)lOi 



THE 



NAUTILUS 



A MONTHLY JOURNAL 



DEVOTED TO THE INTERESTS OF 



CONCHOLOGISTS 



VOL. XXIX 

 MAY, 1915, to APRIL, 1916 



EDITORS AND PUBLISHERS 



HENRY A. PILSBRY 



Cuiator of the Department of MoUusca. Academy ot Natural Science 

 Philadelphia 



CHARLES W. JOHNSON 



Curator of the Boston Society of Natural Hiatory 

 Boston 



