Allogromidiaceae, [58];

habitat of, [48], [59]

Allopora, [287];

A. nobilis, [287]

Alpheus, [351]

Alternating modes of brood-formation in Sporozoa, [48]

Alveolar, structure (fine) of cytoplasm, [6];

system (coarse) in relation to skeleton of Radiolaria, Dreyer's scheme of, [84]

Alveolate ectoplasm, of pelagic Foraminifera, [61];

of Heliozoa, [71] f.;