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Show 466 DR. F. B. WHITE ON T H E [May 7, Genus Piezostetho affine. Nomen a Maori " hapa " (contortus). Obs. In Piezostethus, to which the genus is allied, the males have also unsymmetrical hind bodies-a fact, by the way, that I do not see noticed in any of my books. 6. HAPA CONTORTA, sp. n. (Plate XXXI. fig. 1.) H. piceo-nigra, pilis brunneis vestita; capitis apice, antennis, pronoti margine postico, elytris, pedibus abdomineque plus minus piceo-brunneis; rostro, antennarum articulis duobus ultimis, cuneo ad basin, trochanteribus, femoribus ad basin, tibiis basin apicemque et tarsis plus minus dilutioribus; abdomine obscuriore variegato. Macropterorum clavi disco, corii maryine antico basin versus, et macula ad medium basale membraneepaullo dilutioribus; membrana fusco-luteo-brunnea, venis obscurioribus. S $ . Long. 3-3|, lat. H m. m. Hab. in excelsioribus insulae, ad " Diana's Peak." I have seen but a single macropterous specimen, and that rather mutilated. 7. CARDIASTETHUS BICOLOR, sp. n. C. niger, capillis pallidissime brunneis vestitus; antennis, apice, elytris pedibusque luteo-brunneis; capite nitido clypeo dilutiore; rostro (apice excepto), antennarum articulis 2 ultimis, elytrorum suturis, margine interiore embolii, margine interiore discoque cunei plus minus fusco-brunneis; membrana luteo-fusca. Capite leevi; clypeo sat angusto; pronoto (callo excepto), scutello elytrisque subtiliter punctatis. Long, circa 2\ m. m. Hab. in intermediis insulae-" Plantation." Rather closely allied to C. testaceus ; but, besides differing in colour, C. bicolor is a narrower and more slender insect. 9. MYRMEDOBIA FULIGINEA, sp. n. M. atra ; antennis piceis, articulo 1° dilutiore ad basin, articulo 2° ad basin medium apicemque albido, articulo ultimo ad apicem rufo-piceo; pedibus piceo-nigris, femoribus posticis ad apicem, annulis 2 ad medium tibiarum anticarum intermediarumque, dimidio basali tarsorum omnium albidis; capite convexo ; antennis subtiliter pubescentibus, articulis 2° 3°'que subeequilongis; maxime convexo, annulo male definite, sulco transverso, nulla ; elytris margine antico anguste refiexo. 2 . Long. 1 m. m. Hab. locos editiores supra " West Lodge." 10. CALOCORIS (MEGACCSLUM) LUSTRATUS, sp. n. C. sordide stramineo-testaceus, maculis parvis fuscis rufisque et obscure notatus, capillis tenuibus adpressis pallido-vestitus; pronoto obsoletissime punctulato ; oculis, maculis |