C. W.  Johnson, ?A supplementary list of the Diptera of New Jersey?, Entomological News, vol. May 1904, pp. 157-163, 1904.

C. W.  Johnson, ?A revised list of the Diptera of Bermuda?, Psyche, a Journal of Entomology, vol. August 190, pp. 76-80, 1904.

C. F.  Baker, ?Reports on Californian and Nevadan Diptera, I?, Invertebrata Pacifica, vol. 1, pp. 17-40, 1904.