Ammonitidæ, [469], [476].

Amorphozoa, [219].

Amphigens, [61].

Amphitherium Broderipii, [806].

Analysis of Molluskite, [433].

Ananchyte, flint-cast of, [320].

Ananchytes ovatus, [323], [327].

Ancyloceras furcatum, [484].

gigas, [485].