Siboga-Expeditie 



XIII b 1 



THE 



GORGONACEA OF THE SIBOGA EXPEDITION 



IV. THE PLEXAURED^E 



BY 



C. C. NUTTING 



Professor of Zoology, State University of Iowa 



With 4 plates 



(Aided by a grant from the ELIZABETH THOMPSON SCIENCE FUND) 



LATE E. J. 



PUBLISHERS AND PRINTERS 



LEYDEN 



