89 



148 til 743 F. Jeg har endvidere liavt Anledning til at 

 undersøge flere Exemplarer fra det kariske Hav. tagne 

 paa 3 forskjellige Punkter under Nordenskjølds Expedition 

 1875 og 1876; Dybden fra 40—70 F. De af Dr. Hansen 

 undersøgte Exemplarer var ligeledes fra det kariske Hav. 



Udbredning. Ifølge skriftlig Meddelelse fra Dr. 

 Hansen, er Arten udbredt til det grønlandske Hav, idet 

 den 1886 af Th. Holm er tåget paa 72° 40' N. Br.. 57° 

 15' V. L.; Dybden 118 F. Den er saaledes utvivlsoml 

 at betragte som en ægte arktisk Form. Rigtignok er 

 den under Nordhavs-Expeditionen tåget saa langt Syd som 

 den G3de Bredegrad : men det er at mærke, at den her 

 kun forekom paa meget betydeligt I hb i den kolde Area, 

 hvor Forholdene tilnærmelsesvis svarer til dem paa grun- 

 dere Vand i den arktiske Zone. 



27. Nymphon macrum. Wilson. 



(Pl. IX. Fig. 2. a— g). 



Nymphon utacntm, Wilson. Report on the Pycnogonida of 

 New England. United States Commission of Fish and 

 Fisheries. Report for 1878. p. 487, Pl. IV. figs. 

 21 -23. 



— G. 0. Sårs, Pycnogonidea borealia & 

 aretiea, No. 27. 



Artseharacter. Legemet særdeles spinkelt, med tynde 

 og forlængede Lemmer. Hovedsegmentet omtrent saa langt 

 som de 3 følgende Segmenter tilsammen, Halsen meget smal, 

 Pandedelen stærkt udvidet. Øieknuden noget ophoiet og 

 afstumpet i Enden. Snabelen af Hovedsegmentets Længde. 

 smalt cylindrisk. Saxlemmerne særdeles spinkle, forholdsvis 

 kortere end hos N. elegans, Skaftet ret, med nogle længere 

 Borster i den ovre Kant, Haanden af Skaftets Længde, 

 meget smalt. Fingrene længere eud Palmen, begge udtrukne 

 i en yderst tynd og stærkt indboiet Spids, Tænderne i 

 Inderkanten af den ubevægelige Finger lange og tynde, af 

 ulige Længde. Folerne overordentlig smækre, 2det Led 

 næsten dobbelt saa langt som 3die, sidste Led kortere og 

 betydelig smalere end 4de. begge tilsammen længere end 

 3die. De falske Fodder hos Hannen '/ 4 længere end 

 Legemet, 5te Led stærkt forlæuget, Randtornerne bredt 

 lancetformige og regelmæssigt saugtakkede i Kanterne. Gang- 

 fødderne ualmindelig spinkle og besatte med spredte Haar, 

 næsten 5 Gange længere end Legemet, 2det Lægled stærkt 

 forlænget og overordentlig tyndt. mere end 4 Gange længere 

 end det terminale Afsnit, Fodleddet kortere end Tarsal- 

 leddet. begge tynde og lineære, med smaa haarformige 

 Torner i Kanterne. Endekloen halvt saa lang som Fod- 

 leddet. Bikloerne ualmindelig store. -/>, saa lange som selve 

 Kloen. De ydre Ægmasser smaa. men med meget store 

 Æg. Legemets Længde 8"""; Spandvidde 85""". 



Den norske Nordharsexpedition, G. 0. Sms: Pycnogonidea. 



the utbers in the vicinity of Beeren Eiland and Spitzbergen; 

 depth from 148 tu 743 fathoms. I have also had an op- 

 portunity of examining divers specimens from the Kara 

 Sea, tåken in 3 different localities on Nordenskjolds Expe- 

 dition. 1-875 and 187G; depth from 40 to 70 fathoms. The 

 specimens examined by Dr. Hansen [were likewise from the 

 Kara Sea. 



Distribution. Aeeording to a written communication 

 from Dr. Hansen, the species occurs as far north as the 

 Greenland Sea. Th. Holm having tåken it (1886) in lat. 

 72° 40' N., long. 57" 15' W.; depth 118 fathoms. The ani- 

 mal must unquestionably, therefore, be regarded as a genuine 

 Arctie form. It was tåken, it is true, on the North-Atlantic 

 Expedition as far south as the 63rd parallel of latitude; 

 but it is to be reinarked that it occurred there only at a 

 very considerable depth, in the cold area, where the con- 

 ditions agree approximately with those distinguishing shal- 

 lower waters in the Arctic Zone. 



27. Nymphon macrum, Wilson. 



(Pl. IX, fig. 2, a-g). 



Nymphon macrum, Wilson, Report on the Pycnogonida of 

 New England. United States Commission of Fish and 

 Fisheries, Report for 1878, p. 487, Pl. IV, figs. 

 21—23. 

 — — G. 0. Sårs. Pycnogonidea borealia & 



arctica, No. 27. 



Speeific Characters. Body exceedingly slender, with 

 thin and elongated limbs. Cephalic segment about as long 

 as the 3 following segments tåken together, neck very 

 narrow, frontal part greatly expanded. Oculiferous tubercle 

 somewhat elevated. aud blunted at the extremity. Pro- 

 boscis same length as the cephalic segment, narrow cyl- 

 indric. Chelifori exceedingly slender. relatively shorter 

 than in N. elegans, seape straight, with a few long setæ 

 on the upper edge, hand the length of scape, very narrow, 

 fingers longer than the palm, both drawn out to an exceed- 

 ingly thin and strongly incurvate point, teeth on the inner edge 

 of the immobile finger long and thin, unequal in length. Palpi 

 remarkably slender, 2nd joint almost twice as long as the 3rd, 

 last joint shorter and considerably more slender than the 

 4th. both tåken together longer than the 3rd. False legs in 

 the male one-fourth longer than the body, 5th joint greatly 

 elongated, marginal spines broad-lanceolate and regularly 

 serrated on the edges. Ambulåtory legs uncommonly slim 

 and beset with scattered hairs, almost five times as long as 

 the body, 2nd tibial joint greatly elongated and remarkably 

 thin, more than 4 times longer than the terminal section. 

 propodal joint shorter than the tarsal joint, both thin and 

 linear, with small capilliform spines on the edges, terminal 

 claw half the length of the propodal joint, auxiliary claws 

 uncommonly large, two-thirds of the length of the claw 

 itself. Outer egg-masses small, but with very large ova. 

 Length of body 8"""; extent 85""". 



12 



