MANUAL OF GONGHOLOGY: 



A Systematic, Illustrated Monography of the 

 Recent Species of Shells. 



FOUNDED BY THE LATE 



GEOROE MM. TRYON, jri;inLr., 



CONTINUED UNDER THE CARE OF THE 



Conchoiogical Section Acad. Natural Sciences of Philadelphia, 

 BY HY. A. PILSBRY, CONSERVATOR. 



The Manual of Conchology is published, by subscription, in 

 parts (in octavo form), of which four constitute a volume. Each part 

 embraces from fourteen to twenty-four plates, with accompanying text. 

 Each volume is complete in itself, and furnished with appropriate 

 title-page, index, etc. Subscriptions can commence with, and are re- 

 vocable upon, the completion of any volume. 



Plain Edition. — Per part (four parts in a volume) - - - $3 oo 



Colored Edition. — Plates carefully colored by hand, 



per pait - - - --.--------- $5 00 



Fine Edition. — Heavy paper, plates in duplicate, colored 



and India tinted, edition strictly limited to 25 copies - $8 00 



Fii'St Series. — Marine Gastropods. Seventeen vols. com|)leted. 



Second Series. — Pulmonata. Twenty volumes including the 

 Monography of Helicidee, Bulimidie, and Urocoptid^e. 



The ILLUSTRATIONS of the Manual have teceived 

 high commendation, and are fully equal to the best figures of shells 

 published. 



INQUlKIliS AND SU BSCKI PTIONS SHOULD BE ADDKESSED TO — 



S. RAYMOND ROBERTS, Treasurer, 



P.O. Address— Qlen Ridge, N.J., U.S..A. ; 



OR 



KEGAN PAUL, TRENCH, TRUBNER & Co., Ltd. 

 43, Gerrard Street, LONDON ; 



OK 



R. FRIEDLAENDER & SOHN, Berlin. 



