Mollusca regionis Articse Norvegise, pp. 446 and 53 plates, by Dr. Sars. 



[The University of Norway. 

 Science, Vol. iii. Nos. 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58. [The Editor. 



Notes on the Mollusca of Perthshire, by H. Coates. [The Author. 



The Mollusca of Herts, by J. Hopkinson F. L. S. [The Author. 



Zoologischer Anzeiger herausgegeben, von Prof. J. Victor Carus, Nos. 157, 158, 



159, 160, 161. [The Editor. 



Tidsskrift for Populsere Fremstillinger af Naturvidenskaben udgivet af G. F. 



Liitken og Eug. Warming. [The Editors. 



The Naturalist, edited by C. P. Hobkirk, F.L.S., and G. T. Porritt, F.L.S., 



Jan., Feb., and March. [The Editors. 



The American Naturalist, Jan., Feb., and March. [The Editor. 



Note sur les Bulimes Auriculiformes de la Nouvelle-Caledonie, par M. de St. 



Simon. [The Author. 



Bulletins de la Societe Malacologique de France. [The Society. 



Sull' Acme Moutoni, e I'Acme Veneta — Su due Paludine Italiane, by M. Paulucci. 



[The Authoress. 

 Science Gossip, Jan. Feb., and March. [The Editor. 



The Journal of the Cincinnati Society of Natural History, Dec, 1883, Vol. vi. 



No. 4. [The Society. 



Intorno ad Alcuiii MoUuschi terrestre delle Molluche e di Selebes, nota de C. 



Tapparone Canefri. [The Author.' 



John Hopkins' University Circulars, Vol. iii.. No. 28. [The University. 



Handy Reference Catalogue of Topographical, American, Biographical, and 



Miscellaneous Books, offered for sale by Henry Gray, 25, Cathedral Yard, 



Manchester. 

 Proceedings of the Academy of Natural Sciences of Philadelphia, part ii. June — 



Oct., 1883. [The Academy. 



Report of Progress for 1880-2, and maps to accompany (Geological and Natural 



History Survey of Canada), Alfred R. C. Selwyn. LL.D., F.R.S., Director. 



[The Survey. 

 Notes on Some Varieties of Helix nemoralis, by H. Coates. [The Author. 



STRUCTURAL AND SYSTEMATIC CONCHOLOGYj 



AN INTRODUCTION TO THK STUDY OF THE MOLLUSCA, 



By GEORGE W. TRYON, Jun., 



Conservator of the Conchological Section of the Academy of Natural Sciences of Philadelphia. 



Includes the Anatomy and Physiology of the Mollusca, their Geographical and 

 Geological Distribution, Hints for Collecting and Preserving Specimens, Nomencla- 

 ture and Classification, followed by succinct accounts of all the Recent and Fossil 

 Genera and Subordinate Groups, and two Indices. 



It comprises, in three octavo volumes, about 1,200 pages, illustrated by 140 

 plates, containing over.. 3, 500 figures, and a map; forming the most complete 

 Conchological Text Book ever published. 



Fine Edition, duplicate plates, coloured and tinted, $45.00. Coloured Edition, 

 $33.00. tJncoloured Edition, $20.00. Cheap Edition, three volumes bound in 

 one, thin paper, $12.00. 



Address : — Geo. W. Tyron, Jun., Academy of Natural Sciences, Philadelphia, 

 U.S.A., or Trubner & Co., 57 & 59, Ludgate Hill, London, England.' 



THE SCOTTISH NATURALIST, 



A QUARTERLY MAGAZINE OE NATURAL SCIENCE. 

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