$1.00 per Year. ($1.12 to Foreign Countries.) 10 cts. a copy. 



THE 



NAUTILUS 



A MONTHLY 



DEVOTED TO THE INTERESTS 

 OF CONCHOLOGISTS. 



EDITORS : 



H. A. PILSBRY, Special Curator of the Department of Mollusca, 

 Academy of Natural Sciences, Philadelphia. 



C. W. JOHNSON, Curator of the Boston Society of Natural History. 



Vol. XVII. MAY, 1903. No. 1 



CONTENTS: 



To OUR READERS . . . . I 



MONTANA SHELLS. By Morton J. Elrod 1 



WRITINGS OF JAMES G. COOPER ON CONCHOLOGY AND PALAE- 

 ONTOLOGY. By Wm. J. Kaymond 6 



GENERAL NOTES. 12 



Published by C. W. JOHNSON, Manager. 



Boston Society of Natural History, 



Boston, Mass. 



Kutered at the Boston Post-Office as Second-Class matter. 



