Defn: A genus of bivalve shells, allied to the oyster, so called from their unequal valves, of which the lower is perforated for attachment.

ANOMOPHYLLOUS
An`o*moph"yl*lous, a. Etym: [Gr. (Bot.)

Defn: Having leaves irregularly placed.

ANOMURA; ANOMOURA
An`o*mu"ra, An`o*mou"ra, n. pl. Etym: [NL., fr. Gr. (Zoöl.)

Defn: A group of decapod Crustacea, of which the hermit crab in an example.

ANOMURAL; ANOMURAN
An`o*mu"ral, An`o*mu"ran, a.

Defn: Irregular in the character of the tail or abdomen; as, the anomural crustaceans. [Written also anomoural, anomouran.]

ANOMURAN
An`o*mu"ran, n. (Zoöl.)

Defn: One of the Anomura.

ANOMY
An"o*my, n. Etym: [Gr. Anomia.]