139 



melig stort,' i Enden"noget skrant afkuttet Segment uden 

 Spor af Vedhæng. 



Farven er saavel hos Hunnen som Baunen blegt gul- 

 agtig; de i Hunnens Æggesæk indeholdte Æg hvidagtige 

 med et svagt rosenfarvet Skjær. 



Længden af Hunnen er •">""": af Hannen neppe niere 

 end 1""". 



clasping legs, of the same character as in the female. The 

 posterior division of the body consists of a single, rather 

 large segment, somewhaf obliqueh truncate at the extremity, 

 withoul a trace of appendages. 



Colour, alike in the female and the male, a pale yellow; 

 the eggs in the incubatory cavitj of the female whitish, 

 with a taiiit ius\ tinge. 



Length of female 5 "f male scarcely more than 



1""". 



Forekomst og Udbredning. Kt enkelt Exemplar at' 

 denne distincte Art. tilligemed den tilhørende Han. blei 

 under Expeditionens Iste Togt tåget i Havet udenforStor- 

 eggen (Stat. 31) fra et Dyb af 417 Favne. Exemplaret 

 fandtes fastheftet til Rygsiden af Porkroppen Ims et usæd- 

 vanlig stort Individ af Pseudomma roseum. 



Om Artens Udbredning kan selvfølgelig intet med 

 Bestemthed anføres. Da imidlertid den ovenomtalte Station 



tilkorer den kulde Area. er det rimeligt, at den er en 

 arktisk Fonn. 



Oecurrence and Distribution. — A single specimen 

 of this distinct species, together with the male, was brought 

 up. on the first cruise of the Expedition, in the open sea, 

 otf the Storeggen hank (Stat. :SI). from a deptb of 417 

 fathoms. This specimen was found attached to the dorsal 

 side of tlie anterior division of the l>od\ of an remarkably 

 large example of Pseudomma roseum. 



Respectinii the distribution of the spedes, nothingcan 

 of course be stated with certainty. Meanwhile, as the 

 Station at which the animal was tåken lies in the cold 

 area. it is most probably an Arctic form. 



Amphipoda. 



Tribus 1. Gammarina. 



Fam. 1. Lysianassidæ. 



Gen. 1. Socarnes, 1 Boeck. 1870. 

 Crustacea amphipoda borealia et arctica. 



31. Socarnes bidenticulatus. (Sp. Hate). 



.Pl. X IT. Fig. 1.. 



Lysianassa bidenticulata, Sp. Bate. Ann. & Mai;'. Xat. Hist, Ser. !. 

 T. I. pg. 362. 



Lysianassa nugax, Sp. Bate, Cat. Amphip. Brit. Mus., pg. li"'. Pl. X. 

 fig. '.. (non P 1 1 i 1 1 1 1 s i . 



Lysianassa Vahlii, Goés, ('rust. amphip. Spitsb. \n. •_' (es parte). 

 Ånonyx bidenticulatus, Miers, Sjiitsli. Crast. Ann. & Mag. Xat. Hist. 

 1877, pg. 136. 



Artscharaeteristik. Legemet ualmindelig hoit og 

 uoget opsvulmet, med de forreste Epimerer [over dobbelt 

 saa hoie som selve Kroppen. Hovedets Sidevinkler fcilspid- 



Amphipoda. 



Tribus 1. Gammarina. 



Fam. 1. Lysianassidæ. 



Gen. 1. Socarnes, 1 Boeck. 1870. 

 Crustacea amphipoda borealia ei arctica. 



31. Socarnes bidenticulatus. (Sp. Bate). 



.Pl. XII. fig. ln 

 Lysianassa bidenticulata, Sp. Bate, Ann. A. Mag. Vit. Sist., Ser. 3, 



Vol. i. p. :;ii-.'. 



anassa ><" : i<:.>\ Sp. Bate, Cat. Amphip. Brit. Mus. p. li"-. Pl. X. 

 fig. :; (non Phippsi. 

 Lysianassa fahlii, Groes, Crust. amphip. Spitsb. Ne. - (ex parte). 



Anonyx bidenticulatus, Miers, Spitsb. Crust. Ann. X Mai;. Xat. Hist.. 

 is;;, p. I3fi. 



Speciflc Character. — Body remarkablj high and 

 somewhat swollen, with anterior epimera more than double 

 the hfight of body. Lateral angles of headacute, prqjecting 



1 Jeg følger ber foreløbig den af Boeck foreslaaede Slægtsind- 



deling, skjøndt jeg er ai' den Mening, at man vede ire Revisionaf 



Familien vil finde det nødvendigt at reducere noget Slæjrternes Antal. 



1 1 retain for the present the generic subdivision proposed 1>> 



liueeU. ilniiigli. in im iw lu nt. a closer revision of the family will 



show the i I of slightlj reducing the number of genera 



L8 4 



