— in guano, J. W. Bailey, xlviii, 338.
— of rock salt, observations on, xli, 193.
Achnanthes, xliii, 325.
— brevipes, xliii, 325.f
Actinocyclus, xlii, 93.f
Arthrodesmus curtus, xli, 292.f
— quadricaudatus, xli, 292.f
Zoology–Infusoria.
Asterolampra, characters of genus, xlviii, 203.f