106 G. 0. SARS. CRUSTACEA. [NORW. POL. EXP. 



Occurrence. This form was found in 7 of the samples, taken on the 

 following dates: March 22nd, 1894, between March 26th and April 4th, 1894, 

 May 22nd, 1894, May 7th, 1895, June 25th, 1895, July 30th, 1895, November 

 12th, 1895. One of these samples was taken from the surface of the sea, 

 the others from depths between 100 and 200 metres. 



Fam. 

 23. Acartia longiremis, (Lilljeborg). 



Some few specimens of this well-known form were found in a sample 

 taken October 13th, 1893, north of the New Siberian Islands. 



Distribution. Norwegian coast, Kattegat, the Baltic, Bay of Kiel, British 

 Isles, coast of France. 



CYCLOPOIDA. 

 Tribe: ISOKERANDRIA. 



Fam. ONC.EIDJE. 



Gen. Onccea, Philippi. 



Syn: Antaria, Dana. 



Remarks. This genus was established by Philippi as early as in the 

 year 1843, to include a peculiar Cyclopoid Copepod from the Mediterranean, 

 0. venusta, Phil. Another species, 0. mediterranea, was subsequently added 

 by Glaus, and Dr. Giesbrecht records no less than 8 additional species, some 

 from the Mediterranean, some from the tropical parts of the oceans. I 

 myself, many years ago, observed a species off the south coast of Norway, 

 and this form has turned out to be identical with one of the Mediterranean 

 species described by Dr. Giesbrecht as 0. conifera. In some samples taken 

 in the most easterly part of the polar basin traversed by the 'Fram', 2 spe- 

 cies of this genus were found in great abundance. One of these is iden- 



1 The corresponding subfamily is termed by Dr. Giesbrecht Parapontellina ; but as 

 Acartia is of much older date than Parapontella, the family ought more properly to 

 be named from that genus. 



