34 



mere smækker Form. Paa Iste Par (Fig. 17) er der 

 dog den Forskjel, at Yderkanten af den ydre Gren 

 kun har, umiddelbart ovenfor den yderste Torn^ 

 3 Smaapigge, medens hos N. hipes hele denne Kant 

 er tæt og regelmæssigt pigget. 



De 2 Par rudimentære Halefodder (Fig. 18, 19) 

 viser ligeledes et Udseende, meget nær overens- 

 stemmende med samme hos denne Art, alene med 

 den Forskjel, at Tornernes Antal paa begge er noget 

 ringere. 



Farven er hos det levende Dyr hvidagtig, uden 

 nogen bemærkelig Pigmentering. Integiimeilterne er 

 tynde og gjennemsigtige, saa de indre Organer tem- 

 melig tydeligt skinner igjennem. 



Æggene i Klækkehulen er forholdsvis store og 

 af en meget bleg gulagtig Farve. 



Længden af den ægbærende Hun er kun 9 mm., 

 Størrelsen er altsaa betydelig ringere en hos N. hipes. 



Forekomst. Jeg har hidtil kun seet 3 Expl. af 

 denne Art, alle Hunner. De blev tagne til forskjel- 

 lige Tider paa 3 vidt adskilte Punkter af vor Kyst, 

 det ene ved Hvitingsø, udenfor Stavanger, det 2det 

 i Trondhjemsf jorden, og det 3die ved Lofoten. Ex- 

 emplarerne forekom paa alle 3 Steder i et Dyb af 

 fra 150 — 200 Favne og paa bled Lerbund. Arten 

 synes herefter at maatte betragtes som en udpræget 

 Dybvandsform, hvad der ogsaa kan sluttes af de 

 ufiildkomment udviklede Synsredskaber. Udenfor 

 Norge er den endnu ikke bleven observeret. 



are altogether of a somewhat more slender form. 

 In the 1st pair (fig. 17) there is, howevei', the diffe- 

 rence, that the outer edge of tlie outer branch has, 

 immediately above the outermost spine, only 3 small 

 spikes, whilst in N. hipes the whole of that edge is 

 closely and regularly spiked. 



The 2 pairs of rudimentary caudal feet (figs. 

 18, 19) likewise present an appearance very nearly 

 correspondent with those in that species, with the 

 difference only, that tlie number of spines on both 

 is somewhat smaller. 



The colour in the living state of tlie animal is 

 whitish, without any noticeable pigmentation. The 

 integuments are thin and transparent, so that the 

 internal organs are pretty distinctly visible through 

 them. The ova in the hatching cavity are relatively 

 large, and of a very pale yellowish colour. 



The length of the ovigerous female is only 9 

 mm. The size is thus considerably less than in 

 N. hipes. 



Distribution. I have hitherto only seen 3 spe- 

 cimens of this species, all females. They were taken 

 at different times, at 3 widely separated places off 

 our coast; the one at Hvitingsø, off Stavanger, the 

 2nd in the Trondhjemsfjord, and the 3rd at the Lo- 

 foten isles. The specimens were obtained, at all 

 the 3 places, at a depth of from 150 — 200 fathoms and 

 on soft clay bottom. It appears from this, that the 

 species must be considered as a distinguished deep- 

 water form, which may also be gathered from the 

 imperfectly developed visual apparatus. Out of Nor- 

 way it has not hitherto been observed. 



