Acalephs pl. : of Acalephan

Example:


Taxonomy
Hydroid, Adult, SECTION 1, Aurelia, SECTION 2, Cyanea, Medusae, Embryology, Medusa, Plate, SECTION 3, Histology, family, ppi, SECTION 4, Bibliography, buds, Medusoid.

Defination from the web:
Acalephs. Broad and narrow pouches alternating. Concentric and radiating folds. Tentacles. ... Correspondence between the structure of Polyps and that of the Acalephs and Echinoderms. p. 377-380. ...