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C. W.  Johnson, ?Fauna of New England. 15. List of the Diptera or two-winged flies?, Occasional Papers of the Boston Society of Natural History, vol. 7(15), p. 326 pp, 1925.

F. R.  Cole, ?Notes on the Diptera of Laguna Beach California?, Journal of Entomology and Zoology, vol. 1925, p. ?58, 1925.