THE EUROPEAN SEAS. 



53 



and destructive power of this formidable animal, 

 which, whatever may be thought of the speculation^ 

 in all probability frequented our seas in vast num- 

 bers, during the glacial epoch, and had doubtless 

 the same predacious habits then as now. 



The number of Annellides procured in the Green- 

 land seas is large, and the researches of Oersted 

 would lead us to estimate the development of the 

 dorsibranchiate tribes to be greater in the Arctic 

 than in more southern seas. But in the present 

 state of science, the sea-worms have not been suf- 

 ficiently in vestigated in any part of Europe to afford 

 a just basis for comparison. Much less have they 

 been examined out of Europe. 



In the enumeration of Scandinavian mollusca, by 

 Professor Loven, a certain number of testaceous 

 species are mentioned as not found south of Fin- 

 mark and Nordland. These may be regarded as 

 characteristic animals of the Arctic province, as it is 

 presented in its southern and continental portion. 

 The Pteropods Clio and Limacina, already men- 

 tioned, are among them. Of Gasteropoda there are 

 Philine scutulum, Trophon harpularium, Trophon 

 Gunneri, Cancellaria viridida, Lamellaria prodita, 

 Natica clausa and aperta, Lacuna labiosa and 

 frigida, Margarita cinerea, Scissurella angulata, Ac- 

 mosa rubella, and Chiton nagelfar, the largest Euro- 

 pean chiton. Of Brachiopods, there is Terebratula 

 septigera. Of Lamellibranchiate bivalves, there are 

 Pecten imbrifer and Groenlandicum, Modiolaria 



