HYMENOPTEKA FROM SARAWAK. 107 



yellow. The lower part of the vertex is sparsely and distinctly 

 punctured ; the front is more closely and not so strongly punc- 

 tured, except in the middle where it is smooth ; almost bare and 

 impunctate. Mandibles black, sparsely punctured and shining. 

 Thorax smooth and shining, except on the mesonotum which is 

 closely and distinctly punctured ; the scutellum is less strongly 

 punctured and has a narrow keel in the middle ; both are thickly 

 covered with fulvous hair. Median segment and pleura} smooth 

 and shining ; the pleurae have a plumbeous hue. On the thorax 

 the following are yellow ; a line on either side of the base of 

 the pronotum, an irregular spot on either side of the base of the 

 scutellum, two smaller spots on the base of the post-scutellum 

 in the centre, two small marks on the apex of the median seg- 

 ment, a spot about three times longer than broad on the meso- 

 pleurae in the middle below the tegula?, and a curved mark 

 below the furrow, this spot having the apex narrower and more 

 oblique than the base. Legs dark rufous, probably varying in 

 tint ; the coxae, tibia? and tarsi are darker coloured than the 

 femora ; the hair is long and fuscous. Wings fulvous-hyaline, 

 darker at the apex ; the stigma is testaceous, the nervures fus- 

 cous ; the second transverse cubital nervure is roundly curved 

 outwardly ; the fourth cellule is fully half the length of the 

 third. The petiole is brownish, the node black above except at 

 the base ; there is an oval, small yellow mark on either side of 

 the second segment below, and two elongate marks on the base 

 of the third, with a small spot on either side. There are two 

 obscure yellow marks on the base of the median segment. 



The $ is more richly coloured than the 9 the yellow 

 markings being larger and the rufous colour of the legs and 

 petiole much brighter in tint. The front is yellow, except 

 for a black line in the centre, the clypeus entirely yellow ; the 

 mandibles are dark testaceous ; the marks on the thorax are 

 larger, especially the upper mark on the mesopleurae and on the 

 base and apex of the median segment. The petiole is almost 

 twice the length of the rest of the abdomen ; the rufous colour 

 extends to the narrowed part of the second segment, the lower 

 half of the clypeus is keeled in the middle, the tubercle on the 

 propleurse is large ; there is a narrow striated band on its apex, 

 and a broader, oblique one below its middle. 



