HYMKNOPTEKA FROM SARAWAK. 105 



tschnogaster nigricans, sp. nov. 



Black ; a line on the pronotum, a broad one on the post- 

 scutellum, one below the tegulae and two small ones on the apex 

 of the median segment, yellow ; the four front tibiae yellow 

 behind; the wings clear hyaline, iridescent, the stigma and 

 nervures black. 9 . 



Long. 12 mm. 



Hab. Kuching, Sarawak. 



Head entirely black ; the face and clypeus thickly covered 

 with silvery pubescence ; opaque, closely, but not very strongly, 

 punctured, the clypeus less strongly punctured ; the apical tooth 

 bluntly pointed. Thorax black, covered with silvery pubescence ; 

 the scutellum with long pale hair. Mesonotum, scutellum and 

 median segment closely and distinctly punctured; the median seg- 

 ment with a distinct, narrow, deep furrow down the centre, 

 which is widened and smooth at the apex. A line on the pronotum, 

 a mark under the tegulae, the post-scutellum broadly and two 

 marks on the apex of the median segment, yellow. The second 

 and third transverse cubital nervures are straight, slightly ob- 

 lique and converge slightly above ; the fourth cellule at the top 

 is two-thirds of the length of the third. All the knees are yellow, 

 the four front ones broadly ; there is a black line on the yellow, 

 near the base of the middle tibiae. Abdomen entirely black; the 

 petiole twice the length of the thorax ; the base of the second 

 segment is widely narrowed. 



Ischnogaster ornatifron*, sp. nov. 



Black, largely marked with yellow, the antennae brownish, 

 black above, except at the sides of the median segment with a 

 large yellow mark dilated at the apex; the wings hyaline, the 

 radial and two apical cubital cellules infuscated. 9 . 



Long: 22 mm. 



Hab. Santubong, Kuching, Sarawak. 



Head black, the front, except for a small black mark in the 

 middle above, the clypeus, the mandibles, a small oblique mark on 

 the outer side of the antenna 1 , one in the eye incisions and a 

 smnll one on the hinder edge of the veitex, yellow. The front 

 is distinctly, but not closely, punctured and is- furrowed in the 



