BY FREDERICK A. A. SKUSE. 277 



wanting. Palpi four-jointed, prominent, incurved, sub-cylindrical, 

 first joint shortest, second joint shorter than third, fourth longest. 

 Antennae porrected, diverging a little sidewards, filiform, seated in 

 a notch in the eyes, 2--f 13-jointed in both sexes, or 2-+ 13-jointed. 

 in (J, and 2--(- 10-jointed in ^ ; first joint of scapus large and 

 globose, second combined with flagellum, small, cupuliform ; in $ 

 the next following eleven flagellar joints sub-globose, gradually 

 diminishing in size, twelfth flagellar joint longer than all others, 

 all plumose, terminal joint short, elongate-conic, pubescent ; in 9, 

 first three or four flagellar joints sub-globose, remainder gradually 

 becoming more elongate or obovate, all verticillate-pilose, terminal 

 joint equal in length to two of preceding, sub-lanceolate, pubescent. 

 Mouth not prolonged. Thorax ovate, highly arched ; scutellum 

 nearly as wide as thorax, lunate : metanotum gibbose. Halteres 

 small. Abdomen long, slender, seven-segmented, with a wide anal 

 joint and hooked forceps, shorter and stouter in 9. Legs slender, 

 moderately long, pubescent, anterior sometimes the longest ; fore 

 legs remote from the others; coxse moderate; femora rather stout; 

 tibiae longer, with minute spurs ; in ^ fore tarsi sometimes pilose, 

 in 9 with a minute pubescence ; ungues minute, acute. Wings 

 narrow, elongate, lanceolate, well rounded at base, pubescent or 

 naked, ciliated; deflexed in repose. Costal vein reaching about 

 apex of wing ; humeral cross-vein present ; auxiliary vein disap- 

 pearing close to costa, beyond half the length of wing ; sub-costal 

 cross-vein wanting; first longitudinal vein bent upwards, joining 

 costa at about two-thirds the length of wing ; marginal cross-vein 

 very obliquely situated; second longitudinal bent slightly upwards, 

 joining cesta at about J the distance from tip of first to that of 

 third longitudinal vein ; third longitudinal vein very arcuated 

 towards its tip, much bent downwards, ending a little before apex of 

 wing ; fourth longitudinal vein curved a little downwards towards 

 tip, joining margin some distance below apex of wing ; fork of 

 fifth longitudinal vein with its base lying at or beyond base of 

 posterior cross-vein ; wing-fold running close to fifth longitudinal 

 vein for whole of its length. 



