Xvi AUTHORITIES. 



Macquart, J. — Dipteres Exotiques nouveaux ou peu Connus. 2 vols, en 

 5 parties, et 5 supplements. Paris, 1838-1855. With numerous 

 plates. (Published originally in the Memoires de la Societe des 

 Sciences et des Arts de Lille, 1838-1855.) 



Both works, especially the second, contain numerous new Ameri- 

 can species. 

 Meigex, F. W. — Systematische Beschreibung der bekannten europaischen 

 zweiflugeligen Insecten. 7 vols. Aachen and Hamm, 1818-1838. 



Although this work contains only European species, many of them 

 are common to both continents. 

 Morris, Miss. — In the Proceedings of the Academy of Natural Sciences of 

 Philadelphia, ■vol. iv. p. 194 (1849), some remarks have been pub- 

 lished by her on the habits of Cecidomyia culmicola, n. sp. 

 Newmann, Edw. — Entomological Notes. (In the Entomological Magazine, 

 V, p. 373.) 



Dimeraspis podagra, n. sp. 

 Olivier, G. A. — Several entomological articles in the Encyclopedic Me- 



thodique are by him, and contain descriptions of American species. 

 Palisot de Beauvois, A. M. F. F. — Insectes recueillis en Afrique et en 

 Amerique, etc. in fol. Paris, 1805-21. With plates. 



Several Tabani, one Chrysops, and one Syrphideous insect from 

 N. America, are described and figured. 

 Pallas. — Reisen durch verschiedene Provinzen des Russischen Reichs. 

 1st vol. St. Petersburg, 1771. 



On page 475 a Culex caspius is described, which Curtis (Ins. of 

 Capt. Ross's voy.) identifies with an American species. 

 Rondani, Camillo. — Tabanus ckeliopterus, n. sp. from Carolina, described 



by him in the Annali delle Scienze Naturale di Bologna, 1850. 

 St. Fakgeaf/ and A. Serville, authors of several articles in the Encyclo- 

 pedic Methodique, in which American diptera are mentioned. (No 

 new species.) 

 Say, Th. — Description of Dipterous Insects of the United States. (In the 

 Journal of the Academy of Natural Sciences in Philadelphia, vol. hi. 

 p. 9-54 and 73-104. 1823.) 

 " Description of North American Dipterous Insects (1. c. vol. vi. p. 



149-178 and 183-188. 1829-30. 

 " Keating's Narrative of an Expedition to the Source of St. Peter's 

 River, under the command of S. H. Long. 2 vols. Philadelphia, 

 1824. (Insects described by Say in the Appendix to the 2d vol. ; 

 diptera from p. 357 to p. 378.) 

 " New Species of N. American Insects, found by Joseph Barabino in 

 Louisiana. Indiana, 1832. 



Sciara dimidiata, Dilophus stygius, n. sp. 

 " American Entomology. 3 vols. With plates. Philadelphia, 1824, 

 25, 28. 



