SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 91, NUMBER 28 



Johnson J^unb 



REPORTS ON THE COLLECTIONS OBTAINED BY THE FIRST 



JOHNSON-SMITHSONIAN DEEP-SEA EXPEDITION 



TO THE PUERTO RICAN DEEP 



NEW SPECIES OF HYDROIDS FROM 

 THE PUERTO RICAN REGION 



(With Two Plates) 



BY 



C. McLEAN FRASER 



Department of Zoology 



University of British Columbia 



(Publication 3443) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



NOVEMBER 10, 1937 



