$1.00 per Year. ($1.12 to Foreign Countries.) lOcts. a copy. 



THE 



NAUTILI^ 



XtSwM/\ 



/i^^^^^^*^"**"^^^^ r ^ 



A MONTHLY 



DEVOTED TO THE INTERESTS 

 OF CONCHOLOGISTS. 



EDITOR: 

 H. A. PILSBRY, Conservator Conchological Section, Academy of Natural Sciences, Philadelphia. 



ASSOCIATE EDITOR : 

 C. W. JOHNSON, Curator of the Wagner Free Institute of Science. 



Vol. XI. 



JANUARY, 1898. 



No. 9 



CONTENTS: 



PAGE. 

 - 97 



. 98 

 . 100 

 , 101 



SOME NEW EOCENE FOSSILS FROM ALABAMA. By T. H. Aldrich. 



A PROPOSED CENSUS OF MICHIGAN MOLLUSCA. By Bryant Walker. . 



ON A NEW SPECIES OF VITREA FROM MARYLAND. By Wm. H. Dall. 



A NEW UNDULATE UNIO FROM ALABAMA. By Berlin H. Wright. 



MODIOLA PLICATULA LAMARCK AN EXTINCT LOCALTY. By R. E. C. S. 102 



ISAAC LEA DEPARTMENT. . . . . 104 



A CLASSIFIED CATALOGUE OF AMERICAN LAND SHELLS, WITH LOCALITIES. 



(Continued). By Henry A. PiKbry. . . . 105 



Published by 



H. A. PILSBRY, Editor, Academy of Nat. Sciences, Philadelphia. 



C. W. JOHNSON, Manager, Wagner Free Institute of Science, Philad'a. 



Entered at Philadelphia Post-Office as second-class matter. 



