BIHAN(i TILL K. SV. VF/r.-AKAD. fLWDL. I5AND 26. AFI). IV. .\:o 12. 5 



expedition. Tlie three orders treated on iii the present paper 

 were represented formerly, the Leptostraca hy Nohnlia hipvs 

 (O. Fabricius), and tlie Isojioda only ])y the parasitic Gyfjc 

 hippnlytes KrOyer, Vlnijxus ahdonrinalis- Kröyer, and Dajus 

 iiii/sidis Kröyer, whereas tlie Cumacea had no representatives 

 at all. By the Swedish Arctic Expedition of 1899, the Iso- 

 podan fanna of East Greenland now consists of the following 

 species. besides those three already referred to, viz. Spliyra- 

 jms serratus G. O. Särs, Lvptocinathia lom/iretnis (Lilljeborg), 

 ('(ihitliura hrachiafa (Stimpson), Arcturus liystrix G. O. Särs, 

 Munnop.sis typica M. Särs, Ilyarachna Bergcndali n. sp., and 

 the Camacean fauna of Leucon nasicus (Kröyer), Leucon nasi- 

 rnides LiLLJEBoRc;, IJiffStyJis Goodsiri (Bell), D. llathhii 

 (Kröyer), I), spimdosa Heller and D. Ediuardsii Kröyer. Of 

 these sixteen species in all. Xehalia Inpes, CalafJiurf( hrarhi(it((, 

 MiUDwpsis typico, JDitistyJ/s Goodsiri, and D. Edwardsii seeni 

 to he the most eomnion, which is not snrprising as they are 

 widely distribnted within the Arctic ocean and, except the 

 tirst one, may be regarded as circumpolar. 



]jike the fanna of East Greenland, that of the sea east 

 of Spitzbergen was entirely nnknown nntil 1887, when Dr. 

 W. Kukexthal and Dr. AValther visited those regions on 

 board a Norwegian sealer. The collections bronght home by 

 them were rather large. The Aniphipoda and the Isopoda 

 are worked np by Vosseler; of Isopoda he enumerates only 

 two, viz. A}wcus rohusfns G. O. Särs and Synidofhea uodiilosa 

 (Kröyer). In the snmmer of 1898 those seas ronnd King 

 ( 'harles Islands were explored by no less than three scientific 

 expeditions, viz. the Swedish Arctic Expedition on board 

 :)Antarctic», the German »Helgoland> Expedition, and that of 

 the Prince of Monaco on board the Princesse Alice.. By 

 these a great gap in our knowledge ot that fauna will, 

 withont donbt, be filled, when all the collections of the resp. 

 expeditions have been worked np. ]\[y list of Isopoda and 

 Cumacea which of conrse must be considered a very provi- 

 sionally one, coniprises the following species: Calathnra hra- 

 rliiata (Stimpson), Giiathia (ionyata (Kröyer), Synidothea 

 biciisjnda (Owex), Janira tricornis (Kröyer), Mimnopsis typica, 

 31. Särs, Eurycopr yiyantea G. O. Särs, IJyarachiia hirticcps 

 G. O. Särs, Ilyarachtta Brri/rudali n. sp., Phryxiis abdoni/nalis 

 (Kröyer), Leucon Nafhorsfl n. sp., EudorcUa emarginata 



