256 



CRANGONID.E. 



DECAPOD A. 

 MACROURA. 



CRANGONIDjE. 



COMMON SHRIMP. 



Crangon vulgar is. Fabr. 



Specific Character. Carapace and abdomen smooth, excepting a small spine 

 on the median line of the gastric region, and one on each branchia ; second pair 

 of feet nearly as long as the third. 



Astacus Crangon, 

 Crangon vulgarin, 



HERBST, II. p. 57, t. xxix. fig. 3, 4. PENN. Brit. Zool. 



IV. t. xv. f. 30. 

 FABR. Suppl. 410. LATR. Hist. Nat. des Crust. VI. p. 



267, t. Iv. f. 1, 2. LEACH, Malac. Brit. t. xxxvii. B. 



EDW. Hist. Nat. Crust. II. p. 341. 



THE carapace in this species is large, rounded, some- 

 what depressed, particularly towards its anterior part : 

 there is no rostrum, but a slight elevation on the me- 

 dian line, between the eyes ; a minute spine directed 

 forwards over the gastric region, and one a little more 

 conspicuous on each branchia. The eyes are conspi- 



