VALUABLE WORKS ON CONCHOLOGY 



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



(.'oiitiiiii'it^ over iiixtceii limiiln.'d [Ki^^es. illustrated by one hundred litlio- 

 {jraphic plates of shells, many of them finely colored, several portraits of 

 distinguished couciiolojrists, and about a thousand 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, 18G9-70. Containing 



;-i5u pages of valuable articles by Wni. M. Gabb, James Lewis, M.D., Wm. 

 G. Binney, Thomas lilami, T. A. Conrad, Wni. Harper Pease, John H. Red- 

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

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

 illustrations con.-ist 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 iSpecies. By George W. Trvoa, Jr. The 

 work is now completed. It contains over 200 jiages 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, with uncolored 



plates. Price, $8.50. 



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



3d. Fine edition, 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 (Melaniaiis^ of the United States, with critical observations 

 on their Affinities, and Descriptions of E^and, Fresh Water and Marine 

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



Cloth, $2.00. Paper, $1.75. 



CONTENTS: Contrihaliomt towards a Mnnngraphy of the. Order Phnladacea, with Difcrtptions of 

 Xkiv Sp'cies. Di'scriplinns nf twn new Species of Fresh Water Mollusca from Panama. Des- 

 cription of a new Exotic Mdania. Descriptions of new Species of Fresh Watf'r Mollusca he- 

 Inm/inij to the Families Ainnicolidee, Valeatidx and Limnseidx, inhahitin;/ California. De- 

 scription nf a new Species of FUumcera. D'lscription of a new Species of Teredo, from New 

 Bedford. Mass. Descriptions of two new Spe-ies of Mexican Land Shells. Synonymy of the 

 Species of Slrepomatidx. Parts 1, "i, 3, i and Supplement. 

 The Kdition is very limited — unly 7o copies. Early application will, therefore, be nece.osary to 



Hcure 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 edition of Rafinesque's Complete Writings ever published, and contains reprints 

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



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

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

 8vo. 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. 8vo, 127 pp., with plates. 18G2. 



Cloth, $2.00. Paper, $1.75. 

 Contains Monographs of the Fumilies GastrochaenidsB, Pholadi iae, and Tere<lid:e. History of 

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



,^*„ A discount of 20 per cnt. will he allowed from the above prices, to Membert 

 of the Conchological Section and to Booksellers. Apply to 



CoNCHoLOGiCAL SECTION ACADEMY OF NATURAL SciE.NCEs, Philadelphia, 

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



