Corpus longiusculum, sat angustum. Caput transversum, breve, thorace vix latius. Antennæ graciles, thorace paullò breviores; articulus 1us linearis; 2us longi-fusiformis, 1o vix longior; 3us acuminatus, minimus. Thorax longi-ellipticus. Abdomen obclavatum, subpetiolatum, thorace plus duplò longius. Pedes graciles. Alæ elongatæ, sat angustæ.
Body rather long and narrow. Head transverse, short, very little broader than the thorax. Antennæ slender, a little shorter than the thorax; 1st joint linear; 2nd elongate fusiform, very little longer than the 1st; 3rd acuminated, very minute. Thorax elongate elliptical. Abdomen obclavate, subpetiolated, a little more than twice the length of the thorax. Legs slender. Wings rather long and narrow; mediastinal, subcostal, radial and cubital veins, and median veinlet of the usual structure; 1st, 2nd and 4th externo-medial veins complete; 3rd abbreviated; subanal joining the anal at some distance from the border; discal areolet irregularly hexagonal, elongated, narrower towards the tip of the wing.
17. Massicyta bicolor, n. s., fœm. Nigra, antennis basi testaceis apice albis, pectore scutelloque flavis, illo nigro bimaculato, abdomine testaceo fasciato, pedibus flavis, femoribus anterioribus tibiisque posticis fusco fasciatis, femoribus posticis nigris, alis cinereis, apud costam subluridis.
Female. Black, shining, with testaceous pubescence. Mouth testaceous. Antennæ testaceous towards the base, white at the tips. Pectus and scutellum yellow, the former with a large black spot on each side. Abdomen with testaceous bands. Legs yellow; hind femora black; anterior femora and hind tibiæ with brown bands. Wings grey, with a slight lurid tinge along the costa; veins black. Halteres pale yellow. Length of the body 6–7 lines; of the wings 10–12 lines.
Singapore.
Gen. Sargus, Fabr.
18. Sargus longipennis, Wied. Auss. Zweifl. ii. 34. 11.
Malacca. Inhabits also Java.
19. Sargus luridus, n. s., mas. Ferrugineus, capite pectoreque testaceis, antennis fulvis, abdominis segmentis testaceo-fasciatis, apice nigro, pedibus testaceis, tibiis posticis apice nigris, tarsis posticis nigris apice albidis, alis luridis apice fuscis.
Male. Ferruginous. Head and pectus testaceous. Antennæ tawny. Abdomen black towards the tip; a testaceous band on the hind border of each segment. Legs testaceous; hind tibiæ black towards the tips; hind tarsi black, with whitish tips. Wings lurid, brown towards the tips; veins brown. Halteres testaceous. Length of the body 7 lines; of the wings 14 lines.