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



THE 



NAUTILUS* 



^^Sfc 



"S3 A -^-^ V> 

 A MONTHLY 



DEVOTED TO THE INTERESTS 

 OF CONCHOLOGISTS. 



EDITOR : 

 H. A. PILSBRY, Conservator Conchological Section, Academy of Natural Sciences, Philadelphia. 



ASSOCIATE EDITOR : 

 C. W. JOHNSON, Curator of the Wagner Free Institute of Science. 



Vol. XI. 



JULY, 1897. 



No. 3 



CONTENTS : 



PAGE. 



SYNOPSIS OF THE PINNID^E OF THE UNITED STATES AND WEST INDIES. 



By Wm. H. Ball. . . . . .25 



ON Two SO-CALLED " BULIMI " FROM THE NEW HEBRIDES. By C. F. 



Ancey. . . 26 



A NEW CANCELLARIA FROM THE ALABAMA EOCENE. By T. H. Aldrich. '27 

 ON A COLLECTION OF MOLLUSKS FROM GRAND TOWER, ILLINOIS. By 



Frank C. Baker. 

 ISAAC LEA DEPARTMENT. 

 NOTES AND NEWS. 

 RECENT PUBLICATIONS RECEIVED. . 34 



Published by 



H. A. PILSBRY, Editor, Academy of Nat. Sciences, Philadelphia. 



C. W. JOHNSON, Manager, Wagner Free Institute of Science, Philad'a. 



Entered at Philadelphia Post-Office as second-class matter. 



