io 



Gangfødderne (se Fig. 2) er spinkle og forlængede, 

 omtrent 5 Gange længere end Legemet, og besatte med 

 korte, spredte Haar. 2det Hofteled er over dobbelt saa 

 langt som de 2 øvrige tilsammen, Laarleddel omtrent x / 3 

 længere end Hoftepartiet og temmelig opsvulmet bos Hunnen. 

 Iste Lægled er kjendelig længere end Laarleddet, og 2det 

 do., som sædvanlig, det længste, meget tyndt og noget af- 

 smalnende mod Enden. Det terminale Parti af Foden er 

 stærkere udviklet hos denne Art end hos de fleste øvrige 

 og omtrent halvt saa langt som 2det Lægled. Tarsalled- 

 det (se Fig. 2 g) er af lineær Form og adskilligt længere 

 end Fodleddet. Dette sidste afsmalnes successivt noget 

 mod Enden og er i Inderkanten besat med tynde, næsten 

 børsteformige Torner, hvoraf de 4 — 5 inderste pleier at 

 være længst. Endekloen er særdeles stærkt forlænget, 

 næsten af Fodleddets Længde, leformigt krummet ved 

 Basis og ender i en sylskarp Spids. Bikløerne er derimod 

 overordentlig smaa. neppe mere end l / 10 saa lange som 

 Endekloen. 



De ydre Ægmasser (se Fig. 2 b) er forholdsvis ikke 

 synderlig store, uregelmæssigt kugleformige. hvorimod de 

 i dera indeholdte Æg er større end sædvanligt. De er 

 sædvanligvis fæstede omkring 4de Led af de falske Fødder, 

 dog ikke sjelden til 5te Led ; i enkelte Tilfælde er de til- 

 stede i dobbelt Antal paa hver af disse Lemmer. 



Forekomst. Et enkelt Exemplar af denne Art blev 

 under Nordh. Expeditionens sidste Togt tåget omtrent 

 midtveis mellem Finmarken og Beeren Eiland (Stat. 290) 

 paa 191 F. D. Jeg har imidlertid havt Anledning til at 

 undersøge en hel Del Exemplarer af samme Art, indsam- 

 lede under Nordenskjølds Expedition 1875 paa forskjellige 

 Punkter i det kariske Hav; Dybden fra 20 til 60 Favne. 



Udbredning. Arten er først beskeven af Hoek fra 

 Barents Soen efter et enkelt mindre vel conserveret Exem- 

 plar og er senere af Dr. Hansen anført fra det kariske 

 Hav. Andetsteds er den ikke bleven observeret; men de 

 ovenanførte Lokaliteter er nok til at stemple den som en 

 a^gte arktisk Form. 



22 Nymphon longitarse, Krøyer. 



(Pl. VII. Fig. 3, a-h). 



Nymphon longitarse, Krøyer. Nat. Tidsskr. N. R. Bd. 1. 

 p. 112. 



Idem, Gaimarcfs Voyage en Scan- 

 dinavie, Pl. 36, fig. 2, a — f. 

 _ _ Wilson, Traus. Conn. Acad. Vol. V. 



p. 19, Pl. VIL fig. 2, a— h. 

 — — Idem, United States Commission of 



Fish and Fisheries, Report f. 1878, p. 489, Pl. VI, 

 fig. 30-31. 



The ambulatory legs (see fig. 2) are slender and 

 elongated, about 5 times longer than the body, and beset 

 with short, scattered hairs. The 2nd coxal joint is more 

 than twice as long as the 2 other ones tåken together; the 

 femoral joint is about J / 3 longer than the coxal part. and 

 is rather swollen in the female. The Ist tibial joint is ap- 

 preciably longer than the femoral one, and the 2nd is, as 

 usual, the longest, very slender. and tapers somewhat towards 

 the extremity. The terminal part of the leg is more fully 

 developed in this than in most of the other species, and 

 is about half the length of the the 2nd tibial joint. The 

 tarsal joint (see fig. 2 g) is linear in form and considerably 

 longer than the propodal joint. The latter joint diminishes 

 successively, somewhat, towards the end, and is beset on the 

 inner edge with delicate, well-nigh setiform spines, of which 

 the 4 or 5 innermost are usually the longest. The terminal 

 claw is particularly elongated, almost the length of the 

 propodal joint, faleiformlv arcuate at the base, and termin- 

 ates in a point as sharp as an awl. The auxiliary elaws. 

 on the other hand. are remarkably small, scarcely more 

 than '/,,, of the length of the terminal claw. 



The outer egg-masses (see fig. 2 b) are, relatively. not 

 verv large, irregularly globular in form, whereas the ova 

 they contain are larger than usual. They are generally 

 adherent round the 4th joint of the false legs, not in- 

 frequently, however, to the 5th joint; in some cases they 

 are present in double numbers on each of those limbs. 



Occurrenee. A single specimen of this species was 

 tåken on the last cruise of the North Atlantic Expedition, 

 about midway between Finmark and Beeren Eiland (Stat. 

 290), at a depth of 191 fathoms. I have however, had the 

 opportunity of examining a great many specimens of the 

 same species collected on Nordenskjold's Expedition in 1875, 

 from various localities in the Kara Sea; depth 20 to 60 

 fathoms. 



Distribution. The speciee has been first described by 

 Hoek. from a single, not very well preserved, specimen tåken 

 in Barenfs Sea, and it has sinee been recorded by Dr. Hansen 

 from the Kara Sea. It has not been observed elsewhere, 

 but the localities given above suffice to establish it as a 

 true Arctic form. 



22. Nymphon longitarse. Kroyer. 



.Pl. VII, fig. 3, a— h). 



Nymphon longitarse, Kroyer, Nat. Tidsskr. N. R. Bd. 1. 

 p. 112. 

 — — Kroyer, Gaimard's Voyage en Scan- 



dinavie, Pl. 36, fig. 2, a— f. 

 _ — Wilson, Trans. Conn. Acad. Vid. V. 



p. 19. Pl. VII. fig. 2, a— h. 



— Idem, United States Commission of 

 Fish and Fisheries. Report for 1878, p. 489, Pl. VI. 

 fig. 30—31. 



10* 



