440 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
sented by a slight sinuate dilation of the hind margin. Aedeagus a 
simple tube, a minute very broadly triangular spine on each side ven- 
trally distad of middle, on dorsal surface a V-shaped groove above 
apex deepening distad to its midpoint. Genital styles broad, expand- 
ing distally, posterior margin in side view rounded, a small scroll-like 
process on dorsal margin near base. 
Anal segment of female short, deflexed, bluntly triangular below 
anal opening. Lateral styles broad, bluntly rounded at apex, slightly 
longer than anal segment; first valvulae narrowed to a single apical 
spine curving upward at tip, two or three minute teeth subapically on 
dorsal margin. Medioventral process of subgenital plate in ventral 
view somewhat triangular, but bluntly rounded at apex. 
Keg ellipsoidal, pointed at each pole, with three equidistant longi- 
tudinal carinae; pale, smooth, 0.5 mm. long, 0.8 mm. broad. 
Described from two males and two females collected by the writer in 
St. John’s Valley, Trinidad, B. W. I. (June 12, Sept. 13, 1942), resting 
on leaves in thick undergrowth. Holotype male and allotype, 
U.S.N.M. No. 56689; paratype in B.M.N.H. 
6b. Clavus and common stalk of united claval veins as above; anterior sector of 
Cus with less than three veins, not joining media. 
Tribe CENCHREINI 
OMOLICNA, new genus 
Vertex broad, depressed along middle, lateral margins converging 
apically, apical margin straight or slightly concave, posterior margin 
shallowly excavated, width across base greater than length down 
middie, two rows of sensoria on raised area near each lateral mar- 
gin; frons longer than wide at apex (about 2 to 1), width at apex 
approximately one and one-half times width at base, lateral margins 
diverging gradually to apex, devoid of granules, median carina ab- 
sent, usually a longitudinal depression down middle of frons, a series 
of sensory pits inside each lateral margin; frontoclypeal suture im- 
pressed, clypeus slightly tumid with a median carina; genae devoid 
of a subantennal process. Pronotum with antennal foveae large. 
Tegmina long, parallel sided, Sc + R+M fork at basal quarter, Sc+R 
fork between basal third and middle of costal margin, subcostal cell 
long, M forking about level with apex of clavus, Cu, forking level 
or shghtly distad of junction of claval veins, M with five veins reach- 
ing apical margin, three arising from a discal cell. Wings with R 
and M simple to apex, linked by a transverse vein four-fifths from 
base, Cu,. forked just basad of its midpoint, where it is joined by a 
transverse vein from M, the limbs of the fork scarcely diverging to 
