@article {2181,
	title = {Descriptions of North American dipterous insects},
	journal = {Journal of the Academy of Natural Sciences of Philadelphia},
	volume = {6},
	year = {1829},
	pages = {149-178, 183-188},
	keywords = {Copestylum, Copestylum (Copestylum), Copestylum (Copestylum) marginatum (Say)},
	url = {http://www.biodiversitylibrary.org/bibliography/34362},
	author = {Say, T}
}
@book {2877,
	title = {American entomology, or descriptions of the insects of North America},
	volume = {1},
	year = {1824},
	pages = {101 pp., pls. 1-18},
	address = {Philadelphia},
	url = {http://www.biodiversitylibrary.org/bibliography/9156},
	author = {Say, T}
}
@article {4,
	title = {Descriptions of dipterous insects of the United States},
	journal = {Journal of the Academy of Natural Sciences of Philadelphia},
	volume = {3},
	year = {1823},
	month = {04/1823},
	pages = {9-32, 33-64, 73-104},
	url = {http://books.google.com/books?id=7kEWAAAAYAAJ\&lpg=PA9\&ots=O03u9CEVBv\&dq=Descriptions\%20of\%20dipterous\%20insects\%20of\%20the\%20United\%20States\&pg=PA9$\#$v=onepage\&q=Descriptions\%20of\%20dipterous\%20insects\%20of\%20the\%20United\%20States\&f=false},
	author = {Say, T}
}
