Notes on the MoUusca in the Great International Fisheries Exnibition, London, 

 1883, with the description of a new species of Pleurotoma, by J. Gwyn 

 Jeffreys, LL.D., F.R.S. &c. [The Author. 



Report of the Lambeth Field Club and Scientific Society. [Mr. E. H. Bowe. 



Lettres Malacologiques a M. M. Brusina, d'Agram et Kobelt de Francfort par 



J. R. Bourguignat. , [The Author. 



Apercu sur les Unionida de la Pdninsule Italique par J. R. Bourguignat. 

 ^ ^ [The Author. 



The American Naturalist, Vol. XVII., No. 10. [The Editor. 



Science, No. 30, 31, 32, 33, 34. [The Editor. 



Science Gossip, Oct. [The Editor. 



The Naturalist, Edited by Hobkirk and Porritt, Oct. [The Editors. 



The Scottish Naturalist, Oct. 1883. [The Editor. 



On the Mollusca procured during the Cruise of H.M.S. 'Triton,' between the 

 Hebrides and Farses, in 1882, by J. Gwyn Jeffreys, L.L.D., F.R.S., 

 F.G.S., &c. [The Author. 



The Journal of the Cincinnati Society of Natural History, April— Oct., 1883. 



[The Society. 



The Transactions of the Hertfordshire Natural History Society and Field Club, 



Vol. II., parts 5 and 6. [The Society. 



PUBLISHED BY SUBSCRIPTION. NOW COMPLETE. 



STRUCTURAL AND SYSTEMATIC CONCHOLOGYi 



AN INTRODUCTION TO THE STUDY OF THE MOLLUSCA, 



By GEORGE W. TRYON, Jun., 



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



This new work includes the Anatomy and Physiology, Geographical and Geo- 

 logical Distribution, Hints for Collecting and Preserving, Nomenclature and Classi- 

 fication, accounts of recent aiid fossil genera, subordinate groups, and two Indices. 



The work corresponds in size and style with the author's Manual of Conchology, 

 of which it forms the introductory series. It comprises, in three octavo volumes, about 

 1200 pages, illustrated by 140 plates, containing over 3500 figures of the genera, 

 anatomy, etc., and a map ; forming the most complete Conchologieal text book ever 

 published, 



Vol. I., 1882, 312 pages, with 22 uncoloured plates and map. Vol. II., 1883, 

 430 pages, with 69 plates of Cephalopod and Gastropod genera. Vol. III., 1884, 

 45° P^ges, with 49 plates of Pulmonata, Conchifera and Brachipoda. 



It is issued in four styles or editions, as follows : — I., Fine Edition, printed on 

 heavy plate paper, coloured plates ; three vols., cloth, $45.00. II., Coloured 

 Edition, printed on fine white paper ; 3 vols., cloth, $33.00. III., Plain Edition, 

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 in one, cloth, $12.00. 



Subscriptions are invited for the whole work only. Special terms oifered to Soci- 

 ties, Colleges, Libraries, &c. Purchasers not approving of it will have the price 

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 Geo. W. Tryon, Jun., Academy of Natural Sciences, Philadelphia (U.S.A.). 

 Also to Trubner & Co., 57 & 59, Lud^ate Hill, London ; F. Savy, Boulevard St. 

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 18, Rossmarkt, Frankfurt Germany ; H. Georg, Corraterie No. 10, Geneva, Switzer- 

 land ; C. Bailly-Bailliere, Plaza de Santa Ana No. 10, Madrid. 



THE SCOTTISH NATURALIST, 



A QUARTERLY MAGAZINE OF NATURAL SCIENCE. 

 Edited by Professor Trail, Aberdeen. 

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