









SMITHSONIAN ENSTITUTION 



UNITED STATES NATIONAL MUSEUM, 



SPEOCAL 



HYDEOIDS 



1. 



THE PLUMULARTD^E, 



WITH THIRTY-FUCK PLATES. 



CHARLES CLEVELAND NUTTING, 



PROFF5SO!\ K Zl JUOOY, UNIVERSITY OF IOWA. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE 

 1 900 



