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, Mollusca, 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 : — 



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

 peregra var. scalariformis, Ancylus lacustris var. albida, Helix rupestris 

 var. uiridescenti-alba, Balia perversa var. uiridula, Clausilia paruula vars. 

 albida and dextrorsa: C. biplicata vaj-. Nelsoni, and sinistral specimens of 

 Limncea stagnalis, Helix uirgata, Cochlicopa tridens, and Acme lineata. 



PHILIP B. MASON, Burton-on-Trent. 



BOOKS RECEIVED. 



Zoologischer Anzeiger herausgegeben von Prof J. Victor Cams in 

 Leipzig — I. Jahrgang 1878 and II. Jahrgang 1879. 



[The Editor. 



Ophiuridae and Astrophytidae of the '' Challenger" Expedition, 

 Part I. — By Theodore Lyman (Bulletin of the Museum of 

 Comparative Zoology, at Harvard College, Cambridge, 

 Mass.) — Vol. v., No. 7, pp. 65 to 168 and 10 plates. 



[Prof Alexander Agassiz. 



Zoologischer Anzeiger herausgegeben von Prof J. Victor Carus 

 in Leipzig — No. 34, July 28, 1879. [The Editor. 



Annual Report of the Curator of the Museum of Comparative 

 Zoology at Harvard College, for 1877-8 — Cambridge, 1878, 

 40 plates, with Photograph and Plan of Zoological Laboratory 

 at Newport, Rhode Island. [Prof Alex. Agassiz. 



Catalogue of the Terrestrial Air-breathing Mollusks of the United 

 States and adjacent Territories of North America : By 

 Thomas Bland, 8vo., 4 pp. [Mr. John H. Thomson. 



Jahrbiicher der Deutschen Malakozoologischen Gesellschaft nebst 

 Nachrichtsblatt. Redigirt von Dr. W. Kobelt — Jan., Feb. 

 and July 1879, .290 pages and 7 plates. The Editor. 



Notes on some British Land and Freshwater Shells: By J. Gwyn 

 Jeffreys, LL.D.,F.R.S. (From the Ann. and Mag. Nat. Hist., 

 Nov. 1878), 8vo., 6 pp. (The Author. 



