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



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, Curator of the Wagner Free Institute of Science. 



Vol. VII. /^I't/if- AUGUST, 1893. No. 4. 



CONTENTS: 



PAGE. 



Notice of New Cretaceous Fossils from the Lower Green Marls 



OF New Jersey. R. P. Whitfield 37 



Description of a New Species of Cypr.^a. John Ford. . . .39 



Beach Shell Collecting in Connection with a Study of Oceanic 



Phenomena. Mrs. M. Burton Williamson. 41 



Notes on the North American Species of Succinea. T. D. A. Cockerell. 43 



General Notes 47 



Exchanges 48 



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-OflBce as second-class matter. 



