The Naturalist, Edited by Hobkiuk and Porritt, July, and Aug. [The Editors. 



Science Gossip, July, August, and September, [The Editor. 



Separataftryk af Tromso Museums Aar shefter V. (Land and Freshwater Mollusca 



of the Arctic Regions of Norway, by Bergithe Esmark). [The Authoress. 



Separataftryk af Nyt Magazine for Naturvidenskaberne (Bidrag til Kundskaben 

 om Udbredelsen af Norges Landog FerskvandomoUusker i forskjellige Egne 

 af Landet af Bergithe Esmark. [The Authoress. 



Nyt Bidrag til Kundskaben om Norges Land-og Ferskvands Mollusker af 



Birgithe Esmark. [The Authoress. 



On the occurrence of V. moulinsiana in Hertfordshire, by H. Groves. 



[J. Hopkinsoii, F.L.S. 

 Methods by which Members can Assist the Recorder of the Arachnids, by F. M. 



Campbell, F.L.S., F.Z.S., &c. [J. Hopkinson, F.L.S. 



John Hopkins' University Circular, Vol. H., No. 24. [The University. 



The American Naturalist, July, August, and September. [The Editor. 



Proceedings of the Academy of Natural Sciences of Philadelphia, Parts 1—3, 



1882. [The Academy. 



Transactions of the Wisconsin Academy of Sciences, Arts, and Letters, Vol. V., 



1877 81. [The Academy. 



List of Duplicates and Desiderata of the New York Academy of Sciences, Nov., 



1880. ' [The Academy. 



Journal de Conchyliologie, July, Edited by Crosse and Fischer. [The Editors. 



The Scottish Naturalist (New Series) No. i, July, 1883. [The Editor. 



Les Mollusques Marins du Rousillon par Bucquoy, Dautzenberg, and Dollfuss, 



Fasc. 4. [The Authors. 



Zoologischer Anzeiger, herausgegeben Prof. J. Victor Carus, 144 — 146. [The Editor. 

 Local Land and Freshwater Shells, by B. S. Dodd and C. Musson. [A. Loydell. 



The Manual of Conchology, pt. xviii., by Geo. W. Tyron, jun. [The Author. 



Science, Nos. 22—29. [The Editor. 



Tidsskrift for Populcere Fremstillinger af Naturvidenskaben udgivet af C. F. 



Lutken bg Eug. Warming 3 Hefte 1883. [The Editors. 



Malakozoologische^Blatter herausgegeben von S. Clessin, Band i. Bogen 5, Band _ 



ii. Bogen '^—8, Band iii., iv., and v. [The Editor. 



Proceedings of the Academy of Natural Sciences of Philadelphia, Part i., 1883. 



[The Academy. 

 Transactions of the Essex Field Club, vol. vii. part vii. [The Club. 



Jahrbucher der Deutschen Malakozoologischen Gesellschaft Redigirt von Dr. W. 



Kobelt, July, 1883. [The Editor. 



On the Mollusca procured during the ' Lightning ' and ' Porcupine ' Expeditions, 



1868—70, by J. Gwyn Jeffreys, LL.D., F.R.S., &c., part vi. [The Author. 



SHELLS FOR SALE. 



VERY FINE COLLECTION of British and Foreign Shells 

 (mostly former) to be SOLD cheap. Upwarts of 1,000 perfect speci- 

 mens, about 1 90 varieties, of which many are rare and valuable, named 

 and localized. The whole to immediate purchaser, ^^ 2 15s., carriage 

 free. — C. Jefferys, Hill House, Laugharne, Carmarthenshire. 



WANTED. — Authenticated specimens of type and varieties of 

 Anodonta cygnea, A. anattna, Unto pictoruni, U. tiimidus, 

 Sphcerium corneum, and S. lacustre. Shells, or mounted palates in 

 exchange. — J. D. Butterell, John Street, Beverley. 



WANTED. — Pearls, Pearl-bearing Shells, and Shell Cameos.— 

 S. Learoyd, Sherwood House, Huddersfield. 



R CnU/EDRV ^' GREAT RUSSELL ST., LONDON, 



■ D. OUVrLriDlj names and arranges Specimens and Collections 



of SHELLS, for Public and Private Museums; supplies Desiderata and 



entire Collections from a large and valuable Stock, which is constantly 



being replenished by novelties from various parts of the World. 



Price Lists on Application. Specimens sent for Selection. 



