THE MANUAL OF CONCHOLOGY. 



;y- — "*** 



Founded by the late fleo. VV. Tryon, Jr., and continued by Henry A., Pilsb v. Sci. 1)., 

 for the Academy of Natural Sciences of Philadelphia. 



The Manual of Concholjgy is a fu'l;i Ohatrattd monography of recent niol'.usks. 



Issued in octavo foi in cpiaiterly parts. Kach part dompris s ill (or in. 



letterpress, and 1") ti 'J 11 plates. 



The Fifjsm Skries, Marina Univalves, of which seventeen volumes line appeared, ig 

 now finished ns planned by its illustrious founder. Of tho Segon 



Mollusis, Eightei n Volumes have been published, completing Hell's with index. ,\ few 

 copies of Vol. IX of this series, "fiuide tnthe Study of Helices," wiil be itely at 



the regular subscription price. Separate copies of (lie Index, suitable for the pu p 

 tie or Checli list, enn aLso be hail at §1 00 each. 



The Monograph of the TJidimi is now completed with Index. Si po 

 51. iach. 



The Monograph of the Vrocoptidx has a'so been complete; 1 , and Vol. MX is new in 

 progress, finishing the slufy of the AcJiatmide- 



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



edition (both colo I plates), §£.00 per part- 



For further informal] iptive circular, with sample plat' of Mo 



S. RAYMOND ROBERTS, Treasurer. 



I*. Address, GLES IMliGE, NEW JEKSKY, V- S- \. 

 Ka illustrated CATALOGFE OK .TAPAXESE MARINE MOLM'SKS by 

 and II. A. Bilsbry. Paper, §2.50. 



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