13 



38. Boreophausia inermis. (Kroyer). 



Ogsaa for denne Funn har jeg været nødt til at op- 

 stille en egen Slægt, da den har vist sig at være generisk 

 forskjellig saavel fra Slægten Thysanopoda som fra Slægten 

 Euphausia, hvortil jeg tidligere har henført den. To andre 

 nordiske Euphausiider hører ind under samme Slægtstype, 

 nemlig Thysanopoda neglecta Kroyer og Th. RaschiiM. Sårs, 

 muligens ogsaa TJk longicaudata Kroyer. 



Exemplarer at' den her omhandlede ved vore nordlige 

 Kyster meget almindeligt forekommende An toges under 

 Expeditionen ved Jan Mayen og i Havet mellem denne 

 og Island. Den er forst beskrevet af Kroyer fra Grønland 

 og ogsaa noteret fra Spitsbergen og Nbrdamerikas Østkyst, 

 hvorfor den utvivlsomt er at betragte som en ;egte arktisk 

 Form. 



39. Thysanoéssa tenera. G. 0. Sårs. 



Oversigt over Norges Crustaceer I. 



Denne lille zirlige, af mig først i Varangerfj orden 

 fundne Art observeredes under Expeditionen paa 4 for- 

 skjellige Stationer i det aabne Hav mellem Norge og Jan 

 Mayen. Alle Exemplarer erholdtes ved Hjælp af Over- 

 fladenettet. 



Fam. Mysidæ. 



40. Boreomysis tridens, Gr. 0. Sårs. 



Exemplarer af denne Art toges under Expeditionens 

 sidste Togt i Vestfjorden (Stat. ,255) paa 341 Favnes Dyb. 

 Foruden i Vestfjorden, hvor jeg forst fandt den. er den 

 kun observeret i Trondhjemsfjorden af Conservator Storm, 

 ligeledes paa betydeligt Dyb. Ganske nylig har jeg ogsaa 

 truffet den i Foldenfjord paa lignende Dyb. 



41. Boreomysis nobilis. G. 0. Sårs, n. sp. 



Se i-t.. Afsnit, pg. 54, Pl. V. Fig. 22—28. 

 Pindested. Stat. 362. 



38. Boreophausia inermis. (Kroyer). 



For this fonn, too, I have had to institute a separate 

 genus, the animal having proved generically distinct alike 

 from the genus Thysanopoda and the genus Euphausia, 

 to the latter of which I had previously referred it. Two 

 other Northern Euphausiidans belong to the same generic 

 type, viz. Thysanopoda neglecta Kroyer and Th. Baschii 

 M Sårs, possibly too Tli. longicaudata Kniver. 



Examples of the species treated of here, a very com- 

 nion one off the northern shores of Norway, were tåken 

 on the Expedition at Jan Mayen and in the tract of ocean 

 extending between that island and Tceland. The species 

 was first described by Kroyer, from Greenland. and has 

 also been recorded from Spitzbergen and the east eoast of 

 North Americaj hence, it must unquestionably be regarded 

 as a true Arctic form. 



39. Thysanoéssa tenera, G. O. Sårs. 



Oversigt ever Norges Crustaceer I. 



This diminutive, graceful species, discovered by the 

 author in the Varangerfjord, was met with on the Ex- 

 pedition. at 4 different Stations, in the open sea. between 

 Norway and Jan Mayen. All of the specimens were ob- 

 tained in the surface-net. 



Fam. Mysidæ. 



40. Boreomysis tridens, G. 0. Sårs. 



Examples of this species were tåken, on the last 

 cruise of the Expedition. in the Vestfjord (Stat. 255), at a 

 depth of 341 fathoms. Exclusive of the Vestfjord, where 

 I first observed it, the animal has been tåken in the 

 Trondhjemfjord only. by Mr. Storm, also at a considerable 

 depth. Quite recently I have also met with the species in 

 the Foldenfjord. at similar depths. 



41. Boreomysis nobilis, G. O. Sårs. n. sp. 



See Part I. p. 54, Pl. V, figs. 22—28. 

 Locality. — Stat. 362. 



