49. Anthrax pelops, n. s. Mas. Ferruginea, thoracis margine rufo piloso, pectore abdomineque nigris, abdomine fasciis duabus, maculis duabus apicalibus, plagaque ventrali subtrigona argenteis, alis cinereis, basi costaque nigris.
Male. Closely allied to A. Tantalus. Dark ferruginous. Head above, antennæ, pectus, abdomen, and legs black; thorax bordered with red hairs; pectus with a silvery dot on each side; abdomen with red hairs on each side at the base, with two silvery bands, with two silvery apical spots, and with a ventral, nearly triangular, silvery patch; wings cinereous, black at the base and along five-sixths of the length of the costa, veins and halteres black. Length of the body 8 lines; of the wings 18 lines.
50. Anthrax semiscita, Walk. See Vol. I. p. 118.
51. Anthrax degenera, Walk. See Vol. I. p. 15.
Gen. Geron, Meigen.
52. Geron simplex, n. s. Mas. Ater, antennis pedibusque nigris, alis subcinereis, halteribus fulvis.
Male. Deep black. Eyes bright red; proboscis a little longer than the thorax; antennæ and legs black; wings slightly greyish, veins black; halteres tawny. Length of the body 2½ lines; of the wings 5 lines.
Fam. EMPIDOÆ, Leach.
Gen. Hybos, Fabr.
53. Hybos bicolor, n. s. Mas. Fulvus, ore antennisque testaceis, abdomine, femoribus posticis apice tibiisque anticis piceis, tarsis anterioribus ferrugineis, alis obscure cinereis.