On the Hymenoptera of the Georgetown Museum. 161 
Comes nearest to Pedinopelte, to which it has a considerable resemblance in 
form and colouration ; it may be known from it by the strongly keeled scutellum, 
by the more clearly defined areola and lateral arez, by the four-angled areolet 
and interstitial transverse median nervure, and by the normal abdominal furrows. 
Stirojoppa violaceipennis, sp.n. 
Red, the antenne, head, the apical half of the third and the whole of the fol- 
lowing abdominal segments with the legs black ; the wings fuscous violaceous, 
the nervures and stigma black, the recurrent nervure received almost in the 
middle of the areolet, its posterior two-thirds rounded outwardly. Female. 
Length 17 m.m. 
Head. pro-and mesothorax and basal slope of metanotum smooth, the rest of 
metanotum closely, distinctly punctured, except the centre, which is smooth, and 
its sides which are strongly obliquely striated ; the basal part of the spiracular 
area is somewhat more strongly punctured, the apical strongly obliquely striated, 
the metapleur punctured, more closely and finely at the base than at the apex. 
Post-petiole finely closely striated in the middle, but not at the base and apex, 
the sides sparsely punctured, the second and third segments closely, regularly 
punctured ; the gastrocoeli smooth, large, wide, deep. Female. 
Length 17 m.m. 
The black on the apical abdominal segments has a distinct violaceous tint ; 
the metanotum and mesosternum are densely covered with white pubescence. 
Labrum dark red. 
Rodwayia, gen. nov. 
Metanotum closely, strongly transversely striated, except for two smooth, clearly 
defined arez on either side at the base, there being between these, in the centre 
of the base, a small, wider than long area ; the outer area enclose the spiracles, 
which are linear ; the apex has a steep slope and has a short, wide tooth on the 
top at the outer edge. Labrum projecting. Scutellum roundly convex, the 
sides keeled to shortly beyond the middle. Areolet large, longer along the 
radius and cubitus than along the transverse nervures, which are parallel, the 
areolet being of equal width, five-angled, bluntly, indistinctly, so where the 
recurrent nervure is received; disco-cubital nervure broken by a stump, the 
transverse median nervure received shortly beyond the transverse basal. Apex of 
clypeus rounded ; the labrum projecting. Abdomen smooth, the petiole slender, 
the post-petiole not separated ; the second segment finely, closely punctured, 
the ventral fold extending to the sixth segment. Antenne longer than the 
body, serrate. Hind legs long. 
This genus is not typical of any of the sub-tribes of Ichnewmonine ; it differs 
from them in the large areolet, not narrowed in front and in the metanotum not 
being areolated, but strongly tranversely striated. The form of the areolet is 
more like what it is in the Crytine than in the Ichnewmonine, but it wants the 
pleural and mese~otal furrows of the former group. Pending an inspection ol 
the unknown female, I, for the present, refer it to the Joppini, with whicn 
it has some resemblance, although the depression at the base of the metanotum 
is not so deep, being more as in the Jchnewmonini, 
