GTy QOWERBY, 121, FULHAM ROAD, London, S.W. 

 • 13. O (Removed from 45, Great Russell Street), has 

 probably the Largest .STOCK OF RELENT SHELLS of any dealer in the 

 world, from which selections may be made on the premises or specimens sent for 

 selection. 



COLLECTIONS Illustrative of Generic and Sub-generic Forms, and Species, 

 from 100 to 5,000 species from £1 los. to ^300. 



Museums, Private Collections, and Specimens Classified, Named, and 

 Arranged. 



THESAURUS CONCHYLIORUM. by G. B. Sowerby. Part 44 (com- 

 pletmg the Fifth Volume) contains a completion of the Monographs of the Genera 

 CONUS and VOLUTA, w)th Thirteen Coloured Plates. Price, £1 5s. 



ILLUSTRATED INDtX OF BRITISH SHELLS. New Edition, 

 Enlarged and Revised, with Twenty-six Coloured Plates, giving a figure of every 

 known British species. Price, ^i 15s. 



THE SCOTTISH NATURALIST, 



A QUARTERLY MAGAZINE OF NATURAL SCIENCE. 

 Edited by Professor Trail, Aberdeen. 

 Annual Subscriptions, payable in advance, 4s. 6d., post free. 

 Articles and communications for the Magazine should be sent to the Editor 

 before the 1st of Decemlier, March, June, or ."-eptember, if intended for publication 

 in the January, April, July, or October numbers respectively. 



Orders for copies, subscriptions, &c., should be sent tp S. CowAN & Co., Perth, 

 from whom also Terms for Advertising may be had. 



THE MARINE MOLLUSGA OF ROUSILLON: 



DESCRIPTIVE AiN'D SYMOMYMIC. 



FORMING ONE VOLUME, 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 



M. PH. DAUTZENBEHG, 213, nie de I'Uuiversite, Paris. 



EXCHANGE.— Duplicates Sph. ovale, L. glabra, Pis. Amniciim, 

 and other good local forms of Anodons, Unios, &c. Wanted, 

 Helix fusca, H.ievelata, Suceifiea oblon^^a or viresceiis, L. ii/voluta, 

 Ve/ tlgo alpestris, aiigusiior,2.n6 pusilla, &c.— John R. B. Masefield, 

 Rosehill, Cheadle, Staffordshire. 



SHELLS OF THE BALEARIC ISLANDS.— Senhor Antonio 

 TuDoRi, 35, Calle de San- Gorge, Mahon, Islas Baleares, 

 Spain, would be giad to Exchange Land, Freshwater, and Marine 

 Shells of those Islands for British species. 



The Journal of the Cincinnati Society of Nat. Hist., July, 18S7, vol. x., Nos. 2, 3 [The Society 

 Zoqlogischer Anzeiger, herausgegeben. Prof. V. Carus [1 he Editor! 



Smithsonian Institution Report, for 1S85 [The Institution' 



The Essex Naturali.st, the Joui nal of the Essex Field Club, edited by W. Cole, No. 7—9 ['I he Club! 

 Science Gossip, Aug , ^ept., and Oct. [The Editor! 



Gerstfeldt's Mollusca of the Amur district 

 Handbook— British Association — Manchester, 1887 



Manual of Conchology — Marine Univalves, part 35 [The Author. 



Manual of Conchology— Pulmonata, part 11 [Xhe Author! 



The Natural History lournal and School Reporter, No. 96, Sept., 18&7 I'J he Editors! 



Annalen des K. K. Naturhistorischen Holmuseums, edited by F. R. von Haure, vol. ii., No. 3 



The Wesley ^Naturalist, edited by the Revs. W. H. Dallinger, W. Spiers, and H. Frieiid, No. 6, 



