256" THE NATURAL HISTORY OF 



SPECIES IV. 



CANCER NUGAX. 



Hands without fangs; legs fourteen in number; six posterior 

 thighs, compressed and dilated. It chiefly inhabits the 

 Northern Seas, and was captured in a trawl, by Captain 

 Phipps, in 1774, near Moyen Island. 



SPECIES V. 



CANCER PULEX OF LININLEUS. 



The Pulex Fluviatilis of Ray. It has four hands, without 

 fangs, according to Fabricius. It is an inhabitant of the 

 Arctic Ocean, and like the preceding was taken in a trawl, 

 near the coast of Spitzbergen. It is also commonly found 

 in rivers, rivulets, and fountains : it swims in an incurvated 

 posture, and is supposed to be luminous by night. 



SPECIES VI. 



CANCER MEDUSARUM. 



This species has four hands, with a single fang; the head is 

 very obtuse. According to Strom, it inhabits the Northern 

 Seas, and is frequently found adhering to the medusa?: 

 hence its appellation. 



