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



THE 



NAUTlLUSfife 



A MONTHLY 



DEVOTED TO THE INTERESTS 

 OF CONCHOLOGISTS. 



EDITOR: 

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



ASSOCIATE EDITOR : 

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



Vol. X. OCTOBER, 1896. No. 6 



CONTENTS : 



PAGE. 



SOME NOTES ON THE COLLECTION OF SHELLS IN THE MUSEUMS OF PARIS, 

 BERLIN AND AMSTERDAM. By C. W. Johnson. . . . . .61 



INFLUENCE OF ENVIRONMENT UPON THE FORM AND COLOR OF HELIX 



ALTERNATA. By C. C. Ormsbee 63 



Two NEW PISIDIA. By Dr. V. Sterki 61 



ISAAC LEA DEPARTMENT 68 



NOTES ON SOME SHELLS OF PUGET SOUND. By Mrs. M. Drake. . . 68 



NOTES AND NEWS . 70 



NEW PUBLICATIONS RECEIVED 70 



OBITUARY B. SCHMACKER .72 



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. 



