BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 27. AFD. IV. N:0 8. 09 



Length of largest spec: 28 mm. A specimen which I 

 dredged in 1894 in Smith Sonnd, measured 33 mm. (Ohlin, 

 1. c. p. 9). 



41, Mysis mixta LiLLJEBORG. 



1852. Mj'sis mixta LiLLJEBORG, Hafs-Crust. vid Kullaberg etc, 1. c. 



p. G. 

 18G1. » latitans Kröyer, Mysidffi, 1. c. p. 30, tab I, fig. 4 a — b. 

 1870. » mixta G. O. Särs, Carcinol. Bidr. etc, 1. c III, p. 76. 



tab. XXXIII. 



Localities: 

 in 1900: 



stat. 17. East Greenland, Mackeuzie Bay, N. of Kaiser Franz Joseph 

 Fiord, depth 12—3.5 m., raud, l/VIII— 3/VIIl, four spec 

 » 23. ibidem, depth 3 — 10 m., mud and sand with Laminarise, 

 11 /VIII, several spec. 



This species was first described by Lilljeborg from spec- 

 imens obtained in Öresund. Nine years afterwards Kröyer 

 redescribed it as 3Iysis latitans af ter specimens from Green- 

 land ; but, as Särs has pointed out, both are indentical. The 

 species is very often to be found together with Mysis oculata, 

 which it closely resembles, but from which it is easily to 

 be distinguished by the pointed squamce antennarum, the 

 somewhat diiferent form of the incisure of the telson, and by 

 a lighter colour, the black star-formed spöts being here of 

 smaller size. 



Mysis mixta has been obtained off East and West Green- 

 land, New England as far south as Massachusetts Bay, Ice- 

 land, Lofoten Islands, and Finmarken. Although it is on 

 this account, to be regarded as an Arctic species, it occurs, 

 however, farther south, viz. in the interiör part of Christiania 

 Fiord, in Öresund, and in the Baltic. 



It seems to live in the Arctic in the same depths as the 

 preceding species, but, farther south, it dwells in deeper 

 water. Thus according to Smith, it has been obtained, off 

 the coasts of New England, only in depths varying from 20 

 up to 90 fathoms. 



Lenr/th of largest spec. 30 mm. 



7 



