430 LEA 



eighteen new species of the genus Symphynota, now separated 

 from the family of Naiades, containing nine species. Tr. Am. 

 Phil. Soc. (n. S.) 1829, III. pp. 15, 72, fig. Phil. Mag. VII. p. 376. 

 ~-Isis, 1834, VIII. p. 805. 



4. Observations on the genus Unio, together with Descriptions of 

 new genera and species in the families Naiades, Conchce, Coli- 

 macea, Lymnceana, Melaniana and Peristomiana, with coloured 

 plates. Trans. Am. Phil. Soc. Mag. Zool. and Bot. 1837, I. 

 p. 28^. Sill. Am. Journ. XXVII. 2, p. 371. 



5. Contributions to Geology. Philad. 1833, 8. Sill. Am. Journ. 

 XXV. p. 413. 



6. Description of six new species of the genus Unio. Trans. Am. 

 Phil. Soc. ser. 2, III. p. 259. 



7. On a new genus of the family of Naiades. Trans. Am. Phil. Soc. 

 ser. 2, III. p. 403. 



8. Observations on the Naiades. Trans. Am. Phil. Soc. ser. 2, IV. 

 p. 63 ; V. p. 23. 



9. On a new genus of the family Melaniana of Lamarck. Trans. 

 Am. Phil. Soc. ser. 2, IV. p. 122. 



10. Descriptions of new Freshwater and Land Shells. Trans. Am. 

 Phil. Soc. ser. 2, VI. p. 1 ; VIII. p. 163; IX. pp. 1, 275. 



11. On the Patella amcena of Say. Trans. Am. Phil. Soc. ser. 2, 

 VII. p. 73. Sill. Am. Journ. XL. p. 31. 



12. On the Oolitic Formation in America, with descriptions of some 

 of its Organic Remains. -Trans. Am. Phil. Soc. ser. 2, VII. p. 251. 

 Sill. Am. Journ. XL. p. 41. Rev. Zool. 1840, p. 308. 



13. On nineteen new species of Colimacea. Trans. Am. Phil. Soc. 

 ser. 2, VII. p. 455. Sill. Am. Journ. XL. p. 28. 



14. A Synopsis of the family of Naiades. 8. Philad. 1838. 



15. On traces of a Fossil Reptile (Sauropus primcevus) found in 

 the Old Red Sandstone. Rep. Brit. Assoc. 1849, Sect. p. 56. 



16. On three new species of Indian Freshwater Eivalves, with Notes 

 by W. H. Benson. J. A. S. B. IV. p. 450. 



17. Description of twelve new species of Uniones. Philad. 1843, 

 8. (1 leaf.) 



LEA (M. Carey). 



1. On the First or Southern Coal Field of Pennsylvania. Sill. Am. 

 Journ. XL. p. 370. 



LEACH (William Elford). 



1. Analysis of " Prodrome d'une nouvelle Distribution systema- 

 tique du Regne Animal par H. de Blainville." Thompson, Ann. 

 Phil. 1817, IX. p. 221. 



2. Analysis of" Memoires sur les Animaux sans vertebres par J. C. 

 Savigny." Thompson, Ann. Phil. 1817, IX. p. 226. 



3. Analysis of " Histoire naturelle de Crustaces des Environs de 

 Nice par A. Risso" Thompson, Ann. Phil. 1817, IX. p. 227. 



4. Analysis of"Le Regne Animal distribue d'apres son organisa- 

 tion, etc., par G. Cuvier." Thompson, Ann. Phil. 1818, X. 

 p. 127. 



