Report on the Malacostraca, Pj'cnogonida and some Entomostraca. 



609 



711/2° N.—79^'2° N. (Duc d'Orléans 1907; 1. с p. 270 it is named 

 Bgthocaris Guilelmi Chevreux, but this must be a misprint for 

 Cyclocaris G., for in many other names in that paper there are 

 misprints. It has also been taken at the Lofoten Islands (Chevreux, 

 Bull. Soc. Zool. France, vol. 24, 1899) and by the Norwegian North- 

 Polar-Exp. (Sars 1900). 



Су amas mysticeti lives on Balaena mysticetus and is said to be 

 circumpolar arctic (Olilin 1895) like 



Cyamus monodontis on Monodon monoceros. 



Cyamus nodosiis also lives on Monodon and is recorded from 

 Umanak in W. Greenland (Miers 1880). 



Dajus mysidis on Mysis oculata has the same distribution as the 

 host (see above), but does not seem to occur N. of Siberia. 



4B. Mainly boreal 



Acanthephyra purpurea. 

 Pasiphaë tarda. 

 Parapasiphaë sulcatifons. 

 Hymenodora glacialis. 

 Gennadas elegans 

 Sergestes arcticus. 

 Thysanopoda acutifrons. 

 Meganyctiphanes norvegica. 

 Thysanoessa longicaudata. 



— inermis. 



Rhoda Raschii. 

 Nematoscelis megalops. 

 Gnathophausia zoëa. 

 Eucopia unguiculata. 

 — sculpticauda. 

 Hansomysis Fyllæ. 

 Boreomysis tridens. 



— arctica. 



— microps. 

 Longithorax fuscus. 

 Erythrops erythrophthalma. 

 Meterythrops picta. 

 Amblyops abbreviata. 

 Pseudomma roseum. 



— parvum. 



Mysis mixta. 



Plankton species. 



Lanceola Loveni. 



— serrata. 



— Sayana. 

 Vibilia Kroeyeri. . 

 Mimonectes Steenstrupii. 

 Hyperia medusarum. 



— galba. 

 Hyperoche medusarum. 

 Parathemisto oblivia. 

 Euthemisto compressa. 

 — bispinosa. 



Scina sp. 



Metacj'phocaris Helgæ. 

 Katius obesus. 

 Cypliocaris anonyx. 

 Eurytenes gryllus. 

 Paracyamus boopis. 

 Æga crenulata. 



— psora. 



— arctica. 



— ventrosa. 

 Munnopsis typica. 

 Munneurycope Tjalfiensis. 

 Eurycope cornuta. 

 Holophryxus Acanthephyræ. 



— Richardii. 



