THE MANUAL OF CONCHOLOGY. 



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Founded by the late Oeo. W. Tryop, Jr., ami continued by Henry A. I'ilsbiy, Sci. D., 

 for the Academy of Natural Sciences of Philadelphia. 



The Manual of Conchology is a fully illustrated monography of recent nioP.usks. 

 Issued in octavo form, in quarterly parts. Each part comprises 64 (or more) pages of 

 letterpress, and 15 to '2 11 plates. 



The FII^SW Series, Marine Univalves, of which seventeen volumes have appeared, is 

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

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

 copies 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 he had at $1.00 each. 



The Monograph of the Bulivti is now completed with Index. Separate copies of In. lex, 

 81.00 each. 



The Monograph of the Urocoptida has also been completed, a;:d Vol. XIX is now in 

 progress, finishing the study of the Achatinidoc. 



Prices:— Plain (uneolored) editieii. §3.00 per part- Colored edition, ?5."U per part. Fine 

 edition (both colored and India-tinted plates), gS.OO 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, U- S- A- 

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

 and II. A. Pibbry. Paper, &2.50. 



THE NAUTILUS 



A MONTHLY DEVOTED TO THE 

 INTERESTS OF C0NCH0L0GISTS 



Edited and Published by H. A. Pilsbry and C. W. Johnson, 



Address: C. W. Johnson, Business manager, 



Boston Society of Natural History, 



Boston. Mass, I . S. A. 



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