251 THE NATURAL HISTORY OF 



External Characters. 



A body with naked jointed feet, formed either for swim- 

 ming or running ; no wings ; covering horny or crustaceous, 

 horny, or membraneous, either shield-shaped or bivalve. 

 Branchiae or gills placed beneath the shell. 



GENUS I.— CANCRI. 



SPECIES I. 



CANCER ARCTICA.* 



This beautiful and singular species of the Genus Cancer 

 was first discovered and described by Captain Phipps, who 

 on making a dissection of a seal (Phoca Groenlandica) found 

 it in the stomach of that animal. The Captain placed it in 

 the Systema Natura of Linnaeus, after the Cancer Nor- 



wegficus.* 



The thorax or chest is prickly; the second and third pair 

 of legs are filiform ; the proboscis is short, depressed, 

 acute, and grooved on both the sides, having a vex'y strong 

 tooth underneath. This creature has two antenna?, and ten 

 feet. Captain Scoresby informs us that he has occasionally 

 found a similar species, to the one I have represented in the 

 engraving. It is an inhabitant of the Northern and Green- 

 land Ocean, but nothing further is known by naturalists 

 respecting it ; at least as far as I am aware of. 



* Voyage towards the North Pole, p. 190. 



t Synonymes — Cancer Boreas- Phipps. Cancer Arctica, Dewhuhst. 



