56 SEUSS: 
CONCHOLOGISTS’ 
EXCHANGE. 
Offered.—Cypriea helvola, erosa; Harpa ventri- 
cosa; Nassa reticulata, variabilis; Frochus cinera- 
rius, exiguus; Gibbula Richardi; 
tanica; Ppasianella Kochii. G. W. MICHAEL, Jr., 
Morro, Cal, 
Wanted.—Achatinella, Goniobasis and Spheri- 
wn. Offered.—Land, fresh-water and marine Mol- 
lusea. H.P Smith, + ustodian Cincinnati Society of 
Natural History, 108 Broadway, Cincinnati, Ohio. 
Offered.—Land and fresh-water shells, bird skins, 
fossils, &c., for minerals. Prof. A. TODD, Elk Head, 
Oregon. 
Offered —Geodes, Minerals and Sea-shells, for U. 
S. Stamps. C. 0. HENBEST, Marshall, Il]. 
Patella Lusi- | 
Sea- ie Coral and other marine curiosities to | 
exchange for offers in Natural History specimens. 
S. H. WITHERSPOON, Pulpit Harbor, Maine. 
Minerals fur same or nice, showy shells) MARY 
M. SPROWLS, Simpson’s Sture, Washington Co., Pa. 
for land and 
V. LEHMAN, Box 100, Tre- 
Coins, Stamps, anthracite fossils, ete, 
fresh-water shells. W. 
mont, Pa. 
papers, ete., for sea-shells and 
Mrs. L. ABBOTT, Ravens- 
Offered.— Books, 
other marine specimens. 
wood, Ill. 
Offered.—Fine Florida Shells and Curios for Nat- 
uralists’ Books, Tools or Microscopes. CHAS. 8. 
McPHERSON, Bonifacio, Florida. , 
Doll, Red-stone 
Buck-skin Tobacco 
Fresh-water and Marine 
Shells, Holy Land Relics and many miscellaneous 
curiosities. Wanted.—Land, Fresh-water and Ma- 
rine Shells, Relicsand Curiosities. THOS. E. ADDY, 
54. N. Franklin St., Janesville, Wis. 
Oftfered.— Indian bos tt holder, 
Pipe-bowl, Bow and Arrows, 
Pouch, Moccasins, Land, 
Fine Books for Sale. 
SOLDIONLY HOR CASH: 
CONOHOLOGY. 
Trvon. Geo. W. Jr. STRUCTURAL AND 
SYSTEMATIC CONCHOLOGY, and, also, MAN- 
UAL OF CONCHOLOGY. The latest works for 
Conchologists. Subscriptions taken and _ filled. 
Circulars sent on application, 
SpreciaL Norice:—Seeond-hand copies of Tryon’s 
STRUCTURAL AND SYSTEMATIC 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- 
tidze, (Melanians) of the United States. By GEO. 
W.TRYON, JR. Price in cloth, $2; paper, $1.75, 
postpaid. 
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 on Recent and Fos- 
sil Conchology_ of C. S&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, 
1830-384. Price $10.50, postpaid. 
Ruschenberger’s Elements of Conchol- 
ogy from the rext of Milne-Edwards and Achille- 
Comte. ’43 edition, 25 cents pp.; °46 edition, 30 
cents pp. 
SYNOPSIS OF THE FAMILY OF 
4to, bds.,’52 edition. Price $2, post- 
Lea, Isane. 
NAIADES. 
paid. 
Monograph of the Terrestrial Mollusca 
of the United States. with illustrations ot 
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. 
Bernardi, GALATEA ET? FISCHERIA, 49 pages, 
10 plates, 42 beautifully colored figures, 4to, Paris, 
1860. Slightly foxed. Wheatley’s copy. Price $4, 
postpaid, 
W.G. Binney. LAND AND FRESH WATER 
SHELLS OF NORTH AMERICA.—Part III. Pa- 
per, 128 pages, 232 figures. Price $1.00, postpaid. 
MISCELLANEOUS. 
Random Notes on Natural History. 
This journal, now out of print, is rapidly becoming 
scarce. We offer the back numbers containing the 
previous chapters of Mr. H. F. Carpenter's very 
instructive article upon ‘The Shell Bearing Mol- 
lusea of Rhode Island,’ Mr. John Ritchie, Jr.’s 
