102 HYMENOPTERA FROM SARAWAK. 



stigma black, not clear testaceous, and the band on the second 

 segment is broadly dilated backwards in the middle. 



Icaria Jtavo-bilineata, sp. nov. 



Black, the post-scutellum and the apex of the petiole yellow ; 

 the apex of the clypeus broadly pale yellow ; wings hyaline, a 

 fuscous spot in the radial and apical cellules ; the stigma yellowish. 



Long': 13 mm. (worker). 



Hab. Kuching, Sarawak. 



This species comes near to /. Itigtibris Sm. Sec. Saussure, 

 S. E. Z. XXIII, p. 134:, which is also from Borneo. The two may 

 be separated as follows: 



The cloud occupying all the radial cellule, the second trans- 

 verse cubital nervure almost interstitial, the post-scutel- 

 lum and apex of petiole not yellow, the stigma 

 black. Iw/ubris Sm. 



The cloud in the radial cellule commencing at the end of 

 the stigma, the stigma yellow ; the second recurrent 

 nervure not interstitial ; the post-scutellum and apex of 

 petiole lined with yellow. flavobilineata. 



Flagellumof antennae brownish beneath. Front and vertex 

 alutaceous, sparsely punctured, there is a narrow keel between 

 the antennae ; clypeus covered vvith a sparse .pale down, sparsely 

 haired, and roundly convex ; its middle at the apex not distinctly 

 toothed ; it has the narrowed apical part pale yellow. Mandibles 

 black, the teeth dark piceors. Thorax opaque ; the mesopleimc 

 and scutellum closely and distinctly, but not strongly, punctured : 

 the mesonotum is thickly covered with a fuscous down ; the base 

 of the prothorax is sharply keeled. The scutellum has a shallow 

 furrow down the middle. The striation on the median segment is 

 obscure. Legs black, pruinose; the calcaria and claws white. 

 Wings hyaline ; the costal cellule is slightly smoky ; the cloud in 

 the radial cellule is at the end of the stigma and at the second trans- 

 verse cubital nervure and extends to the apex ; in the cubital cellule 

 it does not extend beyond the end of the radius; the recurrent 

 nervures are received shortly behind and beyond the middle of 

 the cellule. Abdomen black, densely pruinose, more thickly 

 t jwards the apex ; the apex of the petiole is yellow'. 



