@inbook {21851,
	title = {Order Diptera (pp. 341-346) in Ashmead, W.H. Reports upon the insects, spiders, mites and myriapods collected by Dr. L. Stejneger and Mr. G.E.H. Barrett-Hamilton on the Commander Islands},
	booktitle = {Fur seals and fur-seal islands of the North Pacific Ocean. Part. IV},
	year = {1899},
	author = {Coquillett, D. W.}
}
