

Contributions from the Geological Department 



OF Columbia University 



Vol. XXI. No. I 



flM^koD. of msikm^. 



THE PHYLOGENY OF CERTAIN CERITHIID/E 



ELVIRA WOOD, A. M. 



Submitted in partial fulfillment of the requirements for the degree of Doctor of 

 Philosophy in the Faculty of Pure Science, Columbia University 



[Reprinted from the Annals of the New York Academy of Sciences, Vol. XX, 

 No. 1, Part I, pp. 1-92, Pll. I-IX. Published 14 May, 1910] 





