Oviduct: the tube through which the egg passes from ovarian tubes into vagina: sometimes used in the sense of ovipositor: q.v. Oviform: egg-shaped. Oviparous: where reproduction is through eggs laid by the female. Oviposition: the act of depositing the eggs. Ovipositor: the tubular or valved structure by means of which the eggs are placed; usually concealed; but sometimes extended far beyond the end of the body. Oviscapt: = ovipositor; q.v. Ovivalvule: in Ephemeroptera; is an appendage of the female reproductive organs. Ovoviviparous: when living young are born from eggs which are hatched in the body of the parent. P Pacific coast humid area: is that faunal area of the transition zone comprising the western parts of Washington and Oregon between the Coast Mountains and Cascade range: parts of northern California and most of the coast region from near Cape Mendocino south to the Santa Barbara Mountains. To the south and east it passes into the arid transition and in places into the upper Sonoran. Pad: the pulvillus, or that part of it which is capable of extension and retraction in some Coleoptera. Paddle: the flattened joints of posterior tarsi in aquatic Hemiptera. Paedogenesis: reproduction in the sexually immature or larval stage. Paedogenetic: reproducing in the sexually immature or larval stage. Pagina: the surface of a wing: P. superior, is the upper surface; P. inferior, the lower surface: in Orthoptera, the external flattened surface of the caudal femora. Pagiopoda: Heteroptera, in which the posterior coxae are not globose and the articulation is a hinge joint: see trochalopoda. Pagiopodous: those Heteroptera which have the coxae of the hind legs hinged and the femora grooved. Pala: the shovel-shaped tarsal joints in many aquatic Heteroptera. Palate: = hypopharynx; q.v. Paleace: chaff or chaffy: = paleaceous. Paleaceous: chaffy in appearance. Palearctic: relating to that part of the earth's surface including Europe, Africa north of Sahara, and Asia as far south as the southern edge of the Yang-tse-Kiang watershed and the Himalayas, and west to the Indus River. Paleodictyoptera: an ordinal name suggested by Scudder for Paleozoic insects which cannot be assigned to existing orders. Paleolepidoptera: haustellate Lepidoptera in which the mandibles are distinct and the pupa is free: includes the Micropterygidae only: see protolepidoptera and neolepidoptera. Pallescent: becoming pale or light in color or tint. Pallette: the disc-like structure composed of three tarsal joints, on the anterior feet of male Dytiscidae. Pallid: pale or very pale. Pallide-flavens: pale or whitish yellow. Pallidus: of a pale, cadaverous hue [a very dilute brown pink]. Pallium: an erectile membrane partially closing the open cavity formed by the walls of the sub-genital plate in Melanopli. Palma: the basal segment of the anterior tarsus when it is broadened or specifically modified.