or/./ 



/ 



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



THE 



NAUTILUS 



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, Acting Curator Wagner Institute of Science. 



Vol. VI. DECEMBER, 1892. No. 8. 



CONTENTS: 



PAGE. 



Preliminary Descriptions of New Molluscan Forms from West 



American Regions, etc. Robert E. C. Stearns 85 



Note on Acm^a saccharina (Linne.) Rev. Geo. W. Taylor 89 



A Nev/ Land Shell from Sumatra, T. H. Aldrich 90 



Mesodon Andrewsi in Missouri. F. A. Sampson 90 



A Visit to Ward's 91 



Notes and News 94 



Exchanges 96 



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-OflSce as second-class matter. 



