Proceedings of 

 the United States 

 National Museum 



SMITHSONIAN INSTITUTION • WASHINGTON, D.C. 



Volume 118 1966 Number 3 ,25 



REVISION OF THE PILARGIDAE (ANNELIDA: POLYCHAETA), 



INCLUDING DESCRIPTIONS OF NEW SPECIES, AND 



REDESCRIPTION OF THE PELAGIC PODARMUS PLOA 



CHAMBERLIN (POLYNOIDAE) 



By Marian H. Pettibone 



Associate Curator, Division of Worms 



In studying some polychaete material from the Chesapeake Bay, 

 collected by Dr. Marvin Wass of the Virginia Institute of Marine 

 Science, 5 species of pilargids were found, including 3 new species and 

 a species that appeared to be one of the questionable species of 

 Webster, 1879, from Virginia. This prompted a review of the family. 

 The Pilargidae was monographed by Hartman in 1947, including 

 descriptions of 5 species, references to 21 species in all, and keys to the 

 species of Pilargis, Ancistrosyllis, and Loandalia. Seven additional 

 species and 3 genera were listed by Hartman in 1959 and 10 species and 

 1 genus have been added since 1959, bringing to 38 the number of 

 species included up to the present time in this family. Ancistrosyllis 

 longicirrata Berkeley and Berkeley, 1961, was placed by the authors 

 in the Pilargidae but an examination of the holotype, sent on loan 

 through the kindness of Cyril Berkeley, shows that it should be re- 

 ferred to Podarmus Chamberlin in the Polynoidae; it is redescribed 

 in this paper. 



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