VALUABLE WORKS ON CONOHOLOGY 



FOR SALE. 



1. American Journal of Conohology, 1863 — 1868. Four volumes, 8vo. 



Containing over sixteen hundred pages, illustrated by one hundred litho- 

 graphic plites of shells, many of them finely colored, several portraits of 

 distinguished conchologists, and about a thou-and wood engravings. The 

 articles are contributed by all the prominent American Conchologists. 

 Published at $40. Price reduced to $16 for the set. 



2. American Journal of Conchology, Vol. 5, 1869-70. Containing 



350 pages of valuable articles by Wm. M. Gabb, James Lewis, M.D., Wm. 

 G. Binney, Thomas Bland, T. A . Conrad, Wm. Harper Pease, John H. Red- 

 field, Theo. Gill, Wm. H. Dall, Ralph Tate, Wesley Newcomb, M.D , S. R. 

 Roberts, .J. G. Cooper. M. D , John Wolf and Gtorge W. Tryon, Jr. The 

 illustrations consist of 17 lithographic plates, partly colored, and wood 

 engravings. Price $10.00. 



3. Monograph of the Terrestrial Mollusca of the United States. 



W r ith illustrations of all the Species. By George W Tryon, Jr. The 

 work is now completed. It contains over 200 pages of text and is illus- 

 trated by 20 lithographic plates crowded with figures. Only 100 copies 

 were printed, which are mostly sold. The work is published in the 

 following styles : 

 1st. Plain edition, printed on fine calendered paper, with uncolored 



plates. Price, $8.50. 



2d. Colored edition, same paper, plates finely colored, Price, $13.50. 



3d. Fine edition, od very heavy plate paper, with duplicate plates, plain 



on tintee paper, and finely colored, Price, $20.00. 



4. TRYON, GEO. W , Jr., Synonymy of tha Species of Strepoma- 



tidae (MeHnians) of the United States, wiih ciitical observations 

 on their Affinities, and Descriptions of Lund, Fresh-Water and Marine 

 Mollusca. 8vo., over 100 pp., with lithographic plates. 1865. 



Cloth, $2.00. Paper, $1.75. 



CONTENTS : Contributions towards a Monography of the Order Pholudacea, ivith Descriptions of 

 New Species. Descriptions of two new Speces of Frtsh Water Mollusca from 1'anama. Des- 

 cription of a new Exotic Mela nia. Descriptions of new Species of Preih Watt r Mollusca be- 

 longing to the Families Amnicolidas, Vklvatidce and Limnieidoe, inhabiting California. De- 

 scription of a new Spevirs of I'leurocera. Des ription of a new Speccis of Teredo, from New 

 Bedford Mass. Descriptions of two n w Species of Mexican Land Shells. Synonymy of the 

 Spceies of Strepomatidse, J'arts 1, 2, 3, 4 and Supplement. 

 The Edition is very limited — only 7;"> copies. Early application will, therefore, be neces- 

 sary to secure the work. 



5. RAFINESQUE C. 8 , Complete Writings on Recent and Fossil 



Conchology. Edited by William G. Binney and Geo. W T . Tryon, Jr. 

 8vo. 1860. Wiih lithographic plates. Price, $2.50. 



This is the only edition of Rafinesque's Complete Writings ever published', and contains reprints 

 of many papers, which had been enliiely forgotten by naturalists. 



6. TRYON, GEO. W., Jr., List of American "Writers on Recent 



Conchology. with the Titles of tbeir Memoirs and Dates of Publication. 

 8vo. I860. Printed on fine plate paper. Cloth, $2.00. Paper, $1.75. 



7. TRYON, GEO. W. Jr , Monograph of the Order Pholodacea, 



and other Papers. 8vo, 127 pp., with plates. 1862. 



Cloth, $2.00. Paper, $1.75. 



Contains Monographs of the Kainilrs Gastrocbaenklae, Pholadidas, and Terfdidas. History of 

 American Conchology, and Descriptions of new Species of Fresh Water and Marine Shells. 



„.*.£ A discount of 20 per cent, will be allowed from the above prices, to Members 

 of the Conchological Section and to Booksellers. Apply to 



" Conchological Section Acadkmy of Natural Sciences, Philadelphia,'' 

 p Or to its Agents — see 1st page of this cover. 



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