Datana perspicua.—Egg: In general shape subpyriform; flattened at base and top, depressed centrally at vertex, the usual black spot small and indistinct, situated at the bottom of the punctiform depression; the whole surface punctured. Colour white, the lid-like top of a somewhat brighter white. Width .9 mm., height .8 mm. The egg is of the type of D. major, but resembles the type of D. ministra in coloration by possessing a discolorous lid-like top. This is the part of the shell eaten by the yound larva in hatching. Laid in masses of varying numbers on the under side of the leaves of the food plant.