VALUABLE WORKS ON CONCHOLOGY 



FOR SALE. 



1. American Journal of Conchology, 1865-1868. Four volumes, 8vo. 



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

 graphic plates of sliells, many of them finely colored, several portraits of 

 distinguished conchologisls, and about a thousand wood engravings. The 

 articles are contributed by all the i)rominent American Conchologists. 

 Publislicd at .$40. Price reduced to ,$16 for the set. 



2. American Journal of Conchology, Vol. 5, 1869-TO. 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, Rulph Tate, Wesley Newcomb, M.D., S. R. 

 Roberts, J. G. Cooper, M.D , John Wolf, and George W. Tryon, jr. The 

 illustrations con-i.st of 17 lithographic plates, partly colored, and wood 

 engravings. Price .$10.00. 



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



With illustrations of all the Species. By George W. Tryon, Jr. This 

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

 trated by 18 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, wiih uncolored 



plates, Price, .$8.50. 



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



3d. Fine ediiion, on very heavy plate paper, with duplicate plates, plain 



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



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

 tidae (Melanians^. of the United States, with critical observations 

 on their Affinities, and Descriptions of Land, Fresh Water and Marine 

 Mollusca. Svo, over 100 pp., wi'h lithographic plates. 1865. 



Cloth, $2.00. Paper, $1.75. 



CONTENTS: Contrihidions towards a Monography of the OrrlKv Pholadacea, wiih Descriptions of 

 JVf.w Sp-cies. Descriptions nf tton new Sptcies of Fresh Wiler Mollusca from Panama. Des- 

 cription of a new Exotic Melania. Descriptions of new Species of Presti Water Mollusca be- 

 longing to the Families Amnicnlidse, Valvatidse and Limnieid^. inhabiting California. De- 

 scription of a new Species of Pleurocera. Description of a new Species of Teredo, from New 

 Bedford. Mass. Descriptions of two new Species <f Mexican Lind Shells. Synonymy of the 

 Species of Strepomaliilse, Parts 1, "2, 3, i and Supplement. 

 The Kdition i,s very limited — only 7.5 copies. Early applicitioQ will, therefore, be necejsaiy to 



secure the work. 



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

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

 8vo. 1864. With lithographic plates Price, $2.50. 



This is the only pdltioii ot Rafinesquc's Oomplete Writings ever published, and contains reprints 

 of many papers, which had been entirely forg >tten by naturalists. 



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

 Conchology, with the Titles of their Memoirs and Dates of Publication. 

 Svo. 1860. Printed on fine plate paper. Cloth, $2.00. Paper, $1.75. 



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



and other Papers. Svo, 127 pp., with plates. 1862. 



Cloth, $2.00. Paper, $1.75. 

 Contains Honographs of the Families GastrcchHenidae. I'holadidse, and Teredidae. Uistury of 

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



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^*^ A discount of 20 per cent, will be allowed from the above prices, to Mtmhers 

 of the Conchologicgil Section and to Booksellers. Apply to 



"OoNCHOLOGicAL SECTION AcADEMY OF Natukal SCIENCES, Philadelphia," 

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



