VALUABLE WOEKS ON CONCHOLOGY 



FOR SALE. 



1 American Journal of Concbology, 1865—1868. Four volumes, 8vo. 

 Containing over sixteen hundred pages, illustrated 03' one hundred litho- 

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

 distinguished conchologists, and about a tbou-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 George W. Tryon, Jr. 1 be 

 illustrations consist of 17 lithographic plate s, partly colored, and wood 

 engravings. Price $10.00. 



3. Monograph cf the Terrestrial N'ollusca of the United States. 



With 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 coloied, Price, $13.50. 



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



on tintee paper, and finely cob red, Price, $20.00. 



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



tidee (Melanians) of the United States, with ciitical observations 

 on their Affinities, and Descriptions of Land, 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 Fholudacea.with Descriptions of 

 New Species. Descriptions of two new Species of Fnsh Water Mollusca from Panama. Des 

 cription of a new Exotic Melania. Descriptions of ntw Specie* of Fralt Wait r Mollusca '<- 

 longing to the Families Amnicolidte, Vkltittidce and Lirnnieidae, inhabiting California. De- 

 scription of a new Spevivs of Plturtcera. Description of a nivs Speco s oj Teredo,frcm AV10 

 Bedford Mass. Descriptions of twon<w Speciis of Mexican Land Slielll. Synonymy of the 

 Species of Strepomatidse, I arts 1, 2. a, 4 ar.d Supplement. 

 The Edition is very limited— on'y 7o copies. Early application will, therefore, be neces- 

 sary 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. 1860. Wiih lithographic plates. Price, $2.50. 



This is the only edition of Kafinesque's Ci-mplete Writings ever published, and contains reprints 

 of many papers, which had bem entnely torgolten 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. 1860. Printed on fineplate paper. Cloth, $2.00. Paper,$1.75. 



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



and other Pap> rs. 8vo, 127 pp.. with plates. 1862. 

 g^gg Cloth, $2.00. Paper, $1.75. 



Contains Monographs cf the fFamili'S Gai-tn il *ni< a?, 1 he ladidse. and Tertdh'ae. History of 

 American Oonchelogy, and Descriptions of new Fpecies of Fresh Water and Marine Shells. 



. *- A discount of 20 per cent, uill be ollovidjrcm the alove prictt. t(> Afimbi 

 of the Conchological Section and to Bookielhrs. -Apply to 



" CONCHOLOGICAL SECTION ACADEMY OF NATURAL Set ENCE8,*Philadelphia," 



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



