PELAGIC ANIMAL LIFE 643 



from the Northern Atlantic stranded on various North European 

 coasts, which he described as Architeuthis dux. The stranding 

 of such giant squids is recorded from Nordland (where Collett 

 heard of a specimen 12 feet long) and from Trondhjem. In my 

 opinion it is an open question whether certain smaller squids 

 do not passively invade the Norwegian coasts in enormous 

 quantities from the Atlantic. During the cruises of the 

 " Michael Sars " in the Norwegian Sea we never found the 

 larvae of the abundant Gonatus fabricii, but on our Atlantic 

 cruise we caught them between Newfoundland and Ireland. 



Our knowledge is, however, most exhaustive on the subject 

 of the Fishes, and from Collett I have compiled the following 

 list of Atlantic species found in Norwegian waters with their 

 relative frequency : — 



ScOMBRIDvE (mackerels) 



Auxis thazardus, 2 specimens. 

 Thynnus thynnus (the tunny), annually. 

 Euthynnus alliteratus, 3 specimens. 

 Sarda sarda, almost annually. 



Stromateid^ 



Centrolophus ponipilus, 2 specimens. 



ZEIDiE 



Zeus fab er (John Dory), about 16 specimens, between Christiania and Bergen. 



Lamprid^e 

 Lampris giitfatus, annually one or more specimens. 



Bramiid^ 

 Bra7?ia rati, i specimen. 

 Pterycombus bra??ia, 14 specimens. 



Trichiurid^ 

 Trichiurus lepturus, i specimen. 



XiPHIIDiE 



Xiphias gladius (the swordfish), 30 or 40 specimens during the last twenty years, 

 Christiania fjord to Fin mark. 



Trachypterid^ 



Trachypterus arcticus, annually one or more specimens stranded. 

 Regakcus glesjie^ 12 specimens during sixty years. 



STERNOPTYCHID.E 



Argyropelecus olfersi, about 20 specimens observed as far as Finmark. 

 Argyropekcus acukatus, i specimen. 

 Argyropekcus hemigynmus, i specimen in Finmark. 



