Errantia

·noun ·pl A group of chaetopod annelids, including those that are not confined to tubes. ·see Chaetopoda.

errantia
errantia, ae, f. [erro], a wandering : animi, Att. ap. Non. 204, 13 (Rib. Fragm. Trag. p. 196). ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.