150 



meget tynd og sammensat af 6 Led. Bisvøben er aeppe 

 mere end halvt saa lang og 4-leddet. 



2det Par Følere (Fig. 4 b) er ubetydeligt længere end 

 Lste Par og har de 2 basale Led stærkt opsvulmede og 

 delvis skjulte ander Hovedskjoldet. Skaftets næstsidste Led 

 er noget udvidet mod Enden og temmelig rigeligt forsynet 

 med Børster, der her ligesom overalt paa Legemet er uci- 

 lierede. Svøben er tynd, 8-leddet. 



De 2 forreste Fodpar (Fig. 4 c) er indbyrdes fuld- 

 kommen af samme Bygning, temmelig kraftige, med Haan- 

 den af oval Fonn og Griberanden kort og noget skråa samt 

 bagtil begrændset af et tydeligt tandformigt Fremspring, ved 

 hvis Basis er fæstet en stærk Torn. 



De 2 følgende Fodpar har 3dieLed forholdsvis stort 

 og tæt børstebesat, de 2 sidste temmelig smaa. 



5te Fodpar har som hos de øvrige til denne Slægt 

 horende Arter Hofteleddet pladeformigt udvidet. de øvrige 

 Led succesivt afsmalnende og temmelig rigeligt børstebesatte. 



6te Fodpar er næsten dobbelt saa langt, med Hofte- 

 leddet næsten elliptiskt, de øvrige Led cylindriske med 

 spredte tornformige Børster; Endekloen tynd og lige. 



Sidste Fodpar er igjen meget kort. men har Hofte- 

 leddet særdeles stort, pladeformigt, med den bagre Rand 

 jevnt bueformigt bøiet og utydeligt saugtakket. Den øvrige 

 Del af Foden er neppe hengere end Hofteleddet og jevnt 

 afsmalnende. 



Sidste Par Halefødder (se Fig. 4 e) har den ydre 

 Gren stærkt forhenget og sylformigt tilspidset samt besat 

 med en Del simple Børster. Den indre Gren er meget 

 kort. neppe mere end ','. ; saa lang som den ydre. 



Halevedhænget (ibid.) er af aflang Form og ved et 

 smalt Indsnit kløftet lige til Roden i 2 symmetriske Halvdele. 

 Karven er hvidgraa. noget gjennemsigtig. 

 Længden overstiger neppe 5 1 //"". 



Forekomst og Udbredning. Nogle faa Exemplarer 

 af, denne distincte Art toges under Expeditionens 2det Togt 

 ved Sydkysten af Jan Mayen paa 15 — 20 Favnes Dyb. 

 Samme Art har jeg ogsaa tåget ved vor Kyst, nemlig i 

 Varangerfjorden. Den er vistnok at betragte som en arktisk 

 Form. 



non-ciliated bristles. The flagellum is somewhat shorter 



than the peduncle, very slender, and composed of (i artic- 

 ulations. The secondary flagellum is scarcely more than 

 half as long, and has 4 articulations. 



The 2nd pair of antenna: (fig. 4 //) are but very 

 little longer than the Ist pair. and have the 2 basal joints 

 greatly swollen, and in part covered by the cephalic shield. 

 The penultimate joint of the peduncle is somewhat dilated 

 towards the extremity, aud rather abundantly provided with 

 bristles, which here, as elsewhere on the body, are non- 

 ciliated. Tlie flagellum is slender, and composed of 8 ar- 

 ticulations. 



The 2 anterior pairs of legs (fig. 4 c) are perfectly 

 uniform in structure, rather powerful, with the hand of an 

 oval form and the palmar margin short and somewhat ob- 

 lique. as also posteriorly defined by a well-marked dentiform 

 projection, at the base of which occurs a strong spine. 



The 2 succeeding pairs of legs have the 3rd articula- 

 tion comparatively large and densely beset with bristles, 

 the 2 last rather small. 



The 5th pair of legs have, as in the other species 

 belonging to this genus, the basal joint lamelliform-dilated, 

 the remaining articulations successively tapering and rather 

 abundantly furnished with bristles. 



The 6th pair of legs are well-nigh double the length, 

 with the basal joint almost elliptic in form. the remaining 

 articulations cylindric, with scattered spiniform bristles. 

 Terminal claw slender and straight. 



The last pair of legs, again, are very short. but have 

 the basal joint exceedingly large, la.nielliform. with the 

 posterior margin uniformly arched and indistmctly serrate. 

 The remaining portion of the leg is scarcely at all longer 

 than the basal joint, and tapers gradually. 



The last pair of cauclal stylets (see fig. 4 e) have 

 the outer branch very considerably elongate and awlshaped- 

 acute. as also beset with a number of simple bristles. The 

 inner branch is very short. scarcely more than one-third 

 as long as the outer. 



The telson (ibid.) is oblong in form. and, by a narrow 

 incision, cleft to the base into 2 symmetrical halves. 



Oolour a whitish-grev. semi-translucent. 



Length scarcely exceeding 5 1 _. 



Oeeurrence and Distribution. — A few individuals 



of this distinct species were obtained on the 2nd cruise of 

 the Expedition, off the south-east coast of Jan Mayen, from 

 a depth of 15 — 20 fathoms. The same species I have 

 likewise tåken on the Norwegian coast. viz. in the Varanger 

 Fjord. It mav no doubt be regarded as an Arctic form. 



