Attenuated, thin, slender.
Aurated, eared, having ears as in the scallops.
Auricled, having appendages like ears.
Auriform, ear-shaped.
B.
Barb, anything that grows in place of a beard.
Base, in univalves, that part of the shell by which it is affixed to rocks, &c., and in multivalves the opposite extremity to the apex. In univalves, the opposite end to the apex.
Beak, the continuation of the body of univalves in which the canal is situated.
Beard, the process by which some bivalves adhere to rocks, &c.
Bellying, distended in the middle.