LIST OF WORKS 



CONTAINING THB 



CONCHOLOGICAL WRITINGS OF THOMAS SAY. 



1. The article " Conchology, " from the 4th vol. of the three American 



editions of Nicholson's British Encyclopedia of Arts and Sciences. 

 Philadelphia, 1816, 1818, 1819. 



2. A letter on Ocythoe punctata, in the Philosophical Transactions of the 



Royal Society. 1819. 



3. Numerous articles in the Journal of the Academy of Natural Sciences 



of Philadelphia, viz : 

 Vol. I. Descriptions of seven species of American Fresh Water and 

 Land Shells, not noticed in the systems. May, 1817. 

 The same concluded. June, 1817. 

 Descriptions of new species of Land and Fresh Water Shells of the 



United States. Oct., 1817. 

 Account of two new genera, and several new species of Fresh Water 



and Land Shells. June, 1818. 

 Description of a new genus of Fresh Water Bivalve Shells. Decem- 

 ber, 1818. 

 Vol. II. Descriptions of Univalve Shells of the United States. Janu- 

 ary, 1821. 

 An account of some of the Marine Shells of the United States. 



July, 1822. 

 The same continued. July, 1822. 

 The same concluded. July, 1822. 



Descriptions of some Univalve Terrestrial and Fluviatile Shells of 

 the United States. Dec. 1822. 

 Vol. IV. On a new species of Modiola. May, 1825. 

 Vol. V. Descriptions of some new species of Fresh Water and Land 

 Shells of the United States. Sept., 1825. 

 Descriptions of Marine Shells recently discovered on the coast of 

 the United States. Feb., 1826. 



4. The "MoUusca" in the Appendix to Vol. II. of Major Long's Second 



Expedition to the source of St. Peter's River, &c. &c. Phila- 

 delphia, 1824. 



