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. 



The Third Volume (commencing January 1st, 1881,) will contain descriptions 

 and figures of the Tritonid.e, Fusid^ and BucciNlD^. This volume will include 

 many species not comprised in any of the monographs of the above genera- hitherto 

 published. The Parts will be issued as nearly as possible at quarterly-yearly periods'. 



[Vol. IV (1882) will probably contain the genera Nassa, Turbinella, Voluta, 

 Mitra, Columbella, Marginella, Oliva, Ancillaria, Harpa, etc.] 



Completed Volumes. 

 Vol. I. Cephalopoda. 1879. 



316 pp. 8vo., illustrated by H2 plates, embracing 671 figures of recent 

 species, and of types of the fossil genera ; together with anatomical details. 

 Vol. II. Muricin^ and Purpurin^:. 1880. 



289 pp. with "JO plates (977 figures). Contains a concise account of the 

 structure, habits and distribution of the prosobranchiate gasteropod mollusks, 

 a sketch of their development, notices of the various systems of classification, 

 etc. ; together with descriptions ot all the species. 



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 00 



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

 Plain Edition. Per Part, ... ... ... ... ... j 00 



American subscribers will please address 



GEO. W. TRYON, Jr., 

 Academy of Natural Sciences, Fhiladelphia, 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. tJ. 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 

 iipon the subscription price for either of the volumes. 



