92 Hymenoptera from the Oriental Zoological Region. 



of tlie second to sixth narrowly, and the ventral (except for a 

 line on the apex of the second and irregular marks on the sides 

 of the others) black ; the depressed apices of the first to 

 fourth brownish ; the line on the second broad, slightly dilated 

 in the middle, that on the third forming a broad triangle, that 

 on the fourth narrowly dilated backwards to the apex of 

 basal third in the middle ; there is a deep furrow in the 

 centre of the apical two thirds of the fifth. The second 

 ventral segment becomes gradually raised in the centre 

 towards the apex (forming about one third of the segaient), 

 the apex of the raised part slightly roundly narrowed ; tlie 

 part beyond this is raised also, is stoutly striated, anil has the 

 apex bluntly rounded and curled up. Pygidium long, 

 gradually roundly narrowed from the base to the apex, 

 sparsely weakly punctured. Eyes at the top separated by 

 not quite the length of the third antennal joint. Hinder 

 ocelli irregnlarly oval, depressed in the centre, the depression 

 behind them longer than wide, the apex deep, the base much 

 shallower and narrowed ; the anterior ocellus roundish, sur- 

 rounded by a rounded furrow. Third antennal joint as long 

 as the second and fourth united ; front and face densely 

 covered with silvery pubescence. Pronotum with a steep 

 oblique slope from the top to the bottom, the top rounded, 

 clearly separated, widened laterally. Base of mesonotum 

 closely, the sides and apex sparsely punctured, the scutellums 

 still more sparsely punctured. Metanotum depressed in the 

 middle, strongly striated, transversely on base, obliquely on 

 sides of apex, the centre being smooth ; the rest closely, 

 strongly, rugosely punctured, with an irregularly reticulated 

 area, widest on outer side, on the inner side at the base. 

 Pro- and mesopleuraj shining, sparsely punctuied; the meta- 

 pleurffi closely irregularly reticulated. The last ventral 

 segment is flat at the base, gradually narrowed to a fine point, 

 then prolonged into a keel ; the penultimate flat. The front 

 over the antenna is roundly raised. Middle of iirst abdo- 

 minal segment keeled laterally. The striation on the meta- 

 notum is irregular, being more transverse in one example 

 than in the other; it is strong in both. 

 Allied to r.jlavipes. 



