Occasional Papers of the Museum of Zoology 73 



1834* Conrad, T. A., Description of some new species of fresh 

 water shells from Alabama, Tennessee, etc. (Amer. Journ. 

 Sci., XXV, 1834, pp. 338-343). 

 3834-1835 Conrad, T. A., New Fresh-water Shells of the United 

 States, 1834 (May) ; Appendix, 1835. 



1834 Lea, L, Observations on the Naiades, and descriptions of 

 new species of that and other families (Trans. Amer. Phil. 

 Soc, V, 1834 (Aug. or Sept.), pp. 23-119). 



1835 Ferussac, a. E. de. Observations, etc., sur la Synonymic 

 des Coquilles Bivalves de L'Amerique Septentrionale (Mag. 

 de Zool., 1835, pp. 1-36). 



3835-1840 Conrad, T. A., Moncgraphy of the Family Unionidse. 



1836 ScHLUETER, F., Verzeichnis meiner Conchylien. 



1838 LEa, I., Description of new fresh water and land shells 

 (Trans. Amer. Phil. Soc, VI, 1838, pp. I-I54). 



1840 SwAiNSON, W., A Treatise on Malacology, London, 1840. 

 1840-1841 Lea, L, Descriptions of New Fresh Water and Land Shells 

 (Proc. Amer. Phil. Soc, L 1840, pp. 284-289). 

 Continuation (ibid., II, 1841, pp. 30-34, 81-83). 



1842 Lea, L, Description of New Fresh-water and Land Shells 

 (Trans. Amer. Philos. Soc, VIH, 1842, pp. 163-252). 



1843 Lea, L, Description of Twelve New Species of Uniones 

 (Proc Amer. Phil. Soc, IV, 1843, p. 11). 



1843 DeKay, J. E., Zoology of New York, V, MoUusca. 



1845 Le.\, I., Descriptions of New Fresh-water and Land Shells 



(Proc Amer. Phil. Soc, IV, 1845, pp. 162-168). 

 1846-1849 Herrmannsen, a. N., Indicis Generum Malacozoorum Pri- 



mordia, 1846- 1849; Supplement, 1852. 

 1848 Lea, I., Description of New Fresh-water and Land Shells 



(Trans. Amer. Phil. Soc, X, 1848, pp. 67-101). 

 1852 Agassiz, L., Uber die Gattungen unter den nordamerikan- 



ischen Najaden (Arch, fur Naturgesch., XVIII, 1852, pp. 



41-50). 



1852 Lea, L, Descriptions of New Species of the Family Union- 

 idae (Trans. Amer. Phil. Soc, X, 1852, pp. 253-294). 



1853 Conrad, T. A., Synopsis of the Family of Naiades of North 

 America (Proc Acad. Phila., VI, 1853). 



1857 Lea, I., Description of Twenty-seven New Uniones from 

 Georgia (Proc. Acad. Phil., IX, 1857, pp. 169-171). 



1858 Lea, I., Description of New Unios from Tennessee, etc. 

 (Proc. Acad. Phila., 1858, pp. 40-41)- 



1858 Adams, H. and A., The Genera of Recent Mollusca, II, 

 pp. 489-509- 



