egg case

Entomology. ootheca.

Entomology. egg sac.

Origin of egg case

First recorded in 1840–50

The size of this egg-case depends on the size of the species, ranging from three to about eight inches in length.

A Guide to the Study of Fishes, Volume 1 (of 2) |David Starr Jordan
This egg-case is not wholly filled with eggs but has a considerable air-chamber in it, causing it to float.

Elementary Zoology, Second Edition |Vernon L. Kellogg
They remain for a short time after hatching in the egg-case, feeding on each other!

Elementary Zoology, Second Edition |Vernon L. Kellogg
How the cockroach deposits its egg-case; a study in insect behavior.

The Biotic Associations of Cockroaches |Louis M. Roth

One egg-case of a ray may sometimes contain several eggs and develop several young.

A Guide to the Study of Fishes, Volume 1 (of 2) |David Starr Jordan

egg case

A protective capsule of certain animals, such as insects and mollusks, that contains eggs.

See egg sac.