SECOND SERIES: PULMONATA. 



MANUAL 



OF 



CONCHOLOGY 



STRUCTURAL AND SYSTEMATIC. 



WITH ILLUSTRATIONS OF THE SPECIES. 



POUNDED BY 



GEORGE W. TRYON, JR. 



CONTINUED BY 



HENRY A. PILSBRY, Sc. D., 



CONSERVATOR OF THE CONCHOLOGICAL SECTION OF THE ACADEMY OF 

 NATURAL SCIENCES OF PHILADELPHIA. 



Vol. 



ORIENTAL BULIMOID HELICID^E ; ODONTOSTOMIN^E ; CERIONID^E. 



PHILADELPHIA : 

 Published by the Conchological Section, 



ACADEMY OF NATURAL SCIENCES OF I'HII.ADELl'HI A. 

 1901-2. 



