Parasitic upon Polyzoa, etc. circinate branched--branches irregular divaricate.
There are two divisions of the Polyzoa, the Ectoprocta and the Endoprocta.
Vibraculum, vī-brak′ū-lum, n. one of the long whip-like appendages of the cells of some Polyzoa:—pl.
The Polyzoa are very numerous and form a most attractive group.
The corals are few in number, but the Molluscoida (Polyzoa) are more numerous in species and individuals.
The number of species of Polyzoa is about fifty-four--belonging to twenty-four genera.
The Polyzoa constitute a class in the third great division of the animal kingdom, the so-called Triploblastea.
It appears sometimes to be parasitic upon other Polyzoa, and is then much smaller.
Often applied indiscriminately to any of the Cœlenterata, or even to the Polyzoa.
Parasitic upon Sertularians and Polyzoa; branches straggling of irregular lengths.