MORGAN HEBARD 
325 
rounded latero-eaudal angles; caudal margin showing a very feeble, broad 
median concavity, occij)ital medio-longitudinal suture subobsolete. Antennal 
joints abniptly and strongly moniliform. Pronotum with prozona convex; 
lateral margins feebly diverging caudad, caudal margin weakly convex. Teg- 
mina narrowing gradually distad; costal margin curving to the sutural margin, 
angle there sharply rounded. Wings with costal margin curving to the sharp 
angle at the straight sutural margin. Ultimate dorsal abdominal segment 
over twice as wide as long; surface evenly convex, except in medio-distal area 
where it is flattened; distal margin angularly produced, with apex blunt, above 
the dorsal ridge of each arm of the forceps, transverse between these projections. 
Pygidium not apparent. Forceps stout, straight and evenly tapering to the 
strongly incurved, acute apex; ventro-internal margins straight, subattingent, 
microscopically minutely serrulate to distal curvature; dorsal surface convex, 
with a brief but decided proximal medio-longitudinal ridge. Penultimate 
ventral abdominal segment with distal margin feebly convex to a decided, 
though small, median, arcuato-angulate emargination. 
Length of body, 4; of pronotum, .62; of tegmen, 1.66; of exposed portion of 
wing, .19; of forceps, .75: width of pronotum, cephalic, .62; of pronotum, caudal, 
.72; of tegmen, .59; of abdomen, 1.22 mm. 
Head and ultimate dorsal abdominal segment blackish brown. Antennae 
clear tawny, the last segments alone slightly suffused. Cephalic limbs, median 
femora and tibiae, caudal femora and remaining portions of abdomen blackish 
chestnut brown; median tarsi and caudal tibiae paler, caudal tarsi buffy. 
Pronotum with prozona blackish brown, with a weak, bluish metallic luster; 
metazona clear light buff, suffused with brown proximo-mesad toward the 
prozona. Tegmina and wings blackish brown, with a decided metallic luster, 
green, blue or purple in different lights. Hairy covering of abdomen and 
forceps conspicuously golden in some lights. 
The type is unique. 
GERAX 35 new genus 
The present genus shows Labiine characters only in the simple 
head and femora. The pronotum, male forceps and presence of 
arolia all indicate Diplatyine affinity. The remarkable arma- 
ment of the metaperameres of the male is distinctive. 
The genus is related to Eucjerax, but differs widely in the greatly 
developed eyes, with facets larger and each distinctly more con- 
vex, short cheeks, smooth pronotum and tegmina, wide differences 
in the male genitalic armament and much shorter caudal meta- 
tarsus and decidedly longer second caudal tarsal joint. 
3-* This ridge may be very similar to that found in Gerax and Eugerax. In 
the single specimen before us the proximo-dorsal portion of the forceps is 
hidden by the ultimate dorsal abdominal segment. 
33 From 7 cpax = a prize. 
TRANS. A.M. ENT. SOC., XLIII. 
