108 HYMENOPTERA FROM SARAWAK. © 
_ [phiauiax Wallacer, sp. nov. . 
Black, the head, scape of antennes, thorax and 4 front legs, 
ferruginous: the wings uniformly dark fuscous, the face with 2 
deep short furrows in the centre immediately below the anten- — 
ne; the petiole with a narrow longitudinal keel down the 
centre, almost entirely smooth; the 2nd and the basal half of 
the 3rd segment closely longitudinally striated ; the keel is broad 
at the base, becomes gradually narrowed to the middle, is close- 
ly longitudinally striated and extends to the apex of the seg- 
ment. ‘The suturiform articulation is deep, closely longitudinally 
striated and with both lateral branches deep, narrow, straight, 
oblique and striated. Sheaths cf the ovipositor broad and thick- 
ly covered with longish biack hair. ©. a 
Length 15 mm.; terebra 18 mm. 
Hab. Kuching. 
Antenne originating from prominent, slmione biarticulate, 
tubercles ; the scape longer than the 2nd and 3rd joints united ; 
the 3rd and 4th joints are equal in length. Front hardly exca- 
vated ; there is a narrow keel between the antenne; the raised 
part, separating the furrows below the antenne, becomes gradu- 
ally narrowed above. Face in the centre smooth, the sides punc- 
tured sparsely and pilose. Clypeus depressed; the top trans- 
verse, the sides rounded, There is a short stout keel between 
the scutellum and post scutellum. Petiole with an irregular 
band of fine striz before the middle. The depressions on the 
base of the 2nd segment are narrow, deep, oblique. The furrow 
on the 8rd segment is smooth. The hinder tibiz are deeply 
grooved on the outer side from near the base to near the apex. 
_ The 2nd abscissa of the radius is as long as the third; the 
apex of the middle tibiee and their tarsi are blackish; the meta- 
notum is broadly blackish; the hypopygium does not extend 
beyond the apex of the dorsal segment; the 2nd segment is 
square and is longer than the 3rd. 
This is a broader and stouter insect than any of the other 
species here described. 
Iphiaulax syleus, Sp. nov. 
- Black, the head, pro- and mesothorax and the front coxe, 
trochanters, femora and tibiee, rufous; the wings dark fuscous; 
_Jour. Straits Branch 
