IV THE NAUTILUS. 



THE MANUAL OF CONCHOLOQY. 



Founded by the late Geo. W. Try-on, 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 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 Buliini 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 $5.00 per part. 

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



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



A COMPLETF. CONCHOLOGICAL TEXT BOOK of I2oo pages, 140 plates and over 3500 

 figures of Genera, Anatomy, etc. Three volumes bound in one Cloth. Price $6.00. 



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 M4RINE MOLLUSKS, by F. Stearns and 



H. A. Pilsbry. Cloth $3.00, paper $2.50. 



W AN TE Ih 



North American species of Amnicola, Lyogyrus, Bythinella 

 and other fresh water Rissoid genera. Will buy or exchange. 



BRYANT WALKER, 



18 MOFFAT BUILDING, DETROIT, MICH. 



Shells, Marine Curios, &c. 



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

 from you. All inquiries will have a prompt reply. 



J. H. HOLMES, DUNEDIN, FLA. 



*z%$j$f??> 



CONCHOLOCY. 



G. B. SOWERBY and HUGH FULTON have the pleasure of inform- 

 ing their clients that they have joined in partnership uniting their rich 

 and extensive stocks of shells thereby bringing together an assortment 

 unique in its vastness. 



Amateurs and Museums either forming collections of Mollusca or 

 desiring to add thereto, can by applying to the above, receive selections 

 on approval at moderate prices. 



Collections Purchased. Exchanges made for species not in stock. 

 SOWERBY &, FULTON, 



121 I I 1,11 % n KOA1>, I,OM0 V S. W., 



