Robert Leslie Usinger: Autobiography of an Entomologist.By R.L.Usinger, edited by E.G.Linsley and J.L.Gressitt. Pp. xiii, 330, frontis., 27 text‐figs., 8vo.The Horse Flies of Europe (Diptera, Tabanidae).By M.Chvala, L.Lyneborg and J.Moucha. Pp. 500, 8 pls., 12 tabs., 164 text‐figs.