De cap oda —Brachyii ra . 
71 
pair of legs. Two British species of the genus Portunus are 
exhibited : the colours of P. depurator 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 
Pseudocar cinus gigas, from Tasmania. The carapace of this specimen is just 
over a foot in width. [Above Wall- cases Nos. 5 and 6.] 
Neptunus pelagicus is the commonest edible Crab in many parts 
of the East. The Common Shore -Crab, Car cinus mamas, is also 
referred to this family, although the paddle shape of the last legs 
is not so marked as in the more typical Portuhidae, 
Table- case 
No. 15. 
