Lecanium (Eulecanium) caryarum, n. sp.—♀. Scale (after producing young) somewhat variable in form, from long. 6, lat. 3½, alt. 2⅔ mm., to long. 5½, lat. 4⅓ alt. 3¼ mm., the more swollen individuals probably affected by parasites; outline in transverse section nearly hemispherical, in longitudinal section more or less low-pyramidal, with the posterior slope considerably the shortest, the apex of the pyramid marked by a more or less prominent boss, sometimes inclined to be double. Colour of scale dark chestnut; sides pitted and plicate to a variable degree.