CONTENTS 



Part XVIII 



Systematic : — Page 



Nomenclature xv 



Descriptions : — Plate 



120. Am. impendens CXX 



121. Am. longaevus CXXI A, B 



Supplementary Plates : — 



Gagaticeras funiculatum CXXI I 



Beaniceras costatum CXXIII 



Am. fimbriatus CXXX A, B, c 



Appendix : — Page 



Zoological Analysis b 



Chronological Analysis c 



Postscript c 



Addenda, Corrigenda d 



Directions to Binder e 



Index f 



