CONTENTS. 



PART I. 



PROCEEDINGS OF THE CENTENARY MEETING. 



Introduction vii 



Proceedings of the Sessions, March 19, 20, and 21 x 



The Mayor's Address x 



The President's Address xii 



" Reminiscences " by the Recording Secretary xxi 



Record of papers read 



The Banquet 



Delegates to the Centenary Celebration xliii 



Selections from Correspondence lii 



List of other letters and cablegrams cxxxiv 



Acknowledgment cxliii 



xxvi 





PART II. 



MEMOIRS. 



1 





Thomas Harrison Montgomery, Jr., Ph.D. Human Spermatogenesis, 



Spermatocytes, and Spermiogenesis : A Study in Inheritance. Plates 

 I-IV 



Carlotta J. Maury, Ph.D. A Contribution to the Paleontology of Trini- 

 dad. With drawings by Gilbert Dennison Harris. Plates V-XIII. 23 



John M. Clarke, Ph.D. Early Adaptation in Feeding Habits of the 



Starfishes. Plates XIV, XV, XVI 113 



Henry Skinner, M.D., Sc.D. Mimicry in Boreal American Rhopalocera. 119 



F. Bascom, A.M., Ph.D. The Petrographic Province of Neponset Valley, 



Massachusetts 



Frederick W. True, M.D., LL.D. Description of a New Fossil Porpoise 



of the Genus Delphinodon from the Miocene Formation of Maryland. 

 Plates XVII-XXVI 



George A. Boulenger, Ph.D., F.R.S. A Synopsis of the Fishes of the 



129 



163 



Genus Mastacembelus l^ 5 



in 



