4 BOOKS PUBLISHED BY MR. VAN VOORST. 



Synopsis of the Mollusca of Great Britain. Arranged 



according to their Natural Affinities and Anatomical Structure. 

 By W. A. LEACH, M.D., F.R.S., &c. &c. Post 8vo, with 13 

 Plates, 14s. 



History of the British Marine Testaceous Mollusca, 



described in their Natural Order, on the Basis of the Organiza- 

 tion of the Animals, with References and Notes on every British 

 species. By WILLIAM CLARK. Svo, 15s. 



Thesaurus Conchylioruni. By G. B. SOWEBBY. Imp. 

 SYO, Sixteen Parts, 1 5s. each. 



Malacologia Monensis. A Catalogue of the Mollusca in- 

 habiting the Isle of Man and the neighbouring Sea. By 

 EDWARD FORBES. Post Svo, 3s., Edinburgh, 1838. 



Genera of Recent Mollusca; arranged according to their 

 Organization. By HENRY AND ARTHUR ADAMS. This 

 work contains a description and a copper-plate figure of each genus, 

 and an enumeration of the species. 32 Parts are now published, 

 Svo, jfrg+ plain; or royal Svo, with the plates coloured, 5s. each. 



History of British Star-fishes, and other Animals of the 



Class Echinodermata, By EDWARD FORBES, M.W.S., Pro- 

 fessor of Botany in King's College, London. Svo, with more than 

 120 Illustrations, 15s., or royal Svo, 30s. 



Elements of Entomology : an Outline of the Natural Hi- 

 story and Classification of British Insects. By WILLIAM S. 

 DALLAS, F.L.S. Post Svo, Ss. Qd. 



The Entomologist's Annual for 1855 to 1857. Duodecimo, 



boards, 2s. Gd. each. 



History of British Stalk-eyed Crustacea (Lobsters, Crabs, 



Prawns, Shrimps, &c.). By THOMAS BELL, President of the 

 Linnean Society, F.G.S., F.Z.S., Professor of Zoology in King's 

 College, London. The volume is illustrated by 174 Engravings 

 of Species and tail-pieces. Svo, 1 5s. ; royal Svo, '2 10s. 



History of the British Zoophytes. By GEORGE JOHN- 

 STON, M.D., LL.D. Second Edition, 'in 2 vols. Svo, with an 

 illustration of every species. 2 2s. ; or on large paper, royal 

 8vo, 4 4s. 



Manual of the Sea-Anemones commonly found on the 



English Coast. By the Rev. GEORGE TUGWELL, Oriel 

 College, Oxford. Post Svo, with Coloured Illustrations, 7s. Gd. 



Natural History of Animals. By Professor T. ETMER 

 JONES. Vol. II. Insects, &c., with 104 Illustrations, post Svo, 

 12s. 



JOHN VAN VOORST, 1 PATERNOSTER ROW. 



