Dccapoda — Brachyura. 



71 



pair of legs. Two British species of the genus Portiinas are Table-case 

 exliibitecl : the colours of P. depiirator have been carefully copied -^^^ ■'^^• 

 from a living individual, and the specimen is mounted on a sample 

 of the shell-gravel on which it was actually caught. The large 



Fig. 47. 



■ii(hic(iniiuifi gigas, horn. Tasmania,. The carapace of this specimen is just- 

 ovei- a foot in width. [Above Wall-cases Nos. 5 and G.] 



Xcpdiiuis [leliKjiciix is the commonest edible Crab in many parts 

 of the East. The Common Shore-Crab, Care inns Duienus, is also 

 referred to tliis family, although the paddle shape of the last legs 

 is not so marked as in the more typical Portunidae. 



