TRUBNER & CO., 60, PATERNOSTER ROW. 35 
Jaeger.— Class Book of Zoology: designed to afford to Pupils in Common 
Schools and Academies a Knowledge of the Animal Kingdom : with a List 
of the different Species found in the State of New York: the whole 
scientifically and systematically arranged, by Prof. B. Jaeger. 12mo, pp. 
180. New York, 1849. > 2s. 6d. 
Jaeger. —The Life of North American Insects; Illustrated by numerous 
coloured Engravings and Narratives, by Professor B..Jaeger, assisted by H. 
C. Preston, M.D. With Illustrations. 8vo, pp. 208. New York, 1855. 
cloth. 16s 
Jay. —Catalogue of Shells, in the Collection of John C. Jay, New York; with 
Eigures. 2nd edition. 4to. New York, 1839. plain 18s.; col. £1 4s. 
Jones. —Researches, Chemical and Physiological, concerning certain North 
American Vertebrata, by Joseph Jones, M.D. 4to, pp. 150, and 27 Wood- 
cuts. Washington, 1856. 9s. 
Lea. —Description of Six Species of the Genus Unio, read before the American 
Philosophical Society, November 2nd, 1827, by Isaac Lea. (Erom the 
Transactions of the American Philosophical Soc.) 8vo.- Philadelphia, 1827. 
Lea. —Observations on the Genus Unio; together with Descriptions of 18 
New Species of the Genus Symphynota, now separated from the Eamily of 
Naiades, containing 9 Species, by Isaac Lea. (Erom the Transactions of the 
American Philosophical Society, Yol. III. N. S.) 4to. Philadelphia, 1829. 
Lea.— Observations on the Genus Unio; together with Descriptions of New 
Genera and Species in the Eamilies Naiades, Conchae, Colimacea, Lymneana, 
Melaniana, and Peristomeana, by Isaac Lea. (Extracted from the Trans¬ 
actions of the American Philosophical Society, Yols. III. IY.) 2 vols. 4to. 
Philadelphia, 1834—1838. 
Lea. —Observations on the Genus Unio ; together with Descriptions of New 
Species in the Eamilies Naiades, Colimacea, Lymnseana, Melaniana, and 
Peristomiana. Read before the American Philosophical Society, and ori¬ 
ginally published in its Transactions, by Isaac Lea. Yols. IY. Y. With 
numerous Plates. 8vo. Philadelphia, 1846. 
Lea.—Description of a New Genus of the Eamily Melaniana, and. of many 
New Species of the Genus Melania, chiefly collected by Hugh Cuming, Esq., 
and now first described by Isaac Lea and Henry C. Lea. Also Descriptions 
of Eive New Species of Anodontae, collected by H. Cuming, by Isaac Lea. 
8vo. London, 1851. 
Lea.— A Synopsis of the Eamily of Naiades, by Isaac Lea, Member of the 
American Philosophical Society, &c. 3rd edition, greatly enlarged and im¬ 
proved. 4to, pp. 92. Philadelphia, 1852. boards. 18s. 
Le Conte.— Synopsis of the Coleopterous Insects of the Group iEridse, which 
inhabit the United States, by John L. Le Conte, M.D. 8vo, pp. 30. New 
York, sewed. 2s. 6d. 
Le Conte.— Descriptions of some New and Interesting Insects inhabiting the 
United States, by John L. Le Conte. Plate. 8vo. New York, 1844. Is. 
Le Conte.— On the Pselaphkhe of the United States, by John L. Le Conte. 
8vo. New York, 1848. . 2s. 
Le Conte. —On_ Platygonus Compressus : a New Eossil Pachyderm, by John 
L. Le Conte, M.D. 4 Plates. 4to, pp. 16. Boston, 1848.’ sewed. 6s. 
Le Conte.— Eragmenta Entomologica, auctore J. L. Le Conte, M.D. 4to, 
pp. 24. Boston, 1848. 3s. 6d. 
Le Conte.— An Attempt to Classify the Longicorn Coleoptera of the part of 
America North of Mexico, by John L. Le Conte, M.D. 2 Plates. 4to. 
Philadelphia, 1850. sewed. _ 6s. 6d. 
Le Conte.— Descriptions of New Species of Coleoptera from California, by 
John L. Le Conte. 8vo. New York, 1851. 3s. 6d. 
Le Conte.— General Remarks upon the Coleoptera of Lake Superior, by John 
L. Le Conte. 8vo. New York, 1852. 2s. 
3a 
