CONTENTS OF VOL. IX 



Bull. No. 

 37- 



New Eocene Species from Alabama. 



By T. H. Aldrich 



Page 



PI'S 1-3 



1-32 



38 — Recent Mollusca of the Gulf of Mexico 



and Pleistocene and Pliocene 

 Species from the Gulf States. 

 Part 2. — Scaphopoda. Gastropoda. 

 Amphineura and Cephalopoda. 



By C. J. Maury 33-173 



39 — The Miocene of Northern Costa Rica 



with Notes on its General Strati- 

 graphic Relations. 



By A. A. Olsson Pi's 4-35 174-482 



