IV THE NAUTILUS. 



THE MANUAL OF CONCHOLOQY. 



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

 chological Section, Academy of Natural Sciences of Philadelphia bv Henrv A 

 Pilsbry, Conservator. 



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



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 its illustrious 

 founder. Of the SKCOND SERIES, Terrestrial Molluscs, 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 purposes of a Catalogue or 

 Check list can also be had at $1.00 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) edition $3.00 per part. Colored edition ^500 per part 

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



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



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

 figures of Genera, Anatomy, etc. Three volumes bound in one Cloth. Price ^6 oo 



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

 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. 



Shells, Marine Curios, &c. 



low prices and should you wish anything from this" section, let me hear 

 from you. All inquiries will have a prompt reply. 



J. H. HOLMES, DUNEDIN, FLA. 



Tie largest and Finest Sjocj uiTftiislfj Two! 



Messrs. Sowerby & Fulton 



Invite collectors to write for their new lists of Mollusca 

 which contain thousands 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 Species not in Stock. 



Special Offer, 25 Species of Pteropoda post free $5.00. 



SOWERBY & FULTON, 



121 I I 1,11 \ II 1(0 \ It, l.o Mtov S. W., ENGL.AND. 



UNITED STATES LAND SHELLS WANTED. 



in order to complete my collection of U. S. land shells I will 

 purchase or exchange. Send for list of desiderata and exchange 

 list. Specimens must be first-class and carefully cleaned. Pilsbry's 

 new " Classified Catalogue " used as check-list. 



GEO. H. CLAPP, 325 Water St., Pittsburgh, Pa. 



