long as the 

 propodal joint, but rather powerful and distinctly falci- 

 formly sharpened. The auxiliary claws prominently dis- 

 tinguish themselves by their considerable size, as they are 

 two-thirds as long as the claw itself. 



The outer egg-masses occur as a single pair only. 

 and, in general, affixed round the 5th joint of the false 

 legs. They are relatively small (se fig. 2 a) and globular 

 in form, whereas the ova they contain are of quite a 

 remarkable size. 



Oecurrenee. I have not infrequently met with this 

 species along the West Coast of Norway, and as far north 

 as Lofoten, at a deptb of from 40 to 100 fathoms. On 

 the North-Atlantic Expedition solitary specimens were 

 tåken at 2 Stations, the one (Stat. 262) east of Vardo, 

 the other (Stat. 290) about midway betweeri^ Finmark and 

 Beeren Eiland; depth from 148 to 191 fathoms. 



Distribntion. The species ranges as far as the east 

 eoast of North America, where it has been found in the 

 Gulf of Maine at a depth of 85 — 115 fathoms (Wilson). 

 To judge from this distribntion, along with its oecurrenee 

 off the coast of Finmark, the animal must doubtless be 

 regarded as originally an Arctic foi - m. 



28. Nymphon micronyx, G. O. Sårs. 



(Pl. IX, fig. 3, a — g). 



Nymphon micronyx, G. 0. Sårs. Pycnogonidea borealia & 

 arctica, No. 28. 



Speciflc Charaeters. Body eomparatively thickset in 

 form. Cephalic segment hardly longer than the 2 suc- 

 ceeding segments tåken together; neck relatively short and 

 thick ; frontal part but little expanded. Oeuliferous tubercle 

 very low, rounded. Proboscis shorter than the cephalic 

 segment, cylindric. Chelifori eomparatively small, hand hardly 

 as long as the scape, oblongo-oval in form, fingers shorter 

 than the palm. Palpi short and thick, densely hairy, 2nd and 

 3rd joints of equal size, last joint somewhat longer than the 

 penultimate one ; both tåken together as long as the 3rd. False 

 legs in the male somewat longer than the body, terminal part 



12* 



