'Catallacta' definitions:

Definition of 'Catallacta'

From: GCIDE

Catallacta \Cat`al*lac"ta\, n. pl. [NL., fr. Gr. ?. See Catallactics.] (Zool.) A division of Protozoa, of which Magosph[ae]ra is the type. They exist both in a myxopod state, with branched pseudopodia, and in the form of ciliated bodies united in free, spherical colonies. [1913 Webster]