CLEANSER SWIMMING-CRAB. 



301 



DEC A POD A. 



BRACHYURA. 



PORTUNIDM. 



CLEANSER SWIMMING-CRAB. 



Portunus depurator. Leach. 



Specific character. Front armed with three triangular teeth, and a small one on 

 each side, over the inner angle of the orbit; latero-anterior margin with five- 

 teeth ; carapace irregularly granulate, scabrous. Terminal joint of the posterior 

 feet broadly oval, smooth. 



Cancer depurator, (?) 

 var. 



Portunus depurator, 



plieatus, 



LINN. Syst. Nat. XII. 1043, 23. 



PENN. Brit. Zool. IV. t iv. fig. 6. A. 



LEACH. Edinb. Encycl. VII. p. 390. Trans. Linn. 



Soc. XI. p. 317. Malac. Brit. t. ix. f. 1, 2. 

 Risso, Crust, de Nice. Id. Hist. Nat. de TEur- 



Merid. V. p. 3. EDW. Hist. Crust, I. p. 442. 



THE carapace of this species is very uneven on the sur- 

 face, the regions being distinctly marked, and all the 

 elevated parts scabrous, with unequal raised granules or 

 points, some round, others elongated. The latero-anterior 



