Normal. According to rule—not exceptional.
Ocelli. Two, four, or six minute circular simple organs, on the head of the male: probably organs of vision. In the Monophlebidæ they would seem to be replaced by a smooth rounded protuberance behind the eye. (Plate i., Fig. 14, oc.; [Plate VIII], Fig. 2, k, m; [Plate XXI], Fig. 2, b.)
Ovisac. The cottony bag or nest formed by certain species of Lecanidinæ and Coccidinæ for the reception of their eggs. ([Plate XII], Fig. 1, a, b, c; [Plate XIX], a, b, c.)
Peduncle, pedunculated. A stalk; stalked.
Pellicle. The skin of an earlier stage, cast off at each metamorphosis; used by the Diaspidinæ and by one genus of Lecanidinæ in the formation of the puparium or test. ([Plate I], Fig. 3, a, b; [Plate VII], Fig. 2, b.)
Polymerous. Many-jointed.
Pupa. The last stage of the male insect before emerging winged.
Puparium. The shield, covering, or "scale" of the Diaspidinæ. ([Plate I], Fig. 3, e; Plates iv., v., vi.)
Rostral setæ. Three or, in a few cases, four long, fine, curling, tubular bristles springing from the rostrum, and often passing through a mentum; used for insertion into the tissues of a plant and sucking their contents. ([Plate I], Fig. 5; [Plate VI], only one being here shown, from the smallness of the drawings.)
Rostrum. A more or less conical, tubular, projecting organ, or beak, protruding from the under-side of the cephalic region, or between the first pair of feet. It is absent in the adult female Cœlostoma. It is the "mouth" of the insect. ([Plate I], Fig. 5; [Plate IV], Fig. 5.)