Iciligorgia, [351]

Idioplasm, [29]

Ijima, [199], [206], [231], [234]

Ileonema, [137], [152]

Ilyanthus mitchellii, [380]

Ilyodaemon, [571], [572];

I. maculatus, [571]

Imperforate, Foraminifera, [58] f.;

Corals, [371]

Inadunata, [595]