On the Hymenoptera of the Georgetown Museum. 320 
Metanotum with a central area, a little longer than wide, the keels united at 
the base, gradually roundly diverging towards the apex, 7.2. conical, the lateral 
extends to the outer edge and is wider than long ; there are 3 large aree on the 
apical slope, the central longer and narrower than the lateral. Mesanotum 
trilobate, the middle lobe broadly rounded at the apex, a smooth line down its 
centre. Pubescence sparse, pale ; palpi pale testaceous, calcaria black. 
Cremnops parvifaciatus, sp. n. 
Black, the metathorac, the lst, 2nd, 3rd and the sides of the 4th abdominal 
segment broadly, the hind cox and the hind femora, except narrowly, at 
the apex, rufous, the 4 front tarsi testaceous; the palpi pale; wings fuscous, 
the stigma and nervures black, a narrow hyaline cloud along the fore part, 
continued more broadly along its base, thence more broadly into the 
discoidal cellule along the recurrent to the anal nervure, the fore part being 
broken into by a conical cloud, the 2nd cubital cellule is oblique, triangular, 
the nervures meeting in front, the apical nervures are fuscous. A stout keel 
runs down the centre of the basal part of the metanotum, leading down to an 
area, twice wider than long, and of equal width ; the sides are bordered by a 
stout keel, which is thinner at the base, and there is a keel round the apical 
slope. The pleure and more especially the metapleure, are thickly covered 
with white pubescence, as is also the sternum. The legs are densely covered 
(especially the hind coxe) with white pbescence. 
This species may be known from the 2 other species here described by the 
pedunculated basal metanotal area. 
Cremnops nigrobalteata, sp. n. 
Rufo testaceous, the antenne, lower part of occiput, base of pronotum, a 
narrow line along its sides, the apical half of the 3rd and 4th and the whole of 
the 5th and 6th, the apex of the middle tibie the basal and apical fourth of the 
posterior and the 4 hinder tarsi, except the base of the metatarsus, black. 
Wings fuscous, the nervures and stigma black, the areolet oblique, 4-angled, the 
nervures uniting infront. Female. Length 5 m.m. ; terebra 4m.m. 
The pin, unfortunately, goes through the metanotum, so I am unable to 
describe its structure. The malar space is longer than usual for a Cremnops, 
being almost as long as the eyes, showing an approach in the form of the head 
to Agathis. 
Spilomicrodus, gen. n. 
First cubital and first discoidal cells confluent, the Ist abscissa of the cubitals 
only indicated at the base ; transverse median nervure interstitial. A stout 
keel runs from the ocelli to the outer side of the antenne. yes large, slightly 
converging above. Malar space short, but distinct. Apex of clypeus trans- 
verse. Labrum large, rounded. There is a small closed basal hinder cellule 
in the posterior wings. Areolet 4-angled, in front half the width it is behind. 
The long spur of the hind tibie two-thirds of the length of the metatarsus. 
Claws simple. Parapsidal furrows distinct, uniting at the base of the apical 
fourth of the mesonotum ; the middle lobe of the mesonotum clearly defined. 
