THE 



NAUTILUS 



A QUARTERLY JOURNAL 



DEVOTED TO THE INTERESTS 



OF CONCHOLOGISTS 



^^ ^^ 



7<" 



I ^ > 



;'!'/'"'"^ 4^* 



VOL. XXXII 

 JULY. 1918, to APRIL, 19l9 >- ^. ^ 



o7 



EDITORS AND PUBLISHERS 



HENRY A. PILSBRY 



(Curator of the Department of MoUusca, Academy ol NatiirHl Scitiicc* 

 Philadelphia 



CHARLES W. JOHNSON 



(Mjrutor of the Boston Society of Natural History 



B(.>8TON 



