anomura

pl. [Gr. ἄνομος (anomos)= without law; οὐρά ( our a ) = tail.] Zool. A sub-order of Decapod Crustaceans, intermediate between Macrura and Brachyura, differing from the former in the absence of an abdominal fan-shaped fin, as also of natatory feet; and from the latter in general po e ing appendages attached to the penultimate segment of their abdomen. The sub-order is divided into the families Paguridæ, Hippidæ, Raninidæ, Homolidæ, and Dromiidæ (q.v.). Its best known representatives are the Hermit Crabs (Paguridæ).