$1.00 per Year. ($1.12 to Foreign Countries.; IGcts. a copy. 



'*^,2/^. THE 



NAUTILUS 



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, Acting Curator Wagner Institute of Science. 



Vol. IV. MARCH, 1891. No. 11. 



CONTENTS: 



Notes on the Sculpture ok American Limn^^jas, etc. Robt. E. C 



Stearns. ....... 



Note on Goniobasis caten.'^ria S.vy. H. A. Pilsbry. 



Unionid^ of Ga., Ala., S. C, and La., in South Florida. S. Har 



Wright. ....... 



Notes on the Classification of A.meric.\n Land Snails. H. A Pilshn 

 A New Species of Arconaia. H. A. Piisbry. 

 American Association of Conchologists. (Contributed.) 

 General Notes. ....... 



Edward Richards Mayo Oiutuary. .... 



1-21 

 124 



12-3 

 12.5 

 127 

 128 

 131 

 132 



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. 



FOREIGN AGENCIES:— London, Trubner & Co., .57 and .59 Ludgate Hill ; 

 Berlin, R. Friedlander & Son, 11 Carlstrasse. 



