BIBLIOGRAPHY OF WORKS REFERRED TO. 
PEEIODICALS. 
American Journal of Conchology, vols. 1-7, Philadelphia. 
American Journal of Science and Arts, New Haven. 
Analyst, The, vol. 8, 1838, Worcester, England. 
Annales des Sciences Naturelles, Paris, vol. 26, 1832. 
Annals and Magazine of Natural History, London. 
Annals of Philosophy (Thomson), London. 
Archiv fiir Naturgeschichte (Wiegmann), 1885-6. 
Canadian Naturalist, The, 1865. 
Conchologist, The, vol. 2, 1893, London. 
Jahrbuch der Malakozoologische Gesellschaft, 1882, Frankfurt am IVIain. 
Journal de Conchyliologie, Paris. 
Journal de Physique, 1817, 1819, Paris. 
Lorquinia, 1919, Los Angeles, California. 
Magazine of Natural History, new ser., vol. 2, 1838, London. 
Malakozoologische Blatter, 1854-1891, Cassel. 
Naturforscher, Der., vol. 16, 1788, Halle. 
Nautilus, The, vol. 1-32, Philadelphia. 
Nova Acta Petropolitana, vol. 2, 1788 (Pallas). 
Philosophical Magazine, Edinburgh, vol. 61, 1823. 
Science, vol. 4, p. 50, 1884. 
West American Scientist, San Diego, California (Orcutt). 
Zeitschrift fiir Malakozoologie, 1848, vol. 1-9, Cassel. 
Zeitschrift fiir Wissenschaftliche Zoologie, vol. 47, 1888. 
Zoe, vol. 4, 1894, San Francisco, California. 
Zoologica, vol. 22, Heft 56, 1909 (Thiele). 
Zoologische Jahrbuch, vol. 7, 1893 ; vol. 20, 1904. 
Zoological Journal, London, vol. 1-5, 1824-1834. 
SOCIETIES AND MUSEUMS. 
Academy of Natural Sciences, Philadelphia, Journal, Proceedings. 
Annals of the Lyceum of Natural History of New York, vol. 4, 1848. 
Beschreibung der Gesellschaft Naturforschende Freunde zu Berlin. 
Boston Journal of Natural History, vols. 1-7. 
Boston Society of Natural History, Proceedings. 
British Association for the Advancement of Science, Annual Reports for 1856 
and 1863 (Carpenter). 
California Academy of Sciences, San Francisco, Proceedings, vols. 1-7, 1854- 
1876; Memoirs, vol. 3, 1903 (Arnold). 
Geological Survey of Canada, Reports of Progress, Memoirs. 
Imperial Academy of Sciences, St. Petersburg, Bulletiit, 1847-1849. 
Konglige Svenska Vetenskaps Akademie, Handlinger, 1847-1878. 
Linnean Society, London, Transactions. 
Magasin ^e Zoologie (Guerin) Mollusca, 1830-1846. 
Mineralogische Gesellschaft, St. Petersburg, Verb., 1848-9. 
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