DECAPODA. 



MACROVRA. 



SPINOUS SHRIMP. 



261 

 CRANGONID.IE. 



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, sLxth, and seventh, channelled. 



Crangon spinosus. 



Pontopldlus „ 



Crangon catapliractus (in part), 



Leach, Trans. Lin. Soc. XL p. 346. — Lam. 



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



202. 

 Leach, MoI. Brit. t. xxxvii. A. 

 Edw. Hist, des Crust. IL 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 antennaj ahout the length of the 

 pedmicle of the same antennse. Internal antennse very 

 short. First pair of feet strong, the moveahle finger 

 moderately curved ; the second pair extremely small, hut 

 distinctly didactyle ; the third pair very slender and fili- 



