MACaOBKACHIUS. 109 



Near Phronia. Head placed low down on thorax; palpi incurved, 

 four-jointed, first two joints caliciforni, 3rd joint cylindrical, 4th 

 nearly as long as the first three taken together. Eyes oval, 

 emarginate at base of antennte ; three ocelli, placed in a transverse 

 line, the middle one small. Antennae ai'ticulate, 16-jointed, scape 

 differentiated, flagellum cylindrical. Thorax short, highly arclied, 

 metanotiim short, scutellum small, with long setfe. Abdomen 

 short and compressed, in male 6-segmented, in female 7-segmented. 

 Legs strong; middle and hind tibiae with two rows of lateral seta; 

 on each. Wings oval, broader at base in the male ; costa ending 

 far beyond tip of 3rd longitudinal vein ; auxiliary vein short, a 

 little curved, the end free ; the 4th vein forking beyond the basal 

 section of the 3rd vein ; the fork of the 5th longitudinal small, 

 the fork, far beyond the fork of the 4th ; branches widely 

 diverging ; the 6th longitudinal vein long and strong, but shortened": 

 the 3rd vein beginning before the middle of the wing; the 

 anterior cross-vein moderately long, \evy oblique, the 4th vein 

 forking immediately after quitting it. 



Range. Europe ; Eastern Himalayas. 



The long costa, in conjunction with the strong Gth vein, at 

 once separates this genus from Phronia. 



63. MacrobracMus longicosta, sp. uov. (PI. Ill, fig. H.) 



(S . Head : vertex and frons black, with greyish pubescence ; 

 face very narro\\-, owing to the eyes being nearly contiguous just 

 below the antennae. Palpi pale yellow; scapal joints of antennte 

 bright yellow, each with a row of bristles ; 1st flagellar joint 

 yellow at base, the remainder brown, darkening nearly to black at 

 the tip. Outer ocelli touching the eyes. Thorax bright brownish 

 yelloA\-, with very short golden yellow pubescence and numerous 

 strong bristly hairs, which latter are more conspicuous to\\ards the 

 margins and along the middle, Avhere they form two dorso-central 

 rows ; two brown, rather broad, longitudinal stripes beginning on 

 the hind margin of the dorsum, but disappearing before reachino- 

 the middle. Prothorax with four strong bristles on each side. 

 Scutellum sub-triangular, the upper corners rounded, blackish, 

 with short yellow hairs and tA\o divergent strong bristles at the 

 tip ; underside yellowish. Metauotum blackish, sides of thorax 

 yellow, pleurae blackish. Abdomen considerably compressed, six- 

 segmented, black, with yellowish grey pubescence ; belly yellowish. 

 Genitalia yellowish ; a short narrow emarginate dorsal plate, 

 apparently united to the very large side-plates (unless these are 

 the basal joints themselves of the claspers) and these meet below , 

 forming a keel-shaped cavity for the inner organs, the tip pi-olonged 

 narrowly as a ventral style, with three horny filaments. Erom 

 the genital chamber project three tapering finger-like appendages, 

 each ending in a horny hook ; they are united at their bases and 

 apparently form the second joint of the claspers, the first being 

 hidden (unless they themselves are what are here described as 



