8 



102. Osten Sacken, R. — Catalogue of the described Diptera of Nortli 

 America. 1858. Svo. pp. 116. (M. C. in.) 75 cents. 



141. Loe'w, H. — Monograph of the Diptera of North America. Part I. 

 Edited by R. Osten Sacken. 1862. Svo. pp. 246, and two plates. $1 50. 



171. Loe^v, H. — Monograph of Diptera of North America. Part II. Edited 

 by R. Osteu Sacken. 1864. 8vo. pp. 340 and 5 plates. $2 50. 



178. De Saussure, H. — Monograph of North American Hymenoptera. 

 Edited by E. Norton. Part I. 8vo. (In press.) 



1S9. Scudder, S. H. — Monograph of N. American Orthoptera. Svo. (In 

 preparation.) 



148. Uhler, P. R. — Monographof North American Homoptera and Hemip- 

 tera. Svo. (In preparation.) 



BOTANY. 



22. Gray, A. — Plantse Wrightianje Texauo-Neo-Mexicanae. Part I. 1852. 

 4to. pp. 146, and 10 plates. (S. C. in.) 



42. Gray, A. — Plants Wrightianse Texano-Neo-Mexicanae. Part II. 1S53. 

 4to. pp. 120, and 4 plates. (S. C. v.) 



32. Harvey, "W. H. — Nereis Boreali-Americana, or Contributions to a 

 History of the Marine Algae of North America. Part I. Melanospermeae. 

 1852. 4to. pp. 152, and 12 plates. (S. C. in.) $3. 



43. Harvey, W, H. — Nereis Boreali-Americana, or Contributions to a 

 History of the Marine Algae of North America. Part II. Rhodospermae. 1853. 

 4to. pp. 262, and 24 plates. (S. C. v.) $5. 



95. Harvey, W. H. — Nereis Boreali-Americana, or Contributions to a 

 History of the Marine Algae of North America. Part III. Chlorospermeae. 

 4to. pp. 142, and 14 plates. (S. C. x.) $3, in cloth. 



96. Harvey, W. H. — Nereis Boreali-Americana, etc. By W. H. Harvey. 

 The whole three parts complete in one volume. 4to. pp. 556, and 50 plates. 

 Bound in cloth, colored plates, $20. 



46. Torrey, J. — Plantae Fremontianse, or Description of Plants collected 

 by Colonel J. C. Fremont in California. 1853. 4to. pp. 24, and 10 plates. 

 (S. C. VI.) 



60. Torrey, J. — Observations on the Baiis mariiima of Linnaeus. 1S53. 

 4to. pp. 8, and one plate. (S. C. vi.) 



61. Torrey, J. — On the Darli/tgtonia californica : a new pitcher plant from 

 Northern California. 1853. 4to. pp. 8, and one plate. (S. C. vi.) 



PALiEONTOLOGY. 



14. Gibbes, R. "W. — A Memoir on Mosamurm, and the three allied new 

 genera, Jlalcodus, Conosaurtis, and Amphorosteus. 1850. 4to. pp. 14, and 

 3 plates. (S. C. ii.) 



41. Leidy, J. — Memoir upon the Extinct Species of Fossil Ox. 1852. 4to. 

 pp. 20, and 5 plates. (S. C. v.) $1. 



58. Leidy, J. — The Ancient Fauna of Nebraska ; or, a Description of Re- 

 mains of Extinct Mammalia and Chelonia from the Mauvaises Terres of Ne- 

 braska. 1853. 4to. pp. 124, and 25 plates. (S. C. vi.) $5. 



