205 



side to side ; ocelli well developed, arranged in a very olUuse-angled 

 triangle, the anterior ocellus somewhat closer to the occipital margin 

 than to either of the posterior ocelli, the latter almost touching the 

 occipital margin and about equidistant from the anterior ocellus and the 

 eye-margins, being remote from the latter; occipital margin acute; eyes 

 subovate, somewhat elongate, being broadest anteriorly ; cheeks strongly 

 ■narrowed towards the mouth, as long as wide at base, which equals the 

 w'idth of the eyes. Antennae inserted slightly above the clypeal margin 

 and a little farther apart than in aptcrtis: the scape not Hattencd but 

 moderately thickened, being thickest a little beyond the middle, the 

 under side somewhat furrowed towards the apex ; pedicel slightly longer 

 than the first two funicle joints combined; flagellum cylindrical and 

 slightly clavate ; first funicle joint distinctly longer than thick, the fol- 

 lowing increasing gradually in size, all somewhat transverse and shorter 

 than the first joint; club as long as the last five funicle joints combined, 

 a little wider than the sixth, somewhat acute at apex, and distinctly 

 two-jointed, the first joint about one-half as long as the second. 



Thorax very strongly depressed and longer than in tiptrnis: pro- 

 notum long at the sides but not prolonged anteriorly into a neck, its 

 posterior margin with a very deep angular emargination at tlic middle ; 

 meso.scutum as wide as its median length, the portion lying behind a 

 line drawn between the posterior corners of the pronotum transverse 

 and as narrow as the same area in aptcrus, its posterior margin 

 perfectly truncate;, axillae strongly narrowed and meeting within, pro- 

 longed and narrowed on the sides posteriorly, their scutella-- margin some- 

 what arcuate ; scutellum large, as wide as long, posteriorly triangular with 

 the apex rounded ; propodeum very short at the middle and much 

 longer at the sides ; the metapleura subtriangular and moderate in size. 

 Abdomen a little wider than the thorax and nearly a third longer again, 

 widest at the middle, strongly narrowed posteriorly with the apex 

 rounded; the vibrissal plates located at or considerably before the mid- 

 dle, with the vibrissae not conspicuous; ovipositor not protruded. 



Wings full_i developed, rather narrow and reaching beyond the apex 

 of the abdomen ; the disk uniformly ciliated to the base, the speculum 

 rather wide, reaching from the base of the stigmal vein very obliquely 

 towards the posterior margin, connected there with a submarginal basal 

 hairless streak, and indistinctly divided just below its middle; marginal 

 cilia short; the nervures reaching nearly to the middle of the wing, the 

 marginal vein tb!ck, a little longer than wide, the postmarginal almost 

 absent, the stigmal a little longer than the marginal, constricted at 

 base and enlarged somewhat triangularly at apex. Legs showing no 

 marked peculiarities, the tibiae and tarsi slender and cylindrical, the 

 middle tibial spur no longer tlian the first tarsal joint. 



Head and thora.x smooth and somewhat shining, the face and frons 

 finely and somewhat sparsely punctate, the meso.scutum with similar 

 slightly closer punctures, the pronotum duller, with punctures not so 

 distinct, scutellum smoother with the punctures fainter and sparser ; 



