Ch Conchologists Exchange. 
COPYRIGHT BECUKED. 
A Monthly Publication designed for Conchologists and Scientists 
generally. Wm. D. Averell, Editor and Publisher. 
Wol? i: FEBRUARY, 1888. No. 8. 
The Shell-Bearing Mollusca of Rhode Island, H. F. Carpenter, : ‘ f es 
Brief Notes on the Land and Fresh-Water aK of Mercer Co., Il]., Wm. A. Marsh, 103 
Necrology, . : J : : : é 5 103 
Notes on the Unionide of Florida, Dr. S. H. Wright and Berlin H. Wright, : 104 
Special Notice, : : 4 . - s : : ; 105 
Editorial Notes, ; : ict : ‘ : ‘ ; ; 106 
Young Collectors’ Corner, : 0 : : : : , 107 
_ Cabinet Notes, Prof. Josiah Keep, ; ¢ 3 : . : 107 
Exchanges, : 5 : ; - ; : ‘ ; 108 
CHESTNUT HILL, Philadelphia, Pa. 
Single copies, 38 cents; 50 cents a year in the United States 
and Canada; Foreign Countries, 62 cents; Countries not in 
Universal Postal Union, 75 cents. 
