Female. Black; head and sides of the thorax and of the abdomen clothed with short black hairs; antennæ very short, 3rd joint round; legs piceous; wings blackish, dark grey at the tips and along the hind border; discal, pobrachial, 3rd externo-medial, and anal areolets with whitish streaks; radial vein undulating towards its tip; fore-branch of the cubital vein slightly curved; externo-medial veins straight; subanal and anal veins approximating closely on the hind border; hind side of the discal areolet forming a right angle, and emitting thence the stump of a vein. Length of the body 41/2 lines; of the wings 9 lines.
67. Anthrax degenera, Walk. See Vol. I. p. 15. var. Mas et Fœm. Nigra, angusta, fulvo-pilosa, capite cinereo, antennarum articulo 3° conico, pectore subargenteo, abdomine fasciis duabus ventre pedibus halteribusque fulvis, tarsis nigris, alis fuscis, apice margineque postico cinereis.
Male and Female. Black, narrow, head cinereous; 3rd joint of the antennæ conical; arista very short; thorax with tawny hairs; pectus silvery cinereous; abdomen with two lateral tawny stripes, which are broadest in the female; underside, legs and halteres tawny; tarsi black; wings brown, long, narrow, cinereous towards the tips and along the hind border; radial vein curved towards its tip; fore branch of the cubital vein slightly curved, sharply angular at its base; externo-medial veins straight; subanal and anal veins approximate on the hind border. Male. Hind femora with black tips; angle of the fore branch of the cubital vein emitting the stump of a vein.
Var. β. Female. Sides of the abdomen less tawny; wings dark brown, cinereous at the tips; fore branch of the cubital vein deeply curved, with its angle emitting the stump of a vein. Length of the body 31/2-5 lines; of the wings 8-12 lines.
This species is closely allied to A. fervida, and, like the two preceding species, approaches the Australian group (subg. Neuria), which is distinguished by the long wings with contorted veins.
68. Anthrax proferens, n. s. Mas. Atra, angusta, abdominis lateribus basalibus albo-pilosis, alis longis atris apud marginem posticum exteriorem limpidis, puncto discali albo, litura exteriore transversa albida.
Male. Deep black, slender; head clothed with short black hairs; antennæ and arista very short; 3rd joint round; abdomen with white hairs on each side at the base; wings long, deep black, limpid along the exterior part of the hind border; a white point in the discal areolet, and a little transverse whitish mark at the base of the fore branch of the cubital vein; the latter deeply curved. Length of the body 4 lines; of the wings 12 lines.
Allied to the group of which A. hyalacra is the type.
Gen. Systropus, Wied.
69. Systropus sphegoides, n.s. Mas. Niger, capite albido-testaceo, antennis apices versus lanceolatis, thorace strigis quatuor lateralibus pallide flavis, abdomine lurido basi et apicem versus nigro, petiolo longissimo, femoribus subtus tibiisque apice luridis, alis nigricante-cinereis, halteribus albidis nigro fasciatis.