—— 
Vol. I. No. 1. 
This is the first issue of ‘‘ THE CONCHOLOGIST’S 
EXCHANGE.” As encouragement is received it will 
assume the form of a printed sheet with columns for 
“Exchanges in Mollusca,” ‘* New Localities,” “Answers 
to Correspondents,’ &c. This, our first number, has 
been sent to 500 Conchologists. Subscription price, 25 
cents per annum, post paid. Exchanges of 20 words, Io 
cents; for each additional 10 words the charge will be 5 
cents. The Conchologist’s Exchange will be issued 
semi-monthly, and wiil endeavour to become a cheap 
_and useful medium for the exchange of those most beauti- 
tiful productions of nature—‘ The Mollusks.”’ 
EXCHANGES FOR MOLLUSCA ONLY. 
CY PRA erosa, L. lynx, L. HELIX albolabris, Say. alter- 
CERITHIUM, maculosum, nata, Say. clausa, Say. 
Kien. eburneum Brug. elevata, Say. fallax, Say. 
CYCLOSTOMA sulcatum, Lam.| hirsuta, Say. inflecta, Say. 
elegans Mull. solitaria, Say. | monodon. 
LYMN EA zebra Tryon. Rackett. Sayii. Binney. 
STROMBINA bicanalifera Sby.| Pupa armifera, Say. corticaria, 
Fissurella volcano, Rve. Col-| Say. Fallax, Say. Unio elegans 
umbella fulgurans Lam. Lea; lachrymosus, Lea; parvus, 
Prof. D. S. SHELDON, Barnes 
Davenport, Ia EDWARD A. ENOS, 
Connersville, Indiana. 
SUCCINEA putris L. 
HELIX arbustorum L. NASSA fossata Gld. 
‘« nemoralis L Purpura saxicola Val. 
«« ericetorum, Mull. Amycla gausapata Gas. 
‘* rotundato, Mull. Adula falcata Gld. 
‘« —lapicida L. cellaria Mull | Acmza spectrum Esch. 
Pupa muscorum, L. scabra, Nutt. pelta, Esch. 
Cionella subcylindriea, Hipponyx cranioides, Carp. 
E LEHNERT, G. W. PUTERBAUGH, | 
Washington, D. C, Greenfield, Indiana. 
GONIOBASIS simplex, Say. : 4 
carinifera, Lam. bella, Con. American and Foreign 
perangulata, Con. eee 
sorgida Lea symmetrica, Hald Unionidae for exchange. 
2benum, Lea Send for list. 
Melantho subsolida Anth. Pg 
Unio-rubiginosus Lea. 
pustulosus Lea., gracilis, Barnes} No responsibility will be as- 
W. A. MARSH, sumed for the standing of the 
Aledo, Illinois./above parties. 
Address, WILLIAM D. AVERELL, Proprietor, 
CHESTNUT HILL, PHILADELPHIA. 
