THE MANUAL OF CONCHOLOGY. 



■» *» — ■• 



Founded by the late Geo. W. Tryon, Jr., and continued by Henry A. Pilsbry, Sci. D., 

 for the Academy of Natural Sciences of Philadelphia. 



The Manual of Conchology is a fully illustrated rnonography of recent moltasks. 

 Issued in octavo form, in quarterly parts- Each part comprises 6i (or more) pages of 

 letterpress, and 15 to 20 plates. 



The Fl^sai Series, Marine Univalves, of which seventeen volumes have appeared, is 

 now finished as planned by its illustrious founder. Of the SEGOND Series, Terrestrial 

 Mollusks, Eighteen Volumes have been published, completing Helix with index. A few 

 copies of Vol. IX of this series, "fiuide to the Study of Helices," will be sold separately at 

 the regular subscription price. Separate copies of the Index, suitable for the purpose of a 

 Catalogue or Check list, cnn also be had at §1.00 each- 



The Monograph of Lhe Bulimi is now completed with Index- Separate copies of Index, 

 $1.00 each. 



The M nograph of the Vroeoptidm has also been completed, and Vol. XIX is now in 

 progress, fnishinc the study of the Achatinidis. 



Prices:— 1'lain (unci lored) edition, §3.00 per part- Colored edition, §5.00 per part. Fine 

 edition (both colored and India-tinted plates), §5.00 per part- 



For further information or descriptive circu'ar, with sample plate of Manual, address 



S. RAYMOND ROBERTS, Treasurer. 



P. Address, GLEN KI1 UE, NEW JERSEY, U- 8- A- 

 An illustrated CATALOGUE OF JAPANESE MARINE MOLLUSKS, by F. Stearns 

 and II. A Pilsbry. Paper, §2.50. 



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