Insectes affectant l'orange . de la femelle —l'échelle de la femelle est plate, blanchâtre ou gris clair en couleur, et avec les exuviae central ou presque (Fig. Ic). EXU-viae jaune orange terne; la première peau montrant habituellement la segenta-tion distinctement, la seconde peau plus ou moins couverte de sécrétion, apparaissant seulement comme un cercle orange entourant la première peau.échelle Ventrale un simple film appliqué à l'écorce de plante. Diamètre de l'échelle entièrement formée, 2 (0,08 pouce). * * * ?Oeufs.—Les oeufs sont de couleur jaune très claire. •?échelle de l'homme.—l'échelle de l'homme est légèrement allongée, avec

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Insects affecting the orange . of the Female —The scale of the female is flat, whitish, or lightgray in color, and with the exuviae central or nearly so (Fig. Ic). Exu-viae dull orange yellow; the first skin usually showing the segmenta-tion distinctly, the second skin more or less covered with secretion, oftenappearing only as an orange-colored circle surrounding the first skin.Ventral scale a mere film applied to bark of plant. Diameter of fully-formed scale, 2 (.08 inch). * * * ?Eggs.—The eggs are very light yellow in color. •?Scale of Male.—The scale of the male is slightly elongated, with thelarval skin nearly c(Mitral; it is snowy white with the larval skin lightyellow; longest diameter, 1 (.04 inch) (Fig. 7 h). ?•Male.—The adult male is yellow, mottled with reddish brown, centralpart of thoracic band reddish. Other characters represented in Fig. la. .?? Hahitat.—This is a very common European species which infestsmany different plants, and it is spread throughout our country from the. ilfxM FG. 7.—Aitpidiotu3 nerii Douch6. 7, Rcali3 on leavfs of ncacia, natural alze; a, adult male, en-la igcd; 6, ecalo oluiaK, inl.iiged; c, scolo of fomalr, culaij^eil. (After Comstock.) Atlantic to the Pacific, and from the Great Lakes to the Gulf of Mexico.I have found it more abundant on acacias in California than elsewhere, 36 INSECTS AFFECTING THE ORANGE. and for a time believed tliat it bad bceu introduced from Australia witbtbis tree. Many trees were found the leaves of which were comi)!etelycovered with the scales, appearing as if they had been coated witbwhitewash. Leaves of magnolia were received from Mr. C. II. Dwindle, Berkeley, Cal., which were infested to a similar extent. The followingis a list of the plants upon which I have studied tbis species: Acacia, Magnolia, oleander, niaple. Yucca, plum, cherry, currant, and Melia{Melia azederaoh) iu California; oleander in Utah; English iv3 in aconservatory at Ithaca, N. Y.; ivy and China tree from Dr. R.

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