LIVID SWIMMING-CRAB. 



109 



DEC APOD A. 



BRACHYURA. 



PORTVNIDM. 



LIVID SWIMMING-CRAB. 



Portunus Jiolsatus. Fabr. 



Specific character. — Carapace somewhat depressed, minutely granulated ; latero- 

 anterior margin with five strong flattened teeth ; front with three nearly equal 

 teeth ; posterior margin very largely emarginate at the angles for the hinder feet ; 

 hands Avith denticulate carinse ; last joint of the fifth pair roundly oval, more than 

 half as broad as long. 



Portunus holsatus, Fabr. Suppl. p. 336. (Edw.) Edw. Hist. Nat. Crust. 



I. p. 442. 

 „ lividus. Leach, Malac. Brit. pi. ix. figs. 3. 4. 



It is extremely difficult to assign any very satisfac- 

 tory distinctive character to this species. Its great resem- 

 blance to P. marmoreus^ — at least to all the specimens 

 which I have in my possession, fully justify the belief 



