English

Noun

1. A glandular swelling in the epidermis of some annelid worms; it secretes a viscous fluid in which the eggs are depositied.

In earthworms and some other annelids, the clitellum is a thickened glandular section of the body wall that secretes a viscid sac in which the eggs are deposited. Once the eggs have been deposited in the sac, the clitellum slides off of the earthworm's body.

See also

Earthworm Reproduction