HYMENOPTERA FROM SARAWAK, 113 
Length 8 mm. terebra 6 mm. 
Hab. Kuching. 
Scape of antenne fully three times longer than wide; its 
apex below sharply projecting ; the 3rd joint is distinctly longer 
than the 4th. Face punctured; the clypeus convex ; its base 
rounded ; its apex below obliquely depressed; the labrum is dis- 
tinctly seen below it, and is rounded at the apex. Vertex deeply 
depressed and with a deep furrow in the middle. Temples oblique- 
ly narrowed. The petiole rises straight from the base and forms 
an angle with the second segment; its base, in the centre, is 
rufous, its apex closely, rugosely longitudinally striated. The 
plate on the second segment is smooth and shining; it is large, 
its length slightly longer than the width at the base ; it becomes 
gradually narrowed towards the apex with the sides curved at 
the apex ; there is no keel issuing from it; the lateral furrows 
are straight, wide, moderately deep and oblique. Suturiform 
articulation crenulated; its apical lateral furrows wide, shallow ; 
there is an indistinct furrow on the apex of the segment; and 
a more distinct, crenulated one on the apex of the 3rd, 4th 
and 5th segments; the apical segments are clearly separated at 
the edges. Legs stouter than usual, the hinder pair having the 
tibize and tarsi distinctly thickened ; they are thickly pilose ; the 
pile on the front of the middle tibiz is rufous ; the basal joint of 
the hinder tarsi is thickened. The 2nd abscissa of the radius is 
slightly shorter than the apical; the 2nd transverse cubital 
- nervure is faint; the stigma is shorter and broader than usual. 
iv. Entirely luteous, the wings fuscous, yellow at the base. 
Iphiaulax matangensis, sp. Nov. 
Luteous, the head and mesonotum paler; the back of the 
abdomen suffused with black; the wings fuscous, the base to 
the transverse basal nervure, and a cloud in the 1st cubital 
cellule yellowish-hyaline ; a small hyaline spot below the bottom 
of the 1st transverse cubital nervure; the stigma black, nar- 
rowly yellow at the base; the keel on the 2nd sezxment is not 
much dilated at the base, becomes gradually narrowed and ex- 
tends to the apex. 9. 
Hab. Matang, 2800 feet. 
R. A. Soe., No. 39, 1903. 
