Post-petiole: in Hymenoptera, that part of abdomen behind petiole. Post-retinal: the fibres arising from the facets of the compound eye and extending into the ganglionic plate. Post-scutellum: the fourth and posterior sclerite of the dorsum of the thoracic rings. Post-sutural: in Trichoptera, the little plate behind the scutellum of mesothorax: = post-scutellum. Poststigmatal: that portion of the marginal cell beyond the stigma in bees: = 2d radial 1 (Comst.). Post-stigmatal primary tubercle: on thoracic segment of caterpillars; sub-primary, stigmatal, posterior; it is III of the thorax and not present on abdomen (Dyar). Post-subterminal: following the s. t. line in Lepidoptera. Post-sutural bristles: in Diptera, dorsal bristles behind transverse suture. Post-terga: applied to the posterior scutes of the segments of Coleopterous larvae. Post-triangular cells: = discoidal areolets; q.v. Post-vertical cephalic bristles: in Diptera, are in the middle of upper part or Occiput. Pouch: in Trichoptera, a depressed, usually longitudinal area in a wing. Prae- or Pre-: anterior to; before. Praebrachial: a longitudinal vein in middle of an Ephemerid wing; usually forked: no. 6 of some systems. Praecostal spur: a false vein in costal angle at base of secondaries. Prae-dorsum: = prophragma: q.v. Prae-labrum: in Diptera = clypeus: q.v. Praeocular: before the eyes. Praeputium: the external membranous covering of penis: specifically a spherical muscular mass at base of penis in some Orthoptera. Prae-scutellum: a sclerite, rarely present, between the meso-scutum and meso-scutellum. Prae-scutum: the first of the four divisions of the notum of the thoracic rings. Prae-subterminal: preceding the s.t. line in Lepidoptera. Prae-terga: the anterior thoracic scutes in coleopterous larvae. Prae-tornal: preceding the tornus (q.v.) in Lepidoptera. Prasinus: grass-green [apple green]. Pratinicolous: frequenting or living in grassy meadows or bogs. Pre-alar callus: a small swelling or projection before the root of wings, just back of outer ends of transverse suture, in Diptera. Pre-anal: above or before the anal opening. Pre-anal plate or lamina: = supra-anal plate; q.v. Pre-antennal: anterior to or before the antenna. Pre-apical: before the apex. Pre-balancer: = pre-halter: q.v. Pre-basilar: before the base. Precocious stages: generally applied to all stages of development from the fertilized egg to the pupa. Precurrent: continuous: entire: complete: said of a vein. Predaceous: applied to insects that live by preying upon other organisms. Predatory: = predaceous: q.v. Pre-eruciform: before the caterpillar stage: specifically applied to the early larvae of some Proctytrypidae. Preformation: the doctrine of growth or development from already existing rudiments; opposed to epigenesis: q.v. Pre-furca: "the stem vein in front of a fork, that reaches back to where itself forks from another vein"; Diptera.