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

 inserted Free of Charge. 



The undersigned has for Exchange: — 



Land Shells from Australia, Central and Western Polynesia; 

 also the new and rare species from New Guinea and New Cale- 

 donia. The dredged Marine species of Port Jackson correctly 

 named. 



For copies of Papers especially on Shells, MoUusca, and the 

 Geographical distribution of Animals, East Indian and South 

 American Land Shells taken. 



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



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



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:— 



Sphasrium lacustre var. rotunda, Limnoea peregra var. pi'cta^ L. 

 peregra var. scalan'formfs, Ancylus lacustris var. albida, Helix rupestiis 

 var. uiridescenti-alba. Balia perversa var. viridula, Clausilia parvula vars. 

 albida and dextrorsa, C. biplicata var. Nelsoni, and sinistral specimens of 

 Limnoea stagnalis, Helix virgata, Cochlicopa tridens, 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, ^^^rm.-— Lieut. C. E. BEDDOME, I.N., Hill- 

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



BOOKS RECEIVED. 



Synopsis novorum generum, specierum et varietatum molluscorum 

 viventium testa'ceorum anno 1877 promulgatorum (exclusis 

 generibus heliceorum, auriculaceorum et pneumonopomorum) 

 coUegit Dr. W. Kobelt— Frankfort, Oct. 1878, 8vo., pp. 67. 



[The Author. 



The Naturalists' Leisure Hour and Monthly Bulletin: By A. K. 

 Foote, July and Aug. 1878. [The liditor. 



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

 Expeditions, 1868-70 (Part I.): By J. Gwyn Jeffreys, LLD., 

 F.R.S., &c. (P.Z.S. Ap. 16, 1878), 8vo., 24 pp. and 2 plates. 



[The Author. 



