DESCRIPTIONS 
OF 
TERRESTRIAL SHELLS 
OF 
NORTH AMERICA. 
BY THOMAS SAY. 
NEW YOEK: 
H. BAILLlfiEE, 290 BROADWAY. 
LONDON H. BAILLlilRB, 21& REGENT STREET. 
PARIS:— J. B. BAILLlliRE ET FILS, RUB HAUTEPEUILLE. 
MADRID : C. BAILLY-BAILLlliRE, CABLE DEL PRINCIPE 
1858. 
