SECOND SEKIES: PULMONATA. 



MANUAL 



OF 



CONCHOLOGY 



STRUCTURAL IND. SYSTEMATIC. 



WITH ILLUSTEATIONS OF THE SPECIES. 



FOUNDED BY 



GEORGE . TRYON, JR. 







CONTINUED BY 



HENRY A. PILSBRY, Sc. D., 



CONSERVATOR OF THE CONCHOLOGICAL SECTION OF THE ACADEMY OF 

 NATURAL SCIENCES OF PHILADELPHIA. 



UROCOPTID.E. 



PHILADELPHIA: 

 Published by the Conehological Section, 



ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. 

 1903. 



