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



THE 



NAUTILU 



A MONTHLY 



DEVOTED TO THE INTEREST: 

 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. 



^LIBRARY a 



Vol. XI. 



SEPTEMBER, 1897. 



No. 5 



CONTENTS : 



PAGE. 



BOLINAS, CALIFORNIA ; THE CONCHOLOGISTS PARADISE. 



By Williard M. Wood. 49 



NOTE ON A CALIFORNIAN HELIX. By Henry A. Pilsbry. . 54 



NEW UNIOS. By Berlin H. Wright. ... . .55 



ISAAC LEA DEPARTMENT. . . . .56 



A CLASSIFIED CATALOGUE OF AMERICAN LAND SHELLS, WITH LOCALITIES. 



(Continued). By Henry A. Pilsbry. . . 59 



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. 



