THE CONCHOLOGIST. iii 



THE MANUAL OF CONCHOLOGY. 



Founded by the late Geo. W. Tryon, Jun., continued by Henry A. Pilsbry, 

 Conservator of the Conchological Section, Academy of Sciences of Philadelphia. 



The Manual of Conchology is a fully illustrated monography of the species 

 of recent molluscs, arranged according to their natural affinities. Being later than 

 the monographs of Reeve, Kiener, Kiister, &c, it is much more complete, including 

 hundreds of species not represented in previous monographs, and illustrating a 

 large number of species never before figured or new to science. 



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

 pages of letterpress, and 15 to 20 plates. 



Two series are now in progress : the First Series, Marine Univalves, of 

 which twelve volumes have appeared, and the Second Series, Terrestrial 

 Molluscs, of which six volumes are completed. 



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

 fully equal to the best figures of shells published. 



Prices : — Plain (uncoloured) edition $ 3*00 per part. Coloured edition $ 5*00 

 per part. Fine edition (both coloured and india-tinted plates) $ 8 - oo per part. 



Back parts will be delivered to subscribers at such intervals as may be desired 

 by them. Subscriptions may begin or end with any volume. Single volumes will 

 be sold separately if desired. Address : S. Raymond Roberts, Treasurer 

 Conchological Section, A. N.S., Phil. 



P.O. BOX 93.— GLEN RIDGE, NEW JERSEY, U.S.A. 



THE BRITISH NATURALIST. 



AN ILLUSTRATED MAGAZINE OF NATURAL HISTORY. 



Conducted by JOHN E. ROBSON, F.E.S. 



Contains Articles and Notes on General Zoology by well known writers. 



Molluscan Section : Conducted by Messrs. W. A. Gain and Brockton Tomlin. 



A series of portraits of "Naturalists of the day" are now appearing. 



Special Supplements. Societies' Reports. General Notes. 



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