BIHANG TILL K. SV. YET.-AKAD. HANDL. BAND 26. AFD. IV. N:0 12. 23 



185S. Aega psoni LtJTKEN, Noglc iJeniaerkniiiger ftc. 1. c. jt. t)5, 



tab. 1 A. tig. 9—11. 

 1870. ; Psora 80HIÖDTE & Meinert, Syiiihohc etc. 1. c. ]^. ;-537, 



tal). 7. tig. 5—6. 

 1S97. psora G. O. Sars, Isopoda, ]). .59. pl. 24. 



Two yt)ung somewhat incomplete specimens of this well- 

 known Isopod I got on the body of au »Haakjerriiig», Scyni- 

 nus microccphalufi, caught in Recherche Bay, West Spitz- 

 bergeii, 6 VII 1898. 



About its geograpliical distribution Scuiödte & Meinbrt 

 say in their excellent monograph of the family Ci/mothoidce : 

 »Maria omnia borealia iuter Europaui et Americam septen- 

 trionalem, a Groenlandia usque ad Cimbriam, lial)itat vul- 

 garis, Scymnum microceplialuni et Gradum Morliuam infestans; 

 altum prsefert mare, ut Aega crenulata, qua tanien uiulto 

 frequentior.' 



In fact, it is met with verv often in the northern parts 

 of the North Atlantic ocean and its continuation in the Arctic 

 Sea. Thus, it has been obtained at "VVest Greenlaud (Lutken), 

 Atlantic coast of North America (Harger), Spitzbergen (Miers), 

 Iceland (Scuiödte & Meinert), Coast of Norway (G. O, Särs), 

 British Isles (Sp. Bate & AA^estwood), Skagerak and Kattegat 

 (Schiödte & Meinert). It is hardly to l)e considered as a 

 circumpolar form as it is not yet mentioned froui the Sibe- 

 rian Sea or from the North American Polar Archipelago. 



Length 17 mm., breadth 9 mm. 



Fam. Cirolanidae. 



Cirolana Leach l.st8. 

 Cirolana borealis Lilljeborg. 



1852. Cirolana borealis LiLLJEBORG, Norges Crustacécr, ÖtVers. Vet. 



Förli. Stockbolni, arg. 8, 1H51. p. 19. 

 1.S68. ; s])inii)es Bate & Westwood, Brit. Sess. Criist. Vol. 



2, p. 299. 

 1890. borealis Hansex, Cirolaiiida^ etc, 1. c. ]>. 821, tab. 



1, tigg. 1 — 1 v. 

 1897. ])oroalis SaRS, Isopoda, i>. 70, pl. 29. 



This species which may l)e regarded as the type o± the 

 great family CIrolanidce, was obtained at: 



