BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 27. AID. lA'. N:o 8. 85 



was obtained during the Norwegian North Atlantic Expedi- 

 tion at two stations far distant from each other, but both 

 helonging to the cold area, the one being situated off Stor- 

 eggen NW. oif Cape Stadt and the other SW. of Jan Mayen. 

 It also occurs off West Greenland, Karajok Fiord (Van- 

 höffen). 



Its vertical range is from 250 up to 7(i3 metres, and it 

 is nndoubtedly of Arctic origin. 



Lcngfh of largest niale 23 mm. 



» » » female .... 20 » . 



Mysideis G. O. Särs 1869. 



In his 'Unders0gelser över Christianiatjordens Dybvands- 

 fauna», Särs established this genus to receive a Mysidean 

 obtained by him at greät depths in the Christiania Fiord, 

 and first named Mysis insiguis by the same author in »Be- 

 retning om en i Sommeren 1863 foretagen zoologisk Heise i 

 Christiania Stifta The genus comes nearest to Mysldopsis, 

 although deviating from that genus in the structure of man- 

 dibles and of the second pair of maxillse. Sars added, then, 

 to the genus in 1879, in the third part of his »Carcinologiske 

 Bidrag til Norges Fauna , another form already. described in 

 1863 by GoÉs as Mpsis grandis and occurring rarely off the 

 coasts of Finmarken and Spitzbergen.^ No other species 

 liave as yet been described. 



39. Mysideis grandis (GoÉs). 



1H(;4. Mysis grandis GoÉS, Crust. decap. podophth. mar. Suecise etc, 



1. c. p. 176. 

 1879. Mysideis » G. O. Sars, Carcinol. Bidrag til Norges Fauna 



etc, III, p. 10(j, tab. XLI— XLII. 

 ]«92. Rtiloraysis > NORMAN, British MysidpP etc, 1. c p. 148. 

 1900. » Stebbing, Arctic Crustacea etc, 1. c p. 11. 



• In 189:;i, Norman made this the typc of a new genus, for which lie 



proposes the name Stilomysis, but without giving any detailed description of 



the genus. It seems to me very uncertaiu how far he is right in estali- 

 lishing this genus. 



