SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 57, NUMBER 8 



CAMBRIAN 



GEOLOGY AND PALEONTOLOGY 



II 



No. 8.— THE SARDINIAN CAMBRIAN GENUS OLENOPSIS 



IN AMERICA 



With Plate 36 



BY 



CHARLES D. WALCOTT 



(Publication 2076) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



MARCH 8, 1912 



