$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, Acting Curator Wagner Institute of Science. 



Vol. VI. 1^^ ^/ y MARCH, 1893. No. 11. 



CONTENTS: 



PAGE. 



Observations on the Helices of New Zealand. Dr. H. v. Ihering. . 121 

 On THE Origin of the Land-snail Fauna of Queensland, Australia. 



Charles Hedley 124 



Helices Colonized in Herkimer Co., N. Y. William B. Marshall. . 126 



Notes. on Unio coruscus Gould. Berlin H. Wright 126 



Slugs Injuring Coffee. T. D. A. Cockerel) 127 



Notes on the Helices of the Biologia Centralia Americana. 



H. a. Pilsbry 128 



Notes upon Dr. v. Ihering's Observations. H. A. Pilsbry. . . . 129 



G. W. Lichtenthaler 131 



Notes and Notices 131 



Exchanges 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. 



