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



THE 



NAUTILUS 



A MONTHLY 





DEVOTED TO THE INTERESTS 

 OF CONCHOLOGISTS. 



\**1?\? 



EDITOR: 

 H . A. Pii-SBRY, Conservator Conchological Section, Academy of Natural Sciences, Philader s *'~"~ 



ASSOCIATE EDITOR : 

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



Vol. X. 



NOVEMBER, 1896. 



No. 7 



CONTENTS: 



PAGE. 



CASCO BAY. By Rev. Henry W. Winkley 73 



THE SYSTEMATIC POSITION OF SPHYRADIUM ( " PUPA " ) EDENTULUM Drap. 



By Dr. V. Sterki. 75 



LIST, WITH NOTES, OF LAND AND FRESH WATER SHELLS COLLECTED BY 

 DR. WM. H. RUSH IN URUGUAY AND ARGENTINA. 



By Henry A. Ptlsbry and William H. Rush. 76 



ISAAC LEA DEPARTMENT 81 



EXTRACT FROM A NOTE BOOK 82 



SOME LAND SHELLS OF MICHIGAN 84 



ODOR OF SNAILS. . . 84 



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-OfSce as second-class matter. 



