iv THE NAUTILUS. 



THE MANUAL OF CONCHOLOGY. 



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

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

 Pilsbry, Conservator. 



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 FIRST SERIES, Marine Univalves, of 

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

 illus rious founder. Of the SECOND SERIES, Terrestrial Mollusks, Ten 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 be had at $1.00 each. 



The Mouography 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) edition, $8.00 per part. Colored edition, $5.00 per 

 part. Fine edition (both colored and India-tinted plates), $8.00 per part. 



Structural aurt Systematic Conchology, by GEO. W. TRYON, JR. 



A COMPLETE CONCHOLOGICAL TEXT-BOOK of 1,200 pages, 140 plates, and over 

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

 Price, *(i.OO. 



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 OF JAPANESE MARINE MOLLUsKS, by F. 



Stearns and H. A. Pilsbry. Cloth, $3.00; paper, $2.50. 



MESSRS. SOWERBY & FULTON 



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

 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 may 

 be wanting. We can supply such at lowest cost. 



Exchange or Purchase for Spfcies 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 AND BUTTERFLIES FROM THE PHILIPPINE ISLANDS. 



IN FINEST CONDITION AND AT CHEAP RATES. 

 WRITE FOR PRICE LISTS. 



H. FRUHXTORFER, Thunn-MraxHrW, Berlin, N. W., Genmnii/ 



