Hovarth, G. 1912. Revision of the American Cimicidæ. Ann. Mus. Nat. Hungarici, x, p. 257-262.
Howard, C. W. 1908. A list of the ticks of South Africa, with descriptions and keys to all the forms known. Ann. Transvaal Mus. 1, p. 73-170.
Howard, C. W. and Clark, P. F. 1912. Experiments on insect transmission of the virus of poliomyelitis. Journ. Exper. Med. xvi, p. 805-859.
Howard, L. O. 1899. Spider bites and kissing bugs. Pop. Sci. Mo. lv, p. 31-42.
---- 1900. A contribution to the study of the insect fauna of human excrement. Proc. Wash. Acad. Sci. ii, p. 541-604.
---- 1901. Mosquitoes, how they live, how they carry disease, how they are classified, how they may be destroyed. 8vo. New York, Doubleday, Page & Co. (xv + 241 p.)
---- 1909. Economic loss to the people of the United States, through insects that carry disease. U. S. Dept. Agric. Bur. of Ent. Bul. 78, p. 1-40.
Howard, L. O., Dyar, H. G. and Knab, F. 1913-. The mosquitoes of North and Central America and the West Indies. Vol. I. A general consideration of mosquitoes, their habits, and their relations to the human species. 4o. Carnegie Institution of Washington (vii + 520 p.).
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