THE 



NAUTILUS 



A MONTHLY JOURNAL 



DEVOTED TO THE INTERESTS OF 



CONCHOLOGISTS 



VOL. XIX. 

 MAY, 1905, to APRIL, 19O6. 



EDITORS AND PUBLISHERS : 



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



PHILADELPHIA. 



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



BOSTON. 



