120 
THE - CONCHOLOGISTS”: EXCHANGE, 
STANDARD WORKS ON CONCHOLOGY. 
SOLD ONLY FOR CASH. 
OONOHOLOGY. 
Tryon, Geo. W. Jr. STRUCTURAL 
SYSTEMATIC CONCHOLOGY, and, also, MAN- 
UAL OF CONCHOLOGY. The latest works for 
Conchologists. Subscriptions taken and _ filled. 
Circulars sent on application. 
SprciaL Norice:—Second-hand copies of Tryon’s 
STRUCTURAL AND SYSTEMAs TIC CONCHOL- 
OGY for sale at $5.00—Cash. Postage prepaid. 
Woodward. MANUAL OF THE MOLLUSCA, 
with Appendix, by Ralph Tate, 642 pp: 23 plates, | 
441 figures, 270 illustrations. London, 1880 edition. 
Price $2.50, postpaid. Formerly, $2.60. 
The same, 1875 edition, $1.60 postpaid. 
Keep, Josiah. WEST COAST SHELLS. The 
latest work on California and other West Coast 
Mollusca. Especially adapted to young collectors. 
Price $1.75, postpaid. See advertisement. 
Synonymy of the Species of Strepoma- 
tidae. (Melanians) of the United States. By GEO. 
W. TRYON, JR. 
postpaid. 
Price in cloth, $2; paper, $1.75, 
List of American Writers on Recent Con- 
chology, with Titles of their Memoirs and Dates 
of Publication. By GEORGE W. TRYON, Jr. 
Cloth, $2; paper, $1.75, postpaid. 
Monograph of the Order Pholadacea 
and other Papers. By GEO. W. TRYON, JR. 
Price in cloth, $2; paper, $1.75, postpaid. 
Complete Writings om Recent and Fos- 
sil Conchology of C. S. Rafinesque. 
Edited by WM. G. BINNEY and GEO. W. TRY- 
ON, Jr. Cloth, $2.60, postpaid. 
Descriptions of Shells of North Ameri- 
ea, with 68 colored plates. By THOMAS SAY 
1830-34. Price $10.50, postpaid. 
Ruschenberger’s Elements of Conchol- 
ogy fromthe Text of Milne-Edwards and Achille- 
Comte. °43 edition, 25 cents pp.; 746 edition, 30 
cents pp. 
Lea, Isaac. SYNOPSIS OF THE FAMILY OF 
NAIADES. 4to, bds.,’52 edition. Price $2, post- 
paid. 
Monograph of the Terrestrial Mollusca 
of the United States, with illustrations of 
all the species. By GEO. W. TRYON, JR. Fine 
edition, plate paper, with duplicate plates colored 
and tinted, $20; colored edition, $13.50; plain edi- 
tion, $8.50. 
AND | 
| 
| Bernardi, GALATEA EY FISCHERIA, 49 pages, 
10 plates, 42 beautifully colored figures, 4to, Paris, 
1860. Slightly foxed. Wheatlcy’s copy. Price $4, 
postpaid. 
Monograph of the Fresh-Water Uni- 
valve Mollusca of the United States. 
By 8.8. HALDEMAN, 1840-44, with continuation 
to 1871, by GEO. W. TRYON, JR.; 2 vols., with many 
colored plates; fine edition; duplicate plates, $40; 
with colored plates, $25; with plain plates, $18. 
| American Journal of Conchology, 1865- 
74. Seven vols., 8 mo., 2500 pages, illustrated by 
150 plates, many colored, besides about a thousand 
wood engravings. Published at $70. Price for 
7 vols., new, complete, $25. 
Mollusca of Massachusetts. By W.G. BIN- 
NEY, Boston, 1870; 529 pp.; 12 plates, 11 colored ; 
134 figs.; 406 ills.; 8vo. New, unused. Price, post- 
paid, $15, 
Baldwin, D. D. Land Shellsof the Hawaiian 
Islands, 9 pages, paper. Price, 25 cts. post-paid. 
Wright, Berlin H. Check List of North Amer- 
ican Unionide and other Fresh Water Bivalves; 8 
Pages, paper. Just issued. Price 25 cents, post 
paid. 
MISCELLANEOUS. 
Random Notes on Natural History. 
This journal, now out of print, is rapidly becoming 
scarce. We offer the back numbers containing the 
previous cbapters of Mr. H. F. Carpenter’s very 
instructive article upon ‘The Shell Bearing Mol- 
lusea of Rhode Island,’ Mr. John Ritchie, Jr.’s 
“Check List of Shells,” besides numerous articles 
of interest to the conchologist, at the following 
prices: 
Vol. I, complete, . ; $1 50 
Vol. I, minus Nos. 1 and 2, . 1 00 
Vol. II, complete, Sign tod Bly) 
Vole LDL Complete; uae emer e 75 
Postage extra in each case at the rate of six (6) 
cents per volume. 
American Journal of Science and Art. 
Vol. XI, 1876. Unbound. Complete $3.75, postpaid. 
Description of the Inferior Maxillary’ 
Bones of Mastodons, «te. 10 plates, 25 
pp. By Isaac Hays, M. D. Price, post-paid, 50 cts. 
Methods of Study in Natural History. 
Agassiz. 
Post-paid, $1.15. 
327 pp. ills., 1875. 
ADDRESS 
The Conchologists’ Exchange 
CHESTNUT HILL, 
PHILADELPHIA, PA., U.S. A. 
