SMITHSONIAN^ MISCELLANEOUS COLLECTIONS. 



— 201 



EES EARCHES 



HYDROBIIN^ 



AND ALLIED FORMS 



CHIEFLY MADE UPON MATERIALS 



MUSEUM OF THE SMITHSONIAN INSTITUTION, 



BY 



DR. WILLIAM STIMPSON. 



WASHINGTON: 

 SMITHSONIAN INSTITUTION. 



AUGUST, 1S65. 



