﻿SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 127. PL. 42 



0m #: 



mffijm 0M§lik 4$K$$k iPilil 





2p^g*r 



a«F ^44 





%# 'ff „•#''' 



46 



nlcouella. orthambonites, ptychopleurella 



(see explanation of plates.) 



