THE MANUAL OF CONCHOLOGY. 



Founded by the late Geo. \V r . Tryon, Jr., and continued by Henry A. rilsbry, Sci. D., 

 for the Academy of Natural Sciences of Philadelphia. 



The Manual of Conchology is a fully illustrated iconography of recent mol'.usks. 

 Issued in octavo form, in quarterly parts. Each part comprises 04 (or more) pages of 

 letterpress, and 15 to 20 plates. 



The FIRS'? 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 

 copi;s of Vol. IX of this series, "Guide 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, can also be had at gl.00 each. 



The Monograph of the Bulimi is now completed with Index. Separate copies of Index, 

 si. mi each. 



The M nograph of the L'rocoptida: lias also been completed, and Vol. XIX is now in 

 I 1 ; ress, finishing the study of the Achatinidx. 



Prices:— Plain (unci lored) edition, $3.00 per part Colored edition, $5.00 per part. Fine 

 edition (both colored and India-tinted plab s . $5.00 per part. 



For further information or descriptive circular, with sample plate of Manual, address 



S. RAYMOND ROBERTS, Treasurer. 



P. O Address, GLEN RIDGE, NEW JERSEY, V S- A- 



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

 and H. A Pilsbry. Paper, §2.50. 



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