¥ * ¥i TRANSACTIONS 



AMERICAN PHILOSOPHICAL SOCIETY, 



HELD AT PHILADELPHIA, ' 



FOR PROMOTING USEFUL KNOWLEDGE. 



VOLUME XVIII -NEW SERIES. 



PART II. 



Article II. — The Mammalia of the Deep River Beds. By W. B. 

 Article III. — Tfie Classification of the Ophidia. By E. D. Cope. 



|' It \ \ a A 1 1 1) It i a : 



PUBLISHED BY THE SOCIETY, 



and for sale by 



The American Philosophical Society, Phil>->e:.phia. 



N. TRUBNER & CO., 57 and 59 LUDGATE HILL, LONDON. 



