MANUAL OF GONGHOLOGY 



A Systematic, Illustrated Monography of the 

 Recent Species of Shells. 



FOUNDED BY THE LATE 



GEOROE \Rl. TI^YON, aviixr.. 



CONTINUED UNDER THE CARE OF THE 



Conchological Section Acad. Natural Sciences of Pliiiadelphia, 

 BY HY. A. PILSBRY, CONSERVATOR. 



The Manual of Gonchology is published, by subscription, in 

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

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

 Eacli volume is complete in itself, and furnished with appropriate 

 title-pnge, index, etc. Subscriptions can conuiience 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 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-two volumes including the 

 Monography of Helicidae, Bulimidse, Urocoptid^e and Achatinellidae. 



The ILLUSTRATIONS of the Manual have received 

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

 published. 



INQUIRIES AND SUBSCRIPTIONS SHOULD BE ADDKESSED TO— 



S. RAYMOND ROBERTS, Treasurer, 



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



OK 



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



43, Gerrard Street, LONDON. 



