studios <iii nuii'iiic Ostruiods 



3(i3 



North Sea (Scottish portion) 



twice during May* 



once „ June 

 English Channel 



never 

 Atlantic (Danish portion) 



once during May 

 Atlantic (Norwegian portion) 



never 

 Arctic Ocean (Russian ])ortinn) 

 never. 



During this time the following numbers of stations were uivestigated : 



This species was thus caught during the month of February at live out of 5U5 stat. 



„ May ., twenty**,, „ 834 ,. 



„ ,, ,, M August ,, one ,, ,, 694 „ 



,, ,, ,, ,, November ,, none ,, ,. 540 ,, 



As is shown by the extracts given above from the plankton tables we are concerned in 

 most cases with finds containing a very few individuals, only on a few occasions during May 

 and February are there more abundant finds. 



It seems to be shown quite clearly from these statements that these tables cannot be 

 considered as supporting the view put forward by C Afsteix of a limited planktonical copulation 

 period; the finds made are too sporadic for this. 



A decided argument against this writer's view is the fact that the species was found 

 in plankton at five stations during the month of February. It is beyond all doubt that in this 

 case there can be no question of ,,das Aufsteigen unreifer Exemplare infolge besonderer hydro- 



* The stalfiiu'iit Willi it'sai'il to Kebruai-y rcrcis to :i liiMillii>ir;il riii<l. Cf. iilmvi'. 

 •» In this number is iiuiudeil Ihr .luiif find, 



