524 



THE OCEAN WORLD. 



crawfishes, which have a depressed rostrum, one tooth on each side, 

 and the last ring of the thorax movable. The lobsters (Homarus) 

 have the eyes spherical, the last ring of the thorax being soldered to 

 the penultimate one. The Norway Lobsters (Nephrops norvegicus, 



Fig. 347. Crangon vulgaris. a, Anterior foot or claw. 



Fig. 346) have the eyes uniform, and the two last rings of the thorax 

 movable. 



This last is one of the most beautiful of the larger Macrurans. Its 

 general tint is pale flesh colour, with darker shades in parts, its 

 pubescence light brown. This is generally considered a northern 

 species ; but Mr. Bell states that he has received specimens from the 

 Mediterranean. It is found plentifully on the coast of Norway, on 



