IQ CATALOGUE OF AUTHORS 
Description of a species of Helix newly discovered in the Unit/ J 
States. In the same Journal. Vol. iv. p. 241. 
Conrad, Timothy A. Philadelphia, Penn. American Marini 
Conchology, or descriptions and colored figures of the Shells 
of the Atlantic coast of North America. 8vo. pp. 72, 16 plates. 
Philadelphia, 1831. 
New Fresh-Water Shells of the United States, with colored 
illustrations, and a Monograph of the genus Anculotus of Say, 
also a Synopsis of the American Naiades. 12mo. pp. 76, 
8 plates. Philadelphia, 1834. 
De Kav, James E., M. D. New York. A Report on the Zoology 
of Neio York, containing a Catalogue of the Animals of that 
State, being a part of the Annual Report on the Geological 
Survey for 1810, pp. 7 — 36. Document of the Assembly of 
New York, No. 50. Albany, January, 1840. 
Zoology of New York ; or the New York Fauna. Part V. Mol- 
lusca. 4to. pp. 270, 40 plates. Albany, 1843. Published by 
order of the Legislature of New York. 
Gould, Augustus A., M. D. Boston, Massachusetts. A Mon- 
ograph of the species of Pupa found in the United States, 
with figures. Boston Journal of Natural History, Vol. iii. 
pp. 395 — 404. July, 1840, and Vol. iv. pp. 351 — 360. 
Jan. 1841. Same in pamphlet form. 
Results of an Examination of the Shells of Massachusetts, and 
their Geographical Distribution. Same Journal. Vol. iii. pp. 
483 — 494. November, 1840. 
A Report on the Invertebrata of Massachusetts, comprising the 
Mollusca, Crustacea, Annelida, and Radiata, pp. 373, 8vo. 
with figures. Boston and Cambridge, 1841. Published by 
order of the Legislature of Massachusetts. 
Green, Jacob, M. D. Professor of Chemistry in Jefferson Col- 
lege, Pennsylvania. Note annexed to a Memoir, containing 
a description of Helix Pennsylvania. Contributions of Mac- 
lurian Lyceum, No. 1, p. 8. Philadelphia. January, 1827. 
Notes of a Naturalist. Doughty's Cabinet of Natural History, 
Vol. ii. p. 291, and Vol. iii. p. 35. Philadelphia, 1833. 
Haldeman, S. Stehman. Columbia, Pennsylvania. A Mono- 
graph of the Limniades and other Fresh- Water Univalve Shells 
