On September 29th, 1961, I observed an unidirectional serial flight of Lampides boeticus in downtown Tokyo. From 2.45 to 3. 5 p.m., 66 blues were counted flying SE-NW in a constant stream across 30 metre front. Weather fine, wind easterly, temperature 29℃, humidity 47%.
Un male et une femelle d'une forme aberrante aux ailes semi-transparentes ont eclos parmi une vingtaine de Achillides (Papilio) bianor dehaani C. & R. FELDER eleves par l'auteur. L'observation microscopique explique la malformation des ecailles : fig. 3.