HYMEN OPT KB A FROM SARAWAK. 85 



Comes near to S. indica Sauss. sec. Bingh. Characteristic is 

 the peculiar form of the transverse cubital nervure. 



Didis borneana, sp. nov. 



Black ; the second and third segments broadly, and the 

 others narrowly on the sides, red ; the wings fuscous-violaceous, 

 the apex without a violaceous tinge; the pile on the pygidium 

 golden or rufous ; the middle and apical segments of the ab- 

 domen fringed with rufous hair. 



Long : 45 mm. 



Hab. Bajong and Santubong, Sarawak. 



ilead ; the vertex sparsely punctured ; the ocellar region 

 more sparsely punctured than the rest ; the front is much more 

 closely and strongly punctured and there is a smooth line down 

 the middle. The face and clypeus closely punctured, except for 

 a son:ewhat triangular large smooth space on the centre of the 

 latter. The occiput is thickly covered with long black stiff 

 hair ; the vertex is almost bare ; the front is covered with black 

 hair, which has a rufous tinge ; the face and clypeus are covered 

 with shorter hair of a darker colour ; the sides of the face are 

 thickly covered above with silvery pubescence ; the hinder 

 orbits are covered with black hair and with silvery pubescence. 

 Mesonotum strongly and closely punctured except for a smooth 

 impunctate space behind the middle. The scutellum has a punc- 

 tured, irregular band on the base and an irregular row of punc- 

 tures before the apex. The post- scutellum is punctured at the 

 base and there is an irregular row of punctures at the apex. 

 The basal region of the median segment is closely and distinctly 

 punctured, except broadly laterally at the base, and more nar- 

 rowly down the centre ; the apical slope is smooth, closely, 

 minutely punctured above and at the sides. Propleuree closely 

 and rather strongly punctured, except behind ; the meso- smooth ; 

 the middle thickly covered with black hair ; the metapleurai 

 smooth and almost bare. Legs thickly covered with black hair ; 

 the hair on the hinder tarsi bright rufous. Wings fuscous- 

 violaceous; the violaceous tinge absent from ihe apical portions, 

 which are also lighter in tint; the stigma and nervures black, 

 abdomen black; there are two large rufous marks on the second 

 segment which are narrowed and rounded on the inner side ; 



