On the Hymenoptera of the Georgetown Museum. 167 
the areolet minute, longer than wide, the recurrent nervure interstitial with the 
second transverse cubital nervure; the transverse median nervure received 
shortly before the transverse basal. Male. 
Length 10 m.m. 
Frontal spines, broad, the two united on the lower half, the upper two separ) 
ated by a triangular space ; two keels run down to them from the ocelli. Face 
closely, strongly, the clypeus sparsely punctured, middle lobe of mesonotum 
distinctly, but not strongly punctured and densely covered with black pubes- 
cence. The basal region of the metanotum has two fine keels down the 
middle, with some stronger transverse strize between them ; the part bordering 
this is smooth, bordered on the outer side by some reticulations, followed by 
two or three fine transverse keels ; the lower, outer edge is depressed ; the part 
between the keel and the spines is transversely reticulated ; the apical slope more 
finely (but still strongly) transversely striated. Propleure with the apex and 
the lower central part striated ; there is a broad striated band on the meso- 
pleurze below the tubercles. Metapleure smooth at the base, the rest strongly 
punctured, with some striz near the smooth part, the spines are prominent, 
wider at the base than they are long. The spiracles on the first abdominal seg- 
ment are more prominent ; more projecting than usual. 
Polyaenus fusciventris, sp.n. 
Black, the abdomen fuscous, the post-petiole and the basal half of the second 
abdominal segment, black : the face, clypeus except at thé apex, a narrow line 
on the inner orbits extending on to the top of the outer, a broad line on the 
lower half of the lowe’, extending on to the malar space, its upper half obliquely 
narrowed, basal ha f of mandibles, palpi, a line on the centre of the sides of 
the pronotum, a wider one, widened towards the apex, on the lower edge of the 
propleur, a wide conical spot on the apex of the middle lobe of the mesono- 
tum, a large semi-circular spot on the apex of the scutellum, the scutellar keels, 
post-scutellum, the metanotal spines and a line leading down from them to the 
apex, tubercles, a large line along the lower part of the mesopleure, the base 
projecting above and not reaching to the lower part of the main line, which has the 
basal fourth wider than the rest and is obliquely sloped ; from it the mark becomes 
narrowed towards the apex, with a slight rounded curve beyond the base ; the 
lower part is straight ; there is the usual mark behind the hind wings, but none on 
the metapleure. Four front legs pallid yellow, the fore coxe black, the middle 
reddish behind, the fore femora blackish behind, the middle entirely black ; the 
hind legs very long, the cox, trochanters and femora red; the tibie and tars! 
yellowish white, the apex of the femora and the base of the tibie blackish. 
Wings hyaline, the stigma and nervures black ; the transverse median nervure 
received behind the transverse basal ; the areolet minute, narrowed at the base, 
longish, receiving the recurrent nervure in the apex. Male. 
Length 13 m.m. 
Upper half of face strongly punctured, but not closely, the upper halt of the 
clypeus with scattered punctures. Front deeply hollowed, obliquely, sparsely 
