iv THE NAUTILUS. 



THE MANUAL OF CONCHOLOGY. 



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

 chological Section, Academy of Natural .Sciences of Philadelphia, by Henry A. 

 Pilsbry, Conservator. W- f-^ 



The Manual of Conchology is a fully illustrated monography of recent mol- 

 lusks. 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 FIHST SERIES, Marine Univalves, ol 

 which seventeen volumes have appeared, finishing the series as planned by the 

 illustrious founder. Of the SECOND SERIES, Terrestrial Mollusks, Eleven Volumes 

 have been published, completing Helix with index. A few copies of Vol. IX of 

 this series, " Guide to the Study of Helices " will he sold separately at the regular 

 subscription price. Separate copies of the Index, suitable for the purpose of a 

 < 'atalogue or Check list, can also be had at SI. 00 each. 



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

 volumes. 



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

 fully equal to the best figures of shells published. 



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

 part. Fine edition (both colored and India-tinted plates), SS.OU per part. 



Structural aucl Systematic Concliolof>y, by GEO. W. TKYON. JR. 



A COMVLKTK ('ONTHOLOGICAL TEXT-BOOK of 1,200 pages, 140 plates, and over 

 3,500 figures of Genera, Anatom y, etc. Three volumes bound in one. Cloth. 

 Price, few. 



For further information or descriptive circular, with sample plates of Man- 

 ual, address, 



S. RAYMOND ROBERTS, Treasurer, 



P. 0. Address, GLEN RIDGE, NEW JERSEY, U. S A. 



An illustrated CATALOGUE OK JAPANESE MARINE MOLLUsKS, by I-'. 



Stearns and H. A. Pilsbry. Cloth, $3.00; paper, 12.50. 



MESSRS. SOWERBY & FULTON 



Invite collectors to write for their new lists of Mollusca, which contain tliou 

 sands of species, representing nearly all the genera. 



To Curators of American Museums. 



We invite you to apply for estimate for any collections of Mollusca you ina\ 

 be wanting. We can supply such at lowest cost. 



Exchange or Purchase for Spf cies not in Stock. 



SPECIAL OFFERS 16 Species of Pretty Philippine Tree Snails, post free. 

 $2.00. 25 Species of PTEROPODA, post free, $5.00- 



SOWERBY & FULTON, 



15 STATION PARADE KEW GARDENS STATION, LONDON, W.. ENGLAND. 



LUND SHELLS fiHD BUTTERFLIES FROM THE PHILIPPINE ISLANDS. 



IX FINEST CONDITION AND AT CHEAP KATES. 

 WHITE FOR PRICE LISTS. 



H, FRUH8TOEFEP, Tlwrm-Mntx**-.:',, liirlin, \. W., Germany 



