BOOKS RECEIVED.-^C^;?/. 



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

 Expeditions, 1868 — 70, part IL, J. Gwyn Jeffreys, LL.D., 

 F.R.S. (P.Z.S., Juneiy, 1879). [The Author. 



American Naturatist, edited by Prof. A. S. Packard, junr., vol. 

 xiii., Nov. and Dec. [The Editor. 



BuUetino della Societk Malacologica Italiana, vol. v., 1879, folio 

 7--10, folio II — 15; vol. iv., 1878, 21 — 30. [The Society. 



Science Gossip for Nov. and Dec, 1879. [The Editor. 



Notices of Exchanges, not exceeding six lines in length, will be 

 inserted Free of Charge. 



The undersigned is wiUing to Exchange dredgings of myd 

 and sand containing Foraminifera and Diatomaceas, &c., from 

 the Coast of Australia; also Land and Marine Shells from Austra- 

 lasia. For copies of Papers especially on Shells, Mollusca, and 

 tlie Geographical distribution of Animals, will be most gratefully 

 accepted by 



Your obedient servant, 

 JOHN BRAZIER, C.M.Z.S., &c., Cura9oa House, 



II, Windmill St., SYDNEY, N.S.W. 

 Corresponding Member of the Zoological Society of London, 

 Member of the Royal and Linnean Societies of N.S.W., Corres- 

 ponding Member of the Royal Society of Tasmania. 



Mr. J. H. THOMSON, C.M.Z.S., of New Bedford, 

 Massachusetts, U.S.A., would be glad to exchange North 

 American Land Shells for any of his' desiderata in non-operculate 

 Helicacea. 



A good price given, either in money or exchange, for any of 

 the following Shells — -British specimens: — 



Sphcerium lacustre var. rotunda, Limnoea peregra var. picta, L. 

 peregra var. scalaiifonvis, Ancylus lacustris var. albida, Helix rupestiis 

 var. uin'descenti-alba Balia perversa var. uiridula, Olausi lia paruula va.rs. 

 albida and dextrorsa, C biplicata van Nelsoni, and sinistral specimens of 

 Ximncea stagnaiis, Helix virgata. Ooohticopatridens, and Acme lineata. 

 PHILIP B. MASON, Burton-on-Trent. 



TO COLLECTORS OF FOREIGN SHELLS. 

 -A gentleman in Tasmania is anxious to correspond with col- 

 lectors who can send him land shells from Siam, China, Cochin 

 China, and Japan, for Shells from Tasmania, Australia, and South 

 Sea Islands. Address:— Uevit C. E. BEDDOME, I.N., Hill- 

 grove, Brown's River ,Road, HOBART TOWN, Tasmania. 



