Austen, Mr. R. A. C., researches of, [850], [861].

Austin, Messrs., on crinoidea, [288].

Australia, [803], [809].

Autun, France, [130], [178].

Auvergne, [529], [560], [765].

Ava, Burmah, [185], [278], [794].

Avicula inæquivalvis, [404].

Aylesbury, [481], [498], [863].

Aymestry, [393], [405].

B.