1961] 
Evans — Genus Epipompilus 
37 
angle, postocellar line twice the ocello-ocular line. Front with distinct 
punctures which are separated by less than their own diameters. Eyes 
with very short, barely noticeable hairs. First four antennal segments 
in a ratio of about 15:5:13:12, segment three about twice as long as 
thick; each flagellar segment, but more particularly the middle ones, 
with a distinct swelling below and toward the base, giving the 
antennae a somewhat crenulate profile below. 
Pronotum very short, its posterior margin subangulate. Mesonotum 
with distinct small punctures like the front ; postnotum smooth, trans- 
versely striate, about half as long as metanotum. Propodeum with 
even contours, median line weakly impressed, surface of declivity very 
finely transversely striolate. Femora not notably swollen; middle 
and hind tibiae with short spines scattered amongst the pubescence; 
longer spur of hind tibia nearly as long as basitarsus; claws of front 
and middle legs strongly dentate, those of hind legs obscurely dentate. 
Fore wing with basal vein arising well beyond junction of transverse 
median vein, basal part of basal vein strongly arched ; marginal cell 
large, acute, removed from wing-tip by only about half its length; 
other features of wing about as in other species of the genus. 
Abdomen fusiform, covered with short setae ; sternites four and five 
each with a transverse brush of longer setae, longer on the sides than 
medially, the setae curved at their tips; genitalia also giving rise to 
some long setae which protrude from sides of subgenital plate. Sub- 
genital plate (fig. 1 ) of unusual form, consisting of a long, slender, 
hairy process arising from complex basal plates (the modified ultimate 
and penultimate sternites). Genitalia (fig. 2) with parameres short, 
bearing some very strong setae; volsellae weakly setose, narrow in 
ventral view but mesal surface wide and concave; basal hooklets 
double, unusually well separated ; parapenial lobes slightly shorter 
than volsellae; aedoeagus very small. 
Remarks. — The spinose hind tibiae and short pronotum suggest 
williamsi as the possible female of this species, and the type localities 
of these two are not too far distant (Ecuador and Central Peru). 
However, the difference in coloration is great, and it seems to me best 
to consider the two distinct for the present. 
