MANUAL OF CONGHOLOGY: 



A Systematic, Illustrated Monog^raphy of the 

 Recent Species of^ Shells. 



FOUNDED BY THE LATE 



OEOROE MSI. T:iRY01Sr, Jiinr., 



CONTINUED UNDER THE CARE OF THE 



Conchological 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 wliich 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 00 



Colored Edition. — Plates carefully colored by hand, 



per part - - - - $5 00 



Fine Edition. — Heavy paper, 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 Helicidae, Bulimidse, and Urocoptidse. 



The ILLUSTRATIONS of the Manual have received 

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

 published. 



INQUIRIES AND SUBSCRIPTIONS SHOULD BE ADDRESSED TO — 



S. RAYMOND ROBERTS, Treasurer, 



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



OK 



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

 43, Gerrard Street, LONDON. 



