BIHANG TILL K. SV. VET.-AKAD. IIANDL. BAND 27. AFD. IT. N:0 8. 77 



mentioned below was described as the type of the genus. 

 Another species, Fseudomma affinc, was also for the first 

 tillie recorded in the same memoir. In 1879, Smith farther 

 enlarged the genus with Fseudomma fruncatum from the Grulf 

 of St. Lawrence, and, in his Challenger Report, Saks described 

 two new species, viz. Fscudomnia Sarsii Willemoes-Suhm 

 M.S. and Fseudomma austrah; the former was dredged off 

 Kerguelen Islands and at a station as far south as lat. 65° 

 42' S., and the latter in Bass Strait.^ To these I am here 

 going to add a new form collected in the course of the Swed- 

 ish Arctic Expedition 1900. The genus will, therefore, com- 

 prise five northern and two southern species. 



Although the genus, without doubt, must be regarded 

 as of abyssal origin, it is worth while remarking that Fseu- 

 domma australc was ol)tained at a depth of 33 fathoms and 

 Fseudomma truneatum once at a depth of 45 fathoms. 



32. Pseudomma roseum G. O. Särs. 



1870. Pseudomma roseum G. O. Sars, Nye Dybvandscrustaceer fra 



Lofoten, 1. c. p. 154. 

 1870. » » G. O. Sars, Carcinol. Bidrag til Norges 



Fauua etc, I. 1. c. p. 54, tab. IV. 

 1879. > » Smith, Stalk-eyed Crust. Atl. Coast North 



America, 1. c. p. 98. 



Localities: 

 in 1900: 



stat. 18. lat. 74' 30' N., long. 18' 40' W., East Greenland, S.E. of 



Walrus Island, depth 80 — 100 m., mud and stones, 4/VIII, 



two spec. (9)- 

 » 21. East Greenland, off Kaiser Franz Joseph Fiord and Mackenzic 



Bay, depth 250 m., mud, 8/VIII, twelfe spec. (40^, 8$). 

 » 27. East Greenland, Kaiser Franz Joseph Fiord, Muskox-Fiord, 



depth 220 m., clay, 21/VIIL three spec. (9). 



This pretty Mysidean was first discovered by Sars off 

 Lofoten Islands, where, in some places, it was rather abun- 

 dant. It was afterwards obtained in the Hardanger Fiord, 

 and by the Norwegian North Atlantic Expedition, at one 



^ In the »Fauna und Flora Grönlands», 1. c. p. 200. Vanhoefpen shortly 

 described another species, viz. Pseudomma parvum, but without giving any 

 details or figures at all. 



