SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 

 Bulletin 93 



THE SESSILE BARNACLES (CIRRIPEDIA) CONTAINED 



IN THE COLLECTIONS OF THE U. S. NATIONAL 



MUSEUM; INCLUDING A MONOGRAPH 



OF THE AMERICAN SPECIES 



BY 



HENRY A. PILSBRY" 



Special Curator of the Department of 3 folia sea, Academy 

 of Natural Sciences of Philadelphia 



^jji "?>. 



Iffi* 



PER\ 



/ORE 





WASHINGTON 



GOVERNMENT PRINTING OFFICE 

 1916 



