JUN 2 )Bv: 

 $1.00 per Year. ($1,12 to Foreign Countries.) lOcts. a copy. 



ix^X)i THE 



NAUTILUS 



A MONTHLY 



DEVOTED TO THE INTERESTS 

 OF CONCHOLOGISTS. 



EDITOR: 

 H. A. PiLSBRY, Conservator Conchological Section, Academy of Natural Sciences, Philadciphia. 



ASSOCIATE EDITOR : 

 C. W. Johnson, Acting Curator Wagner Institute of Science. 



Vol. VI. JUNE, 1892. No. 2. 



CONTENTS: 



PAGE. 



The Shell Bearing Mollusca of Michigan. Bryant Walker 13 



Littoral Land Shells of New Jersey. Wm. B. Marshall 19 



Physa heterostropha. O. a. Crandall. 20 



Notes on the North American Spkcies of Succinea. T. D. A. Cockerel!. 21 



General Notes 23 



Exchanges 24 



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 Pogt-Office as second-class matter. 



