[Annals N. Y. Academy of Sciences, Vol. XX, No. 1, Part I, pp. 1-92, 



Pll. 1-IX. 14 May, 1910] 



THE PHYLOGENY OF CERTAIN CERITHIID^ 



By Elvira Wood 

 (Presented in abstract before the Academy, February 7, 1910) 



CONTENTS 



Page 



I. Introduction • 2 



General principles 2 



Acknowledgments 6 



II. Selection of a genotype for CeritMum sensu stricto 6 



III. Genus CeritMum Columnse 10 



IV. Ontogenetic description of species 14 



A. Recent species * 14 



1. CeritMum tuberosum group 14 



a. European species 14 



6. American species 30 



2. Genera and species related to the CeritMum tuberosum 



group 33 



VulgoceritMum 33 



B. Pleistocenic species of VulgoceritMum 39 



C. Pliocenic species of CeritMum 39 



D. Miocenic species 43 



1. CeritMum 43 



2. VulgoceritMum 46 



E. Oligocenic and Eocenic species 47 



1. CeritMum 47 



2. VicinoceritMum 57 



3. Potamides 59 



4. Potamidopsis 65 



5. VulgoceritMum 77 



F. Cretacic species of CeritMum 79 



G. Jurassic species of CeritMum 80 



V. Summary 81 



VI. Phylogenetic table of certain Cerithiidne 85 



Note. The author alone Is responsible for the terminology used throughout this 

 article. Editor. 



