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 Sowerby, G. B., a catalogue of the shells in the collection Tankar- 



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Conchological illustrations: Bulinus. 1833. 



the malacological and coiichological magazine. Part I. 1838. 



a conchological Manual. Ed. II. 1842. 



in Zool. of captain Beechey's voyage. 1839. 



Spix, testacea brasiliensia. 1827. (Descripsit Wagner.) 

 Studer, system. Verz. der Schweizer Conchylien. 1820. 



Sturm, J., Deutschlands Fauna. Abth. VI. Wurmer. H. 1. 1803. II. 2. 

 1806. H. 3. 1813. H. 4. 1819. H. 5. 1821. H. 6. 1823. H. 7. 



1824. H. 8. 1829. 



Ssvainson, W. M. , Zool. illustrations. Lond. 1820. 21. Vol. II. Second 

 series 1831. 32. 



in Brand's journai. Apr. 1828. 



a treatise on Malacology, or shells and shellfish. 1840. 



Terver, M. , catalogue des moll. terr. et fluv. observes dans les pos- 



sessions frangaises au Nord de TAfrique. 1839. 

 Thompson, W. , report on the Fauna oflreland, div. Invertebrata. 



Froni the report of the british association for the advancement of 



science for 1843. Lond. 18 44. 

 Turton, Manual of the land- and freshwater-shells of the British 



islands. Lond. 1831. 

 Valenciennes, in Humboldt voyage. Zool. II. 1833. 

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 Voigt, vid. Cuvier. 

 Wagner, M. , Reisen in der Regentschaft Algier. Bd. III. 1841, 



vid. Schubert. 



Walker, G. , testacea minuta rariora. 178 4. 



Webb et Berthelot, synops. moll. terr. et fluv. , quas in itineribus 



per insulas Canarias observarunt; in Annales d. sciences jiat. 



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 Wood, W., index testaceologicus. 1825. Ed. 11. et suppl. 1828. (In- 



dicem nominum e systemate Lamarckiano addidit Gray.) 

 Zeitschrift f. Malakozoologie vid. Menke. 

 Zoological Journal vol. L N. 1 —3. 1824. N. 4. 1825. Vol. IL N. 5 — 7. 



1825. N. 8. 1826. VoL IIL N. 9 — 11. 1827. N. 12. 1828. Vol. IV. 

 N. 13. 14. 1828. N. 15. 16. 1829. Vol. V. N. 17. 18. 1830. 

 N. 19. 1831. N. 20. 1834. 



