The Hymenoptera of the Georgetown Museum. 423 
the apex of which it reaches ; the apical cloud is narrow and faint ; the 2nd 
abscissa of the radius is almost one-fourth longer than the 3rd. The Ist trans- 
verse cubital nervure is obliquely sloped from near the bottom, the separation 
of the 2 forming an angle, the larger fore part is slightly curved ; the 3rd is 
broad ly, roundly curved outwardly in the middle ; the 2nd recurrent nervure is 
broadly roundly curved outwardly and is received near the apex of the basal 
fourth ; the transverse median nervure is received very shortly beyond the 
transverse basal ; the acessory nervure in the hind wings is received shortly 
beyond the cubitus. Apex of clypeus transverse, its sides broadly rounded. 
Kyes slightly converging above. Ocelli separated from each other by the same 
distance as they are from the eyes. Front densely covered with golden pile ; 
a furrow down its centre. Temples obliquely, sharply narrow. Apex of 
pronotum hardly angled in the middle. Apical half of metanotum strongly 
irregularly transversely striated. Female. 
Length 16 m.m. 
Pompilus cosnuopterus, sp. Nn. 
Black, densely covered with silvery pubescence, which is very dense on the 
face, clypeus and apical slope of metanotum and forms broad bands on the 
abdominal segments ; wings clear hyaline, 2 broad cloud of equal width com- 
mencing behind the transverse basal and transverse median nervures and 
extending to shortly beyond the anterior part of the transverse basal; the 
edges are irregular ; it extends to the posterior edge of the wing; the middle 
cloud is larger, it fills the radial cellule to shortly beyond the 3rd transverse 
cubital nervure, the whole of the 2nd and 3rd cubital cellules, extending 
slightly on to the Ist, and on to the discoidal cellule along the 2nd recurrent, 
forming a larger semicircle, at the base between the Ist and 3rd transverse 
cubital nervures ; there is a faint cloud in the middle of the hind wings and a 
broader slightly more distinct one at the apex; the Ist recurrent nervure is 
received near the base of the apical third, the 2nd in the basa! fourth ; trans- 
verse median nervure interstitial. the accessory in hind wings received shortly 
before the cubitus. Female. 
Length 14 m.m. 
Eyes parallel. Hinder ocelli separated from the eyes hy twice the distance 
they are from each other. Apex of clypeus broadly rounded, as is also the 
apex of pronotum. Apex of metanotum broadly rounded. The long spur 
of hind tibiz is about one-third of the length of metatarsus. Claws bifid, the 
inner one shorter and stouter than outer. 
This species and the preceding are very like the Central American P. gloriosus, 
Cresson ; the 3 may be separated thus : 
1. (4) The middle cloud in the forewings not narrowed in front, the metonotum not striated, 
2. (3) 2ndcubital cellule as long along the radius and cubitus as along the transverse 
cubital nervures, 1st abscissa of radius one-fourth of the length of grd, which is two-thirds 
of the length of the 2nd transverse cubital nervure and one-third shorter than the 2nd; the 
apex of the apical cloud broad, transverse, not roundly narrowed, . . . gloriosus Cr. 
3. (2) 2nd cubital cellule shorter along the radius than along the transverse cubital nervures 
jst abscissa of radius half the length of 3rd, which isnot much more than two-thirds of the 
