110 HYMENOPTERA FROM SARAWAK. 
yellow, with the apical third and the lower two-thirds fuscous ; 
the basal three sezments of the abdomen coarsely longitudinally 
striated ; the basal half of the four in the centre more finely, and 
the base of the 5th still more finely, striated; the 4th and Sth 
seements with a crenulated curved furrow at the base, the plate 
on the base of the second segment is small, smooth and shining ; 
a narrow, indistinct keel leads from it to the centre. There isa 
cloud on the lower side of the 1st cubital cellule, which is con- 
tinued downwards along the recurrent nervure on the upper 
half and along the cubital nervure; the 2nd abscissa of the 
radius is longer than the 8rd. 4. 
Length 16 mm. 
Hab. Santubong, 2600 feet. 
Antenne longer than the body; the face thickly covered 
with long hair; the clypeus rounded above. The petiole is 
stoutly keeled in the middle; the striz on the siles are stout, 
irregularly curved and more or less broken. The sides are de- 
pressed and irregularly striated ; the strize along the keel run into 
reticulations. The suturiform articulation and the keel on the 
third segment are stoutly longitudinally striated; that on the 
4th is less strongly ; there are no apical transverse furrows. 
The scape of the antennz is rufous above; it is slightly 
more than twice Jonger than wide; the 3rd and 4th joints are 
equal in length. 
Iphiaulax varipennis, sp. nov. 
Pale yellow, the back of the abdomen, the vertex, the 
middle of the front broadly, a mark, rounded on the top, in the 
centre of the face, the sides of the mesonotum and a larye mark 
in its centre at the base, an irregular mark on the base of the 
metanotum, the mesosternum, a curved mark, narrowed behind, 
on the centre of the mesopleure, two marks on the prosternum 
and the hinder legs, black. Wings with the basal half, the 1st 
cubital cellule and a narrow curved spot, dilated below, under- 
neath it, yellowish-hyaline; the rest of the wing dark fuscous, 
the hinder wings yellowish hyaline to beyond the middle, the 
apex dark fuscous, the band on the lower side extending to near 
the middle; the basal half of the stigma is orange-yellow. @. 
Jour. Straits Branch 
