digaster

Updated: January 12, 2026

Worms belonging to one genus, Digaster, have two distinct but quite similar gizzards; and in another genus, Moniligaster, the second gizzard consists of four pouches, one succeeding the other, so that it may almost be said to have five gizzards.

Charles Darwin - The formation of vegetable mould through the action of worms, with observations on their habits