MANUAL OF CONCHOLOGY; 



STRUCTURAL AND SYSTEMATIC. 



-WITH ILLUSTRATIONS OF THE SPECIES 



By GEORGE W. TRYON, Junr., 



Conservator of the Conchological Section of the Academy of 

 Natural Sciences of Philadelphia. 



Vol. I., Cepalopoda, 1879. Vol. II., Muricin^, and Purpurin^, 1880. 

 Vol. III., Tritonid/E, Fusid^, and Buccin'id^, 1881. Vol. IV., Nassid/E, 

 MiTRiDiE, Olivid^, &c., 1882. 



CONDITIONS. 



The Manual of Conchology will be published, by subscription, in parts 

 (in octavo form), of which about four will constitute a volume. Each part will 

 embrace from 16 to 24 plates, with accompanying text. Each volume will be com- 

 plete in itself, and will be furnished with appropriate title-page, index, etc. Part I, 

 to be issued January ist, 1879, will commence the history of the Cephalopoda ; the 

 Muricidse will follow. 



It is impossible to predicate the length of time that will be required to complete 

 the work ; it will certainly occupy several years. Subscriptions will be revocable 

 on the completion of any volume. 



'''\* Only 250 copies will be published ; including three styles, as follows : 

 Fine Edition. — The text will be printed on heavy plate paper, and the plates will 



be in duplicate, colored and India tinted. Edition strictly limited to 25 copies. ) 



Price, per Part, ... .. ... ... ... ... $8 co 



Colored Edition.— The plates carefully colored by hand. Per Part, ... 500 

 Plain Edition. Per Part, ... ... ... ... ... 3 00 



American subscribers will please address 



GEO. W. TRYON, Jr., 

 Academy of JVatural Scie?tces, Philadelphia., Pa. 



Foreign subscriptions may be sent to either of the following booksellers ; 

 Trubner & Co., 57, 59 Ludgate, Joseph Baer& Co., Frankfurt am Main. 



London. H. Georg, Rue de Lyon 65, Lyons, 



F, Savy, 77 Boul. St. Germain, Paris. France. 



A. Asher & Co., 53 Mohrenstrasse, H. Georg, Bale. 



Berlin. H. Georg, Corraterie No. 10, Geneva. 



C. Gerold's Sohn, Vienna. U. Hoepli, Milan, Naples and Pisa, 



*^* Subscribers for the current volume, can purchase completed volumes at the 

 subscription price. Non-subscribers will be charged twenty-five per cent, advance 

 upon the subscription price for either of the volumes. 



THE iVJARINE MOLLUSCA OF ROUSILLON: 



DESCRIPTIVE AJfD SYKOMYMIC. 



FORMING ONE YOLUME, ACCOMPANIED BY PHOTOGRAPHIC PLATES. 



By E. BUCQUOY and M. DAUTZENBERG. 



Price 4 FRANCS PER PART, Payable on Receipt of Part. 



The work will be completed in 8 or 10 parts, and 5 photographic plates in each part. 

 Subscriptions to be sent to 



l£. FH. DAUTSElTBEZlGr, 213, sue de rUniversite, Paris. 



