1973 ] 
Evans — Neotropical Pompilidae 
22 3 
sockets. Pronotum short, with a somewhat flattened dorsal part; pro- 
podeum with smooth contours, without erect setae or with a very 
few setae on each side; legs relatively smooth, but middle and hind 
tibiae with several rows of very small spines; brush on inner side of 
hind tibia continuous to apex. Third submarginal cell receiving 
second recurrent vein .4 the distance from the base; anal vein of 
hind wing reaching media well before cubital fork. Known species 
with the wings unbanded, the antennae dark but with a white annu- 
lus near the middle. 
Remarks . — -Arnold {1934) described a genus from Africa in 
which the female has the front more or less angulate in profile, 
Arpactomorpha. However, in this genus the angulate portion has a 
median groove, and below the angulation there is an oblique im- 
pression on each side of the face. Furthermore, in Arpactomorpha 
the mentum has a beard composed of four or five long bristles arising 
from the base, whereas in Cyrtagenia there are only a few weak 
setae arising along the length of the mentum, as usual in A geniella. 
I doubt if there is any close relationship between these two groups. 
Key to species ( Females ) 
Angulation of front well above antennal sockets; some of the ab- 
dominal tergites with lateral white spots; pubescence fine and 
relatively inconspicuous fallax (Arle) 
Front forming a nearly flat, oblique slope from the antennal sockets 
to the vertex (Fig. 7) ; abdomen without white spots; pubescence 
unusually coarse and hoary innuba, new species 
A geniella (Cyrtagenia) fallax (Arle) new combination 
Amerag enia fallax Arle 1947, pp. 426-428, figs. 23-25. 
Aide’s description and figures are excellent, and there seems no 
need to redescribe the species at this time. Arle had a single female, 
from near Rio de Janeiro. The species appears to be widely dis- 
tributed, as I have seen females from Teresopolis and Nova Teu- 
tonia, Brazil; Oran and Tucuman, Argentina; and Avispas, near 
Marcapata, Peru. These females are exceedingly variable in color. 
All have a pale annulation on the antennae and at least small spots 
on the sides of the abdomen, but the other maculations described by 
Arle may be much reduced or even absent. At the other extreme, 
the specimen from Peru is exceedingly ornate, having ivory spots 
over much of the head and thorax, as well as a median stripe on the 
