Macrura
or MACROURA (-krör'ä), long-tailed Crustaceans; lobsters, a suborder of Decapoda, having the abdomen greatly developed, cylindrical, the segments short, flattened, and expanded laterally; the whole terminated by a broad swimming tail. The antennæ are usually large. The feet are terminated by nipping claws. The young, on being hatched, are not very different in form from their parents. They abound in both salt and fresh water. The sub-order contains the families Crangonidæ, Astacidæ, Thalassinidæ, and Palinuride. They came into existence in Palæozoic times.
MADAGASCAR