380 TESPiD.i;. 



ment, t-wo oblique lines to\\ards its apex beneath, a transverse 

 band broadly interrupted in the middle at the base of the 3rd 

 segment, a square spot on each side of the 3rd and 4tli ventral 

 segments, and the \^hole of the 0th ventral segment yellow ; legs 

 ferruginous brown variegated with yellow ; wings hyaline, with a 

 slightly brownish tinge and beautifully iridescent. 



Vcu: The clypeus with a large cordate yellow spot, the anterior 

 oblique and apical square spots on the mesonotum wanting ; the 

 intermediate and posterior coxae yellow posteriorly. 



Bab. Pegu Hills, Burma ; Tenasserim ; Borneo. $ or g ? 

 Length 11-12 ; e.vj). 19-22 mm. I have seen no c? of this species. 



Common all over Tenasserim, makes a social nest (Jour. Bomb. 

 j^at. Hist. Soc. 1890, pi. to paper on Hymenoptera, pp. 233-252). 



6Q6. Ischnogaster nitidipennis, Sauss. Mon. Guep. Soc. p. 10, 

 pi. xxxiv, fig. 4, S • 



5 . Head, thorax, and abdomen thinly pubescent ; clypeus 

 nearly pentagonal, the apex leugthened and ending in a tooth ; 

 mesouotum nearly circular; scutellum and postscutellum prominent, 

 raised ; median segment convex posteriorly, nearly vertical, with 

 a well-marked but line and narrow medial longitudinal groove ; 

 petiole of the abdomen with the apex swollen, ellipsoidal, not 

 gradually thickened; base of 2nd segment shortly petiolate. 

 ferruginous brown ; the clypeus, a spot under the antennae, the 

 scape in front, the posterior margin of the pronotum, the anterior 

 lateral angles of the scutellum, the postscutellum, a large spot on 

 each side of the apex of the median segment, a spot at the base 

 of the mesopleurae, another at the base of the metapleurae, a 

 curved spot on the mesosternum, irregular marks on the sides of 

 the median segment, two spots, one slightly above and in front 

 of the other, on each side at base of the 2nd abdominal segment, 

 two more elongate ones on its ventral side, a transverse band 

 interrupted in the middle at the bases of the 3rd, 4th, and 5th 

 segments, and the whole of the apical segment beneath, pale 

 yellow ; legs pale ferruginous variegated with yellow ; wings 

 clear hyaline, remarkably iridescent. 



Var. A spot on the middle of the clypeus ferruginous brown, 

 a spot on each side of the vertex of the head and a line behind 

 the eyes yellowish ; antennae fulvous at their apex. 



Hah. Cayenne??; Tenasserim. $. Length 12; &v^. 20 mm. 



667. Ischnogaster eximia, Bingh. Jour. Bomb. N. H. Soc. Y, 1890, 

 p. 244, pi. — , fig. 7, uest. 



S . Head, thorax, and abdomen thinly pubescent, the head, 

 pro- and mesonotum, scutellum, and postscutellum, very minutely 

 punctured ; clypeus very long, anteriorly carinate down the 

 middle ; median segment nearly vertical, smooth. Dark rufo- 

 ferruginous ; the mandibles, clypeus, face as high as the base of 

 the antennae, the scape of the latter, a broad stripe on the posterior 



