MANUAL OF GONGHOLOGY 



A Systematic, Illustrated Monography of the 

 Recent Species of Shells. 



FOUNDED BY THE LATE 



OEOROE ^M. T:RY0N, JTimr., 



CONTINUED UNDER THE CARE OT THE 



Conchological Section Acad. Natural Sciences of Philadelphia, 

 BY HY. A. PILSBRY, CONSERVATOR. 



The Manual of Cohchology is published, by subscription, in 

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

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

 Each volume is complete in itself, and furnished with ai)propriate 

 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 00 



Colored Edition. — Plates carefully colored by hand, 



per part - - - --..---.---- ^5 00 



Fine Edition. — Heavy i)aper, plates in duplicate, colored 



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



First Series. — Marine Gastropods. Seventeen vols, completed. 



Second Series.- — Pulmonata. Twenty volumes including the 

 Monography of Helicid?e, Bulimidse, and Urocoptidae. 



The ILLUSTRATIONS of the Manual have received 

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

 published. ^ 



INQUIHIES AND SUBSCK'H'THINS SHOULD BE ADUKESSED TO — 



S. RAYMOND ROBERTS, Treasurer, 



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



OR 



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

 43, Gerrard Street, LONDON ; 



OK 



R. FRIEDLAENDER & SOHN, Berlin. 



