EXCHANGE.— Wm. H. Weeks, Jun., 508, Willoughby Avenue, Brooklyn, 

 New York, and John Ritchie, Jun., Corresponding Secretary of the Boston 

 bcientific Society, Box 2725, Boston, Mass., U.S., would be glad to exchange 

 AMERICAN and other SHELLS for -BRITISH MARINE, LAND, and 

 FRESHWATER SHELLS. 



A FINE COLLECTION OF BRITISH MARINE SHELLS, containing 

 great rarities such as Fusus bernicensis, F. Turtoni, F. norvegica, Buccinum 

 Dalei, &c., offered with a Collection of British Land and Freshwater Shells, for £^12. 

 A Collection of Foreign Shells — Marine, Land, and Freshwater, with rare Shells 

 such as Voluta magnifica. Helix gheisbreightii, &c., included — for £^. A Collection 

 of European Clausilce, over one hundred species and vars. , for ;^5 ; or if all taken 

 by one purchaser, for 20 guineas. In addition to the Shells many Fossils and 

 Quartz Crystals, &c., will be included. — F. M. Hele, Fairlight, Elmgrove Road, 

 Cotham, Bristol. 



ALBUM OF CONCHOLOGISTS. 



The Editor of the "JOURNAL OF CONCHOLOGY" purposes forming 

 an Album of Conchologists, and would be very glad to receive copies of Photo- 

 graphs, with signature, &c., of those persons willing to co-operate If desired 

 the favor will be reciprocated. The following have recently been added to the 

 Album :— Walter Crouch, F.Z.S., H. Wallis Kew, F.E.S., W. Whitwell, 

 J. Madison, J. W. Williams, T. W. Reader and F. R. Fitzgerald. 

 Address— J. W. TAYLOR, Sovereign Street, Leeds. 



11^ jbti:eifj^:rj^'T}xoj^ 



A 



lonograph of the Land & Freshwater lollusca 



OF THE BRITISH FAUNA. 



INFORMATION URGENTLY WANTED FOR MONOGRAPH. 



I. — Where did Layard describe Testacdla aiirigasier? INIr. Layard himself has 



now forgot. 

 2. — Living specimens of Testacella saituhmi wanted. 

 ^.—Authentically named specimens of Testacdla bisidcaia\y\\\x\g preferred) on loan 



or otherwise. 

 4.— Information about the distribution of Helix cantiana. 



Assistance Desired Immediately — Specimens of Testacellae from any locality. 



Extracts from, or loan of, any work, to which we have not access, having 



reference to Testacellas. 



Co-operation is invited from all Conchologists interested in the above subject. 



iuy information or specimens illustrating the LIFE HISTORY— structure, 



DEVELOPMENT, A^ARIATION, DISTRIBUTION, &c. — wiU be M'elcomed and carefully 



acknowledged. Address /—Mr. J. W. TAYLOR, Office of the Joiimal of Con- 



chology, Sovereign Street, Leeds. 



