SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 148, NUMBER 6 



Cftarles; B. anb iMarp IJaux OTalcott 

 I^esiearcf) jTunb 



MIDDLE AND LATE TURONIAN OYSTERS 

 OF THE LOPHA LUGUBRIS GROUP, 



(With Eight Plates) 



By 

 ERLE G. KAUFFMAN 



U. S. National Museum 

 Smithsonian Institution 



iKf^ 



•>v?f^.l 



\r» 



it&O' 



(Publication 4602) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



OCTOBER 6, 1965 



