64 



omvendt flaskedannede Form. Dets forreste Halvpart, der 

 indeholder Endeafsnittet af Tarmen, er af oylindrisk Form. 

 medens Endepartiet er stærkt afsmalnende og til hver Side 

 bevæbnet med 9 smaa Torner foruden de to noget større 

 fra Spidsen udgaaende (se fig. 3). 



De ydre Halevedhæng er kun ubetydelig længere end 

 det midterste og har Basaldelen eller Stammen særdeles 

 fcynd og forlænget samt i den indre Kant forsynet med smaa 

 Torner. Endegrenene (se Fig. 4) er ganske korte, neppe 

 halvt san lange som Stammen og indbyrdes omtrent af ens 

 Størrelse. Den indre er dolkformig og delt i 3 tydelige 

 Led. hvoraf det Iste er længst. Til den indre Kant af 

 denne Gren er fastet ialt 1<> korte Torner, hvoraf 4 til- 

 bører Iste. 3 ethvert af de 2 følgende Led. Sidste Led 

 gaar ud i en stærk tornformig Spids. Den ydre Gren er 

 noget smalere end den indre og som sædvanlig 2-leddet med 

 Basalleddet ganske kort. Endeleddet lineært og i den ydre 

 Kant samt ved Spidsen forsynet med nogle tynde Børster. 



Dyrets Farve var i levende Tilstand, navnlig 

 Forkroppen. blegt kjødrød. 



paa 



Længden af det erholdte Individ, maalt fra Spidsen 

 af Pandehornet til Enden af det midterste Halevedhæng, 

 er 18""". og Arten horer altsaa til de største af Slægten. 



Forekomst og Udbredning. Det beskrevne Exem- 

 plar blev under Expeditionens sidste Togt optaget i Bund- 

 skraben fra et Dyb af 12f> Favne i Havet lige i Vest for 

 Isfjorden paa Spitsbergen. 



Om Artens geografiske Udbredning kan selvfølgeligt 

 intet med Bestemthed anføres. Dog er man ifølge Finde- 

 stedets hoie nordlige Brede berettiget til at antage. at den 

 ligesom den nærstaaende D. spinulosa Heller, er en ægte 

 arktisk Form. 



slender, inverted bottle-shape form. Its foremost half, con- 

 taining the terminal section of the intestine. is cylindric. 

 whereas the terminal portion tapers abruptly, and. on 

 either side. is armed with 9 small spines. exclusive of 

 the two somewhat larger ones proceeding from the poiiit 

 (see fig. 3). 



The outer caudal appendages are but very little longer 

 than the telson. and have the basal part. or stem. exceedingly 

 slender and elongate, as also furnished along the inner 

 margin with small spines. The terminal branches (see fig. 4) 

 are quite short. scarcely half as long as the stem, and well- 

 nigh uniform in size. The inner is dagger-shaped. and divided 

 into 3 distinctly defined joints, of which the first is longest. 

 To the inner margin of this branch are attached 10 short 

 spines. 4 of which belong to the 1 st joint and 3 to each of the 

 2 succeeding ones. The last joint juts out as a strong. 

 spiniform point. The outer branch is a little more slender 

 than the inner, and. as usual. two-jointed, with the basal 

 articulation quite short. the terminal joint linear, and furnished 

 along the outer margin, as also at the point. with a few 

 slender bristles. 



The colour of the animal in a living 

 especially on the anterior division of the body 

 red, or pink. 



The length of the specimen tåken, measured from the 

 tip of the rostrum to the extremity of the telson. is 18""". 

 and the species ranks therefore among the largest of the 

 genus. 



Oecurrence and Distribution. - - The specimen de- 

 scribed above was brought up in the dredge. on the last 

 cruise of the Expedition. from a depth of 1 25 fathoms. in 

 the open sea. due west of lee Sound. Spitzbergen. 



As regards the geographical distribution of the species, 

 nothing can of course be stated with certainty. Judging. 

 however, from the high northern latitude of the locality in 

 which the animal was found. we are warranted in regarding 

 it. equally with the species D. spinulosa Heller, as a true 

 Arctic form. 



state, more 

 was a light- 



Ordo Isopoda. 



Trib. 1. Chelifera. 



lam. 1. Apseudidæ. 



G-en. Sph.M-aims, Norman. M. S. 



(G. 0. Sårs. RevisioE af Gruppen Isopoda chelifera). 



Slægtscharacteristik. Legemet bagtil afsmalnende 

 med skarpt afsatte Segmenter, hos Hannen betydelig smæk- 

 rere end hos Hunnen. Hovedsegmentet stort, oventil jevnt 



Ordo Isopoda. 



Trib. 1. Chelifera. 



Kain. 1. Apseudidæ. 



Gen. Spli.WEtpns. Norman. M. S. 



[G. < '. Surs. Revision iil Gruppen Isopoda chelifera). 



Generie Character. — Body tapering posteriorly. with 

 sharply defined segments, and much more slender in the male 

 than in the female. Cephalic segment large, uniformly arched 



