SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 95, NUMBER 22 



THIRD CONTRIBUTION 

 TO NOMENCLATURE OF CAMBRIAN 

 TRILOBITES - 



:^ 



V^SONIAK l^sT?r7 



BY 

 CHARLES ELMER RESSER 



\( ArK,^,.£) 103, 



Curator, Division of Invertebrate Paleontology, 

 U. S. National Museum 



(Publication 3408) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



APRIL 5, 1937 



