Pseudophryotrocha gracilis Hilbig & Blake 1991

Hilbig & Blake 1991. Dorvilleidae (Annelida: Polychaeta) from the U.S. Atlantic slope and rise. Description of two new genera and 14 new species, with a generic revision of Ophryotrocha. Zoologica Scripta, 20(2) 1991: 147-183