@article {13115,
	title = {Western Diptera: Descriptions of new genera and species of Diptera from the region west of the Mississippi and especially from California},
	journal = {Bulletin of the United States Geological and Geographical Survey of the Territories},
	volume = {3},
	year = {1877},
	pages = {189{\textendash}354},
	author = {R. Osten Sacken}
}
