THE 



NAUTILUS 



A MONTHLY JOURNAL 



DEVOTED TO THE INTERESTS OF 



CONCHOLOGISTS 



VOL. XVII. 

 MAY, 19O3, to APRIL, 19O4. 



BOSTON : 



EDITORS AND PUBLISHERS : 



H. A. PILSBRY, Curator of the Department of Mollusca, Academy oi Natural Sciences., 



PHILADELPHIA. 



C. W. JOHNSON, Curator of the Boston Society of Natural Histot y 



BOSTON. 



