CANCER SERRATUS. 257 



ORDER.— MALACOSTRACA 



GENUS II.— GAMMARINI. 



SPECIES I. 



CANCER vel GAJVIMARUS SQUILLA, OR SHRIMP. 



This has a snout like a prawn, but deeper and thinner; 

 the antennae, or feelers, are longer in proportion to the bulk ; 

 the subcaudal fins are rather larger, and at full growth it is 

 not more than one-half the size of the prawn. It is found 

 near Spitzbergen, and about the Arctic shores. 



SPECIES II. 



CANCER vel GAMMARUS SERRATUS, OR PRAWN. 



This species has a long serrated snout bending upwards ; 

 three pair of filiform feelers ; claws small, furnished with two 

 fangs ; chest smooth ; five joints to the tail ; a fibulated 

 middle caudal fin : the two outermost are flat and rounded. 

 Captain Phipps found one of these in the stomach of a seal 

 caught near Spitzbergen. - 



