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.
Bi, prefixed to any word, signifies two.
Biangulated, having two corners or angles.
Bicuspid, having two points.
Bidentate, having two teeth.
Bifid, opening with a cleft.
Bifarious, parting in opposite directions.
Bilabiate, furnished both with an outer and inner lip.
Bilobate, divided into two lobes.
Bimarginate, furnished with a double margin as far as the lip.
Biradiate, having two rays.
Bivalve, consisting of two valves or divisions.
Blotched, spotted in an irregular way.
Blunt, obtuse, opposed to acute.
Borer, a piercer.
Brinded, streaked.
Bulging, gibbous, swollen out.
Bullate, of a blistered appearance.
Byssus, a beard, common in the Mytilus and Pinna.