224 



øvrige Led tilsammen og af oval Form. med den forreste 

 Raml jevnt buet, den bagre næsten lige og forsynet med 

 :; smaa tandformige Fremspring, hvoraf de 2 yderste staar 

 tæt sammen og ved et betydeligt Mellemrum er skilte fra 

 del øverste. Endekloen er særdeles stærk, leformig krummet, 

 og lægger sig. naar den indbøies, med Spidsen ind mod 

 det øverste af de ovenomtalte tandformige Fremspring. 



De til 3die og 4de Segment fæstede Gjelleblade er 

 forholdsvis smaa og smale og rager fortil og bagtil noget 

 ml over Brystposen. 



De 3 bagre Fodpar er kraftigt udviklede og tiltager 

 successivt noget i Længde bagtil. Sidste Led er som sæd- 

 vanlig subcheliformt eller danner et Slags Haand, med en 

 Afsats ved Basis i den forreste Kant. mod hvilken Ende- 

 kloen kan indbøies. 



Hannen (se Fig. 3 x) er af forholdsvis spinklere og 

 mere langstrakt Form end Hunnen og har de 4 forreste 

 Segmenter næsten fuldkommen glatte eller kun med yderst 

 svage Spor af de Knuder, som lindes her hos Hunnen, hvor- 

 imod de 3 bagerste Segmenter viser en lignende Bevæbning. 

 At' Segmenterne er navnlig de 2 forreste kjendelig stærkere 

 forlængede end hos Hunnen, dog saaledes, at det jindbyrdes 

 Forhold mellem begge er temmelig uforandret. 



Iste Par Folere skiller sig fra samme hos Hunnen 

 derved, at Skaftets Led er noget fortykkede paa Midten, 

 sammentrykte og i Kanterne fint cilierede. 



2det Fodpar. der ellers pleier at være meget forskjel- 

 ligt hos begge Kjøn, er her næsten noiagtig af samme Ud- 

 seende som hos Hunnen, alene med den Forskjel, at Basal- 

 leddet er noget mere forlænget. Derimod udspringer det 

 ikke som hos Hunnen fra det forreste Parti af 2det Seg- 

 ment, men kjendeligt bag Midten af dets Længde. 



Legemet er hos begge Kjon temmelig gjennemsigtigt, 

 gulagtigt, og navnlig hos Hunnen marmoreret med større 

 uregelmæssige mørkebrune Shatteringer. der delvis danner 

 afbrudte Tværbaand over Kroppen. 



Længden af den ægbærende Hun er 12""". Hannen 

 er noget større og opnaar en Længde af 17""". 



seetion. or hand. is prodigiously developed. being longer 

 than all the otlier joints tåken togetlier. oval in form. with 

 the anterior margin evenly arched* the posterior almost 

 straight and furnished with 3 small dentiform projections, 

 of which the 2 outer ones occur close together. separat ed 

 by a considerable interspace from the uppermost. The 

 terminal claw is remarkably powerful, falciform. and im- 

 pinges, when bent in. against the uppermost of the aforesaid 

 dentiform projections. 



The branchial lamellæ attached to the 3rd and 4th 

 segments are comparatively small and thin. projecting, both 

 anteriorly and posteriorly, over the marsupium. 



The 3 posterior pairs of legs are powerfully devel- 

 oped. and increase somewhat in length posteriorly. The 

 last joint is, as usual. subcheliform, and forms, as it were. 

 a hand, with a ledge at the base on the anterior margin, 

 against which the terminal elaw admits of being bent in. 



The Male (see fig. 3 x) has comparatively a more 

 slender and elongate form than the female, the 4 anterior 

 segments being almost perfectly smooth. or exhibiting hut 

 very faint traces of the tubercles observed there in the 

 female, whereas the 3 hindmost segments are furnished with 

 a similar armature. Of the segments, the 2 foremost occur 

 in particular more produced than in the female. vet in such 

 manner that the relation between the hvo is very mucli 

 the same. 



The Ist pair of antenna' differ from those of the female 

 in the joints of the peduncle being somewhat incrassated 

 along the middle. compressed, and finely ciliated on the edges. 



The 2nd pair of legs. which. as a rule, are very dif- 

 ferent in the two sexes. have almost exactly the same appear- 

 ance as in the female. the only deviation consisting in the 

 basal joint being a trifle more elongate. Tliis articulation 

 dors not however originate from the foremost part of the 

 2nd segment as in the female, but appreciably posterior to 

 its longitudinal middle. 



The body is in both sexes well-nigh translucent, yel- 

 lowish, and. more particularly in the female. relieved with 

 large, irregular, dark-brown marbled shadings, that form in 

 part transversal bands across the body. 



Length of tire ovigerous female 12""". The male is 

 somewhat larger. attaining a length of 17""". 



Forekomst. Nogle faa Exemplarer af denne Art blev 

 under Expeditionens sidste Togt tagne paa 2 forskjellige 

 Stationer. den ene (Stat. 315) beliggende i Havet NV af 

 Béeren Eiland, den anden (Stat. 336) mer Sydpynten af 

 Spitsbergen. Dybden fra 70 til 180 Favne. Exemplarerne 

 fandtes fastsiddende paa Hydroider optagne med Bundskraben 

 fra klippefuld Bund. 



Skjøndt ingen af disse Stationer egentlig tilhører den 

 kolde Area. er man dog af Stationernes hoie nordlige Brede 

 berettiget til at betragte Arten som en arktisk Form. 



Occurrence. — A few examples of this species were 

 tåken on the last cruise of the Expedition. at 2 different 

 Stations, the one (Stat. 315) north-west of Beeren Eiland. 

 the other (Stat. 336) near the southern extremity of Spitz- 

 bergen: depth ranging from 70 to 180 fathoms. The speci- 

 meiis were found attached to Hydroids. brought up in the 

 dredge from a rocky bottom. 



Though neither of the said Stations strictly belonged 

 to tlie cold area. their high northern latitude warrant our 

 assuming tin- species to he an Arctic form. 



