An amateur's guide to the study of the genitalia of Lepidoptera, by the Amateur Entomologists' Society. Pp. 16, 15 text‐figs. 8vo.Wasps. An account of the biology and natural history of solitary and social wasps with particular reference to those of the British Isles, by J.P.Spradbery. Frontis., 28 pls., 36 tabs., 131 text‐figs. 8vo.The wasps, by H.E.Evans and M.J.W.Eberhard. Pp. 265, 122 text‐figs