120 HYMENOPTERA FROM SARAWAK, 
brown; smooth. On the base of the median segment are two 
broad, shallow, slightly oblique furrows. Mandibles brownish- 
yellow, black at the apex. The apical part of the petiole is 
closely rugosely punctured; the 2nd segment is coarsely lon- 
gitudinally punctured; the base of the keel is irregularly trian- 
gular, is shining and aciculated; the keel extends beyond the 
middle; the part bounding it is depressed and irregularly 
striated ; the lateral furrows are broad, distinct and striated ; 
the 2nd furrow is distinct and striated; the 3rd and 4th are 
narrower and less distinctly striated. The legs are more or 
less brownish and are thickly covered with black hair; the 
metatarsus is stouter than the other joints. 
This species is very similar in form and colouration to J. 
carnasius ; it may be easily separated from it by the rugosely 
punctured petiole and by the smooth and shining plate on the 
base of the 2nd segment, with its stronger keel. 
Chaoilta fuscipennis, Sp. Nov. 
Black, the head, thorax and 4 front legs ferruginous ; 
antenne biack, the scape rufous; the abdomen, except the 
apical two segments, closely and distinctly punctured, its 
furrows Striated. °. ; 
Length 16 mm. terebra 17 mm. 
Hab. Kuching. 
Scape with a triangular hollow on the apex beneath; the 
corners projecting into short stout teeth. Front depressed, its 
centre furrowed. The frontal plate is large, becomes gradu- 
ally narrowed towards the apex, which is rounded ; the central 
keel is stout, does not reach to the apex and becomes gradually 
smaller. Antennal tubercles large, tuberculate on the outer 
side above. Thorax smooth and shining; the metanotum black 
to near the apex, where there are some irregular striz in the 
centre. Legs thickly haired, the hinder tibiz grooved on the 
outer side. The raised central part of the petiole is rugosely, 
longitudinally striated: the striz are irregular and intermix ; 
the depressed sides are longitudinally striated, more regularly 
and distinctly than in the centre. The 2nd 38rd and 4th seg- 
ments are closely longitudinally striated; on the 4th the long- 
Jour. Straits Branch 
