SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 95, NUMBER 4 



SECOND CONTRIBUTION 



TO NOMENCLATURE OF CAMBRIAN 



TRILOBITES 



BY 



CHARLES ELMER RESSER 



Curator, Division of Invertebrate Paleontology, 



U. S. National Museum 



(Publication 3383) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



APRIL 1, 1936 



