decapod

M. Latreille is of opinion, That the four wings or their representatives replace the four thoracic legs of the decapod Crustacea.

We have just mentioned the fact that the head and thorax of a decapod is usually covered by a large shield—the carapace.

Half a dozen varieties of these are known, one of which inhabits an echinoderm, another a decapod crustacean.

The Nauplius, so far as is known, does not occur in any other Decapod form except Penus.

In the only examples of the exuviation of macrourous Decapod Crustaceans, there exists a singular diversity in the process itself.