Glyphidrilus, [386]

Gnathobdellae, [396] f., [407]

Gnathobdellidae, [407]

Gnathosyllis, colour of, [293]

Gobio, parasites of, [182], [183]

Golfingia, [426], [428], [430]

Goniada, [320]

Goodrich, on Oligochaeta, [378]

Gordiidae, [123], [164] f.

Gordiodrilus, [383] f.