Pelagomacellicephala iliffei n. gen., n. sp. a macellicephalin polynoid is described from a cave in Middle Caicos Island, Bathykermadeca turnerae , n. sp. and Bathybahamas charleneae , n. gen., n. sp. also in the Macellicephalinae, and Harmothoe ingolfiana and H. vagabunda , n. sp. in the Harmothoinae are described from 4 experimental "wood islands" in deep water of the North Atlantic.