90 HYMENOPTERA FROM SARAWAK. 
apical joints of the posterior are black. Except on the inner 
sides and apices of the lobes the median sezment is closely 
punctured; the basal 4 segments are broadly furrowed across 
the base: these furrows are closely longitudinally striated. 
Atphydria melanopus, Sp. NOV. 
Black ; the wings fuscous violaceous: the head rugose, 
the vertex smooth, the thorax coarsely rugosely punctured and 
reticulated throughout; the lateral and central furrows on the 
mesonotum wide, closely transversely striated, the lateral 
curved and becoming wider towards the apex, 9. 
Length 17 mm. 
Hab. Matang. 
Mandibles at the base closely punctured and thickly cover- 
ed with white hair. Middle lobe of mesonotum coarsely ir- 
regularly reticulated ; the tateral lobes on the inner side less 
strongly and more irregularly reticulated, on the outer almost 
smooth; the furrows become gradually wider towards the 
apex. Scutellum rugosely, coarsely punctured, except at the 
apex, which is smooth and shining; it is longitudinally fur- 
rowed down the centre. Abdomen as in_X. erythropus. 
Apart from the difference in colour this species may be 
known from erthropus by the much wider, broader at the apex, 
more rounded and closely striated middle lobe of the mesono- 
tum, by the front having a ae deep round depression and 
by the thorax being more strongly punctured, 
TENTHREDINID&. 
Monophadnus trichiocerus, Sp. NOV. 
Black, shining; the clypeus, labrum, the apex of the 
femora, and the tibie, the upper edge of the pronotum and the 
tegule whitish-yellow; abdomen testaceous, darker towards 
the apex ; the wings from the transverse basal nervure fuscous- . 
violaceous, the stigma and nervures black, °. 
Length 9 mm. 
Hab. Matang. 
Antenne short stout; the basal joint testaceous, the 
apical joint rufous beneath; they are ,thickly covered with 
Jour. Straits Branch 
