NOTES ON BRITISH HYDROBI^ (concluded). 



operculum of a Bithynia it must be wearing borrowed plumes, 

 for the operculum of H. similis is altogether different ; there is 

 no similarity between the two. 



Dr. Jeffreys examined Draparnaud's original type of 

 Cydostoma simile in the Montpellier Museum, and pronounced 

 it to be our H. similis. (See 'British Conchology,' appendix, 

 vol. i, p. 310). 



By a printer's error, the locality Becton (or Beckton) was 

 printed Beeton throughout Mr. Smith's notes. 

 Sevenoaks, Torquay. 

 T-TTCTArATnA institution for natural history, 



J_IJ. J.N J.>I-CXXJ-C:^ BERLIN, N.W., LUISENPLATZ 6. 



Our stock in Q JJ ^ L L S exhibits a wealth of Forms and Species such as 

 can scarcely be found elsewhere. We would refer, in the first instance, to our 

 Catalogues ; but we also arrange every description of Collections to special order, 

 as for instance for comparative studies in PALEONTOLOGY. 



Price Lists on application. Specimens sent for selection. 



ALBUM OF CONCHOLOaiSTS. 



The Editor of the "JOURNAL OF CONCHOLOGY" purposes lorming 

 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: — (L W. Mellor Thos. Rogers, and W. Cash, F.G.S. 

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



A 



lonograpli of the Land & Freshwater MoUasca 



' THE BRITISH FAUNA. 



INFORMATION URGENTLY WANTED FOR MONOGRAPH. 



I. — AVhere did Layard describe Testacella anrigasier ? Mr. Layard himself has 



now forgot. 

 2. — Living specimens of Testacella sciitnlitiu warned. 

 3. — Authentically named specimens of Testacella hisitlcat^i (living preferred) on loan 



or otherwise. 

 4. — Infurmation about the distribution of Helix cantiana. 



Assistance Desired Immediately— Specimens of Testacella from any locality. 



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



reference to Testacellse. 



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

 Any information or sperimens illustrating the Lli-E HISTORY— STRUCTURE, 

 DEVELOPMENT, VARIATION, DisJkiBUTioN, &c.— will be Welcomed and carefully 

 acknowledged. _ Address : —Itlv^. J. W. TAYLOR, Ofhce of the Journal of Con- 

 chology, Sovereign Street, Leeds. 



