538 ACCOUNT OF THE ARCTIC REGIONS. 



some curiosity and difficulty. It must be migra- 

 tory ; and yet how such a small animal, incapable 

 of taking the water, can perform the journey from 

 Spitzbergen to a milder climate, without perishing 

 by the way, is difficult to conceive. Supposing it 

 to take advantage of a favourable gale of wind, it 

 must still be at least 10 hours on the wing be- 

 fore it could reach the nearest part of Norway, an 

 exertion of which one would imagine it to be to- 

 tally incapable. 



SECT. IV. 



A brief account of Amphibia, Fishes, Animalcules, 

 Ssf. inhabiting the Spitzbergen Sea. 



Class AMPHIBIA. 



Squalus bo7xalis. Greenland shark. — This ani- 

 mal has not, I believe, been described. The ven- 

 tral ims are separate. It is without the anal fin ; but 

 has the temporal opening ; it belongs, therefore, to 

 the third division of the genus. The spiracles on 

 the neck, are five in number on each side. The 

 colour is cinereous grey. The eyes are the most ex- 

 traordinary part of this animal. The pupil is eme- 

 rald green ; the rest of the eye blue. To the poste- 

 rior edge of the pupil, is attached a white vermiform 



