hymenocaris

[Pref. hymeno-, and Lat. car is Gr. karis a small crustacean, probably a shrimp or prawn.] Palæont.: A genus of crustaceans, order Phyllopod a. Hymenocaris vermicauda occurs in the Upper Cam brian age at Festiniog and Dolgelly. hy-měn-o-dic-ty-on, s. [Pref. hymeno-, and dicty on a net.] Bot.: A genus of Cinch on aceæ, family Cinch on i de. The species are ornamental trees, twenty to thirty feet high. The inner bark of Hymenodictyon excelsum, an East Indian shrub, is as bitter and astringent as Peruvian bark. It is used for tanning. hy-měn-og-en-ỹ, s . [Pref. hymeno- , and Greek gennaō to produce.] Physiol.: The production of membranes by the simple contact of two liquids, as albumen and fat, when the former gives a coating to the globules of the latter. ( Dunglison .) hy-měn-olô-gỹ, s . [Pref. hymeno- , and Greek logos a discourse; Fr. hyménologie . ] Anat .: The branch of anatomical science which treats of the membranes. hy-měn-ô-mỹ-çē-tēş, s. pl. [Pref. hymeno-, and Gr. mykās (gen it. mykētos ) =a mushroom.] Bot.: An order of fungals, having the spores generally quaternate on distinct sporophores. Called also Agaric aceæ (q. v.). It is divided into six sub-orders: Agaric in i, Polypore i, Hydnei, Auricular in i, Clavati, and Tremellini. pl. of pteron =a wing.] Hymenophyllum Tunbridgense. 1. Entom.: An order of insects, sub-cla Metabola. They have four wings, all membranous, with the nervures few, or in some cases wanting. Mouth with mandibles, sometimes with a suctorial organ in addition, the latter formed by the united maxillæ and labrum. Females either with an ovipositor or a sting. Metamorphoses complete, the larvæ generally footle , and requiring to be fed by the parent insects. If intelligence fix the place of an order in the system, the Hymenoptera containing the bees, the ants, ., should stand at the head of the Annulose sub-kingdom. Latreille divided the order into two sub-orders: Terebrant i a, in which the females have an auger; and Aculeata, in which there is a sting. The Terebrant i a had two sub-sections Securifera and Pupivora; and the Aculeata fourHeterogyne, Fo ores, Diploptera, and An tho phil a. Swains on's arrangement was into the tribes-Apides, Sphecides, Ichneumon ides, Cynipsides, and Tenthredines. Another division is into Securifera, in which the abdomen is attached to the thorax by its whole breadth, and Petiolata, in which the two are connected by a more or le slender footstalk. Under the first are the tribes Phyllophaga and Xylophaga; under the second, Terebrant i a and Aculeata. 2. Palæont.: The order does not occur before the Secondary, if not even the Tertiary, period.