SPINOUS SHRIMP. 



261 



DEC A POD A. 



MACROURA. 



CRANGONIDJE. 



SPINOUS SHRIMP. 



Crangon spinosus. Leach. 



Specific Character. Carapace armed with five longitudinal series of teeth ; 

 abdomen nearly smooth ; the third and fourth segments slightly carinated ; the 

 fifth, sixth, and seventh, channelled. 



Crangon spinosus, 



PontopMlus 



Crangon cataphractus (in part), 



LEACH, Trans. Lin. Soc. XI. p. 346. LAM. 



Hist. Nat. des Anim. sans Verteb. V. p. 



202. 



LEACH, Mol. Brit. t. xxxvii. A. 

 EDW. Hist, des Crust. II. p. 243. 



THE carapace of this species is armed with five longitudi- 

 nal series of teeth directed forwards. The laminar appen- 

 dage of the external antennae about the length of the 

 peduncle of the same antennae. Internal antennae very 

 short. First pair of feet strong, the moveable finger 

 moderately curved ; the second pair extremely small, but 

 distinctly didactyle ; the third pair very slender and fili- 



