The Hymenovtera of the Georgetown Museum. 421 
and nervures black, the 2nd and 3rd abscisse of the radius equal in length, the 
Ist recurrent nervure received near the apex, the 2nd shortly beyond the 
apex of the basal third of the cellule, the transverse median nervure inter- 
stitial ; the accessory in hind wings received shortly behind the cubitus. The 
stigmal region of the metanotum is bordered at the apex by a° wide curved 
furrow ; the sides at the apical slope project into prominent rounded tubercles. 
Head as wide as the thorax, the temples roundly narrowed ; the hinder ocelli 
separated from each other by a slightly greater distance than they are from the 
eyes, which distinctly converge above. Apex of clypeus transverse. Prono- 
tum broadly rounded i: front ; the lower part of the propleure is raised into a 
longish triangle, the narrowed end above and bordered at the apex by a 
furrow. Tibia! and tarsal spines lonyish, stout: there is a touth near the 
middle of the claws; :there are 4 tong spines on the foremetatarsus, with a 
short one between the lst and 2nd and the 2nd and 3rd ; the long spur of the 
hind tibie is about one-third of the leagth of metatarsus. Female. 
Length 23 m.m. 
Smooth and shining, covered with a silvery pile. The 3rd joint of the 
antenne is almost as long as the following 2 united. The eyes at the top are 
separated by the length ot the antennal scape and pedicle united. The 2nd 
recurrent nervure is broadly rounded, oblique. 
Very similar, as regards size and colouration, to P. virulentus, Sm.. which 
may be known from it by the sides of the metanotum not being tuberculated ; 
by the 3rd abscissa of radius being distinctly shorter than the 2nd, by the 2nd 
recurrent nervure being roundly curved outwardly in the middie and by the 
much lighter coloured wings. 
Pompilus regius, Fab. Anoplius regius, Lep., Hymen., iii., 450. 
A female is probably this species ; only the :nale was descrbied by Lepelletier. 
Ihave a male fromAmazonia named regius by F. Smith. It differs from the 
female in having the 3rd abscissa of the radius slightly longer—or sub-equal— 
than the 2nd; the hind wings are fuscous violaceous in front, clear hyaline 
behind ; the 2nd transverse cubital nervure is oblique and roundly bicurved, 
the 1st recurrent nervure is received in the apical, the 2nd in the basal fourth ; 
the transverse median nervure is almost, the accessory in the hind wings 
entirely interstitial. Eyes a litt’e converging above; the hinder ocelli are 
separated from the eyes by one half more than they are from each other. 
Pompilus demeraraensis, sp.n. 
Black, the front, face and clypeus densely covered with silvery pubescence 
(probably the whole body in fresh examples) ; wmgs uniformly fuscous viola- 
ceous, the stigma and nervures black: the 2nd and 3rd abscisse of the radius 
equal in length; the transverse median nervure received shortly beyond the 
transverse basal ; the Ist recurrent nervure received in the apical, the 2nd in 
basal fourth of the cellule ; the acessory nervure in hind wing interstitial. Eyes 
parallel; the hinder ocelli separated from each other by fully half the dis- 
tance they are from the eyes. The long spur of the hind tibiee does not quite 
