IV THE NAUTILUS. 



THE MANUAL OF CONCHOLOQY. 



Founded by the late Geo. W. Tryon, Jr., continued under the care of the Con- 

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The Manual of Conchology is a fully illustrated monography of recent mollusks. 



Issued in octavo form, in quarterly parts. Bach part comprises 64 (or more ) 

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Two series are now in progress : the FIRST SERIES, Marine Univalves, of which 

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 published, completing Helix with index. A few copies of Vol. IX of this series, 

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The Monography of the Bulimi has been commenced ill the tenth and eleventh 

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The illustrations of the Manual have received high commendation, and are fully 

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Prices : Plain (uncolored) edition $3.00 per part. Colored edition $5.00 per part. 

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Structural and Systematic Conchology, by GEO W. TRYON, Jr. 



A COMPLETE CONCHOLOGICAL TEXT BOOK of 1200 pages, 140 plates and over 3500 

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For further information or descriptive circular, with sample plates of Manual 

 address : 



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An Illustrated CATALOGUE OF JAPANESE MARINE MOLLUSKS, by F. Stearns and 

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THE JOURNAL OF MALACOLOGY, 



Established in 1890 as "The Conchologist, a Journal of Malacology." 



EDITED BY 



WALTER E. COLLINGE, F.Z.S., 



PRESIDENT OF THE MIDLAND M ALACOLOGICAL SOCIETY. 

 WITH THE CO-OPERATION OF 



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REV. A. H. COOKE, M. A., F. Z. S. W. M. WEBB, F. L. S. 



CHARLES HEGLEY, F. L. S. B. B. WOODWARD, F. G. S. 



Indispensable to all Students of the Mollusca. 



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