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 



V i. 1936 



(Publication 3383) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



APRIL 1, 1936 



