BIBLIOGRAPHY OF PUBLICATIONS OF ISAAC LEA, LL. D. 1 5 



1832-34. Lea, Isaac — Contiuued. 



Ampullaria Hopetonensis, Lea, n. a., pi. xix, flff. 84 115 



Hab.: Hopoton, near Darien, Georgia, Professor Shepard. 



Paludina Georgiana, Lea, n. s., pL xix, fig. 85 116 



Hab. : Hopeton, near Darien, Georgia, Professor Shepard. 



Succinea retusa, Lea, n. s., pL xix, fig. 86 117 



Hab. : Ohio, near Cincinnati, T. G. Lea. 

 Systematic Index of the Shells Described in Mr. Lea's Memoirs : Trans. Aw. Phil. Soc, 

 volumes iii, 1 v, and v 118-119 



21. 



1834. Lea, Isaac. Observations | on the | Genus Uuio, | together with | Descriptions 



of New Genera and Species in the Families | Naiades, ConchsB, Coliraacea, 

 Lyuiuaeaua, Me- | laniaua and Peristomiana: | consisting of | four memoirs 

 read before the American Philosophical Society from | 1827 to 1834, and 

 originally published in their Transactions, | with numerous coloured plates. | 

 by Isaac Lea, | [Title] | Philadelphia: | Printed for the Author, | by James 

 Kay, Jun, and Co. • 4°. 4 leaves and pi). 233, with 46 plates. 



This volume, dedicated to Philip Houlbrooke Nicklin, M. A., is I of Dr. Lea's series of 

 "Observations on the Genus Unio," and contists of numbers 17 and 20 of this Catalogue. 

 Noticed in Amer. Journ. of Science and Arts, xvii, 1835, p. 371. 



22. 



1835. Lea, Isaac, and W. H. Benson. Characters of three new species of Indian 



freshwater Bivalves. <^Journ. Asiatic Society of Bengal, iv, 1835, pp. 450-454. 

 Article not seen. 



23. 



1836. Lea, Isaac. A | Syuopsis | of the | Family of Naiades, | by | Isaac Lea, | Mem- 



ber of the American Philosophical Society, | etc., etc. | Philadelphia: | Carey, 

 Lea and Blanchard. | London: | John Miller. | 1836. 8°. pp. viii, 1-59. 2 

 leaves. 



1 plate with colored figures of Unio spinosus, Lea. 



INTRODUCTION. 



"This systematic arrangement and synonymy was communicated to the American Philo- 

 sophical Society in July last nearly in the form in which it is now printed. It was under- 

 taken purely with the view and in the hope of clearing away the difficulties which had in- 

 cumbered one of the most interesting families of the Mollusca. * * * In attempting to 

 establish the synonymy, he has endeavoured to render the strictest justice, and if in any case 

 it is found he has failed to do this, it will be a matter of sincere regret to him. 



In the following tables there will be found in the family 300 recent species as admitted, 22 

 as doubtful, and 22 fossil; in all 344. 



Of the sub-genus Unio there are 226 species in a recent state, and 14 which I have not 

 been able to admit as certain; of fossil species 21. 



Of the sub-genus Margaritana there are 14 admitted species, and 2 which are unknown to 

 me. 



Of the sub-genus Dipsas I know of but two species, both of which are recent. 



Of the sub-genus Anodonta there are 50 admitted species, and 6 which are unknown to 

 me. Of fossil species there is one which is doubtful. 



Of the sub-genus Pleiodon there is but one species, and that recent. 



The genus Iridina has 7 species, aU recent." 



CONTEXTS. 



Introduction v 



List of Authors vii 



Division of the Family Naiades 1 



Genus Margarita - 10 



Sub-genus Unio 10 



Sub-genus l^Iargaritana 43 



Sub-genus Dipsas 47 



Sub-genus Anodonta 48 



Sub-genus Pleiodon 55 



