FIGURES 



Page 



1 Taxonomic characters used in identification of North 2 

 American polychaetes . 



2 Anterior end of Mevoieretla enigmatica, Manyunkia sp.eciosa, 7 



Nereis limnioola. 



3 Operculum of Mera-ierella enigmatiaa . 8 



4 Parapodia of Nereis suoainea and N. lirrtnioota , 9 



5 Parapodia of Laeonereis oulveri and Namanereis hcaoaiiensisj 10 

 tentacular cirri of Lyaastoides alticola . 



Vlll 



