Historical reference: Do not rely on this information. It is very old. About this collection
Anisopoda (i.e. "feet not all similar"), a subclass of Isopoda, including those in which the body resembles that of the Amphipoda, and in which the appendages on the abdomen (the hind-most section of the body) do not serve as branchite (breathing organs). Tanais, one of the "Slaters," is the commonest genus.