242 



ASTACIDyE. 



DECAPODA. 



MACROURA. 



ASTACW.E. 



LOBSTER. 



Homarus vulgaris. Edw. 



Specific Character. Rostrum extending beyond the peduncle of the external 

 antenna-, armed with two or three strong teeth on each side, without teeth on 

 its under surface. 



Cancer yammarus, 

 Astacus muriuus, 



LINN. Faun. Suec. 2033. Syst. Nat. Herbst. II, p. 42, t. 



XXV. 



FABR. Suppl. 406. PENN. Brit. Zool. IV. t. x. f. 21. 

 LATR. Hist. Nat. des Crust. VI. p. 233. 



Homuras vulyaris, EDW. Hist, des Crust. II. p. 334. COUCH, Corn. Faun. 



THE body is thick and rounded ; the cepluilo-thorax 

 deeper than it is broad, somewhat compressed at tin 1 



