103 



nosen Tilnærmelse til det for A. baffini characteristiske 



l>i 



æede Udseende var at bemærke hos nogen af de her 



indsamlede Exemplarer. Miers opfører den vistnok des- 

 uagtet kun som en Varietet af A. baffini; men det synes 

 mig dog, at det Faktum, at den sch samme Form forekom- 

 mer paa en vidt adskilt Localitet i Nordhavet, i Forbin- 

 delse med de ovenanførte Data. taler stærkt til Fordel fol- 

 dens virkelige specifiske Forskjel fra A. baffini, hvorfor jeg 

 ogsaa tror her at burde opføre den som en distinct Art 

 under det af mig forst fofeslaaede Navn. 



Beskrivelse af Hunnen. Legemets Form er (se Pl. 

 IX. Fig. 22) omtrent som hos foregaaende Art, dog for- 

 holdsvis endnu uoget mere undersætsig. Dets Overflade 

 er noget ru, men ikke som hos A. baffini loddent, og de 

 for hin Art characteristiske dorsale Fortsatser mangler her 

 ganske eller er kun repræsenterede ved liclet fremspringende 

 rundagtige Kunder. 



Hovedet viser oventil istedetfor de 2 hoie koniske 

 Fortsatser, der udmærker foregaaende Art, kun en stump. 

 i- Midten noget fordybet Forhøining. 



Iste frie Forkropssegment er oventil fuldkommen glat, 

 hvorimod de 6 følgende hariMidten af Rygfladen en stump, 

 tvedelt Forhøining. Epimererne paa de ■'! sidste Segmenter 

 er som hos foregaaende Art stærkt udstaaende til Siderne, 

 men mindre skarpt tilspidsede. 



Bagkroppens 2 foresto frie Segmenter er fuldstændig 

 glatte, uden Spor af nogen dorsale Fortsatser. og heller 

 ikke paa Endes egmentets Rygflade bemærkes nogen saa- 

 daune. hvorimod der ved Basis af samme tindes til hver 

 Side en stump triangulær Sidefortsats. 



(linene er af et lignende Udseende som hos A. baffini, 

 store og fremstaaende, triangulært nyredannede og forsynede 

 med mørkt Pigment. 



Hvad Kroppens forskjellige Lemmer angaar, saa har 

 jeg ikke kunnet undersøge disse saa nøiagtigt, som jeg 

 kunde have ønsket, da det eneste foreliggende Exemplar 

 maatte skaanes. Alen de synes i alt væsentligt at ligne 

 samme af A. baffini. 



Det foreliggende Exemplar var en fuldt udviklet Hun 

 og havde sine 2det Par Følere tæt besatte med den nylig 

 af Brvstposen udkrøbne Yngel. 



Farven var meget bleg kjødfarvet, faldende mest i 

 det sule. 



Længden af det erholdte Exemplar var. uden at regne 

 Følerne, 35""». 



Forekomst og Udbredning. Det beskrevne Exemplar 

 optoges under Expeditionens Iste Togt i Havet udenfor vor 

 Vestkyst fra et Dyb af 412 Favne, indviklet i en de til 

 Bundskraben fæstede Svabberter. Stationen tilhører den 

 kolde Area og ligger paa Afheldet fra Havbankerne mod 

 det udenfor liggende store Havdyli. 



Som ovenanført blev den samme Fonn under den 

 Engelske Nordpol-Expedition med "Alert" og "Discovery" 



even in great abundance thoughout one locality, none of the 

 specimens there tåken having however exhibited the slightest 

 approximation to the peculiar spiky appearance characteristic 

 of A. baffini. Miers regards it indeed notwithstanding as a 

 variety of A. baffini; but, in my judgment, the fact of the 

 seif same form occurring in a widely different locality in the 

 Northern < (cean, together with the above-stated data. militates 

 strongly in favour of its true specific distinctness from A. 

 baffini: and hence I have seen tit to establish it as a sep- 

 arate species under the name I first suggested. 



Deseription of the Female. — The fonn of the body 

 (see Pl. [X, fig. 22) is a bont the same as that in the preceding 

 species. though comparatively still more thickset. Tts 

 surface is somewhat rough, but not. as in A. baffini. clothed 

 with hair; and the dorsal projections characteristic of that 



species are elltilely W a lltillfi - . or lepresented nielelv by small 



and but slightly protruding roundish knobs. 



The head exhibits above, in place of the 2 elevated 

 conical projections that distinguish the preceding species. 

 simply an obtuse prominence, somewhat depressed in the 

 middle. 



The Ist free segment is perfectly smooth above. whereas 

 the 6 succeeding segments have in the middle of the dorsal 

 surface an obtuse. bifurcate prominence. The epimera on 

 the last :; segments project, as in the preceding species. 

 very considerably toward the sides, but are less acutely 

 pointed. 



The 2 anterior free segments oi the abdomen are 

 perfectly smooth. without a trace of dorsal projections. nor 

 can anv sucli be observed on the dorsal surface of the 

 terminal segment, whereas at the base is seen on either 

 side an obtuse, triangular lateral projection. 



The eyes, of the same appearence as in A. baffini. 

 large and protuding, triangular-reniform, and furnished with 

 a dark pigment. 



As regards the various appendages of the body. I 

 have lacked opportunity to examine theni with the accuracj 

 I could have wished, the only specimen before me having 

 had to be very carefully handled, ln all essential characteri- 

 stics, however. they apparently resemble those in A. baffini. 



The specimen secuivd was a fully developed female. 

 and had the 2nd pair of antenna' thickly covered with 

 young" that apparently had just left the marsupium. 



The colour was an exceedingly light pink, with a 



distinct sliade of ycllow. 



Length of the specimen obtained — excluding the 

 antenna- — 35""". . 



Occurrence and Distribution. — The specimen de- 

 scribed was brought up, on the Ist cruise of the Expedi- 

 tion, off' the West Coast of Norway, from a depth of 412 

 fathoms, attached to one of the hempen tangles fastened 

 to the dredge. The Station lav in the cold area. on the 

 slope of the banks that shelve down to the great ocean 

 depths. 



As stated above. the same form was found on 

 the English North Pole Expedition with the -'Alert'" and 



