478 



PRIOCEiEiDINGS OF THE NATIONIAI. IVnJSEUM: 



Abdominal terminalia with tenth tergite, right processes, and inner 

 margins of cerci smoky black ; left tergal process amber yellow. Body 

 length 6.5 mm. ; forewing length 4.4 mm., breadth 0.9 mm. 



Head (fig. 127) elongate-oval; eyes medium sized, somewhat inflat- 

 ed ; facets prominent, not outlined by pigmented interspaces ; distance 

 between eyes equal to two and one-half eye widths ; sides behind eyes 

 one and one-half eye lengths long, rather strongly convergent, evenly 

 curved and united with the arcuate caudal margin. Occipital foramen 

 as long as wide, somewhat acutely rounded anteriorly. Gular bridge 

 as wide as submentum length. Submentum longer than wide ; sides 

 evenly arcuate, apical angles acute; anterior margin deeply emargi- 

 nated. Mandibles not curved ventrad at tips, apical teeth small but 

 distinct. 



Figures 127-129. — Oligemhia lobata, new species, holotype male (Texas): 127, Head; 128, 

 terminalia (dorsal); 129, terminalia (ventral). Explanation of symbols on p. 403. 



Wings large, broad, extending beyond tip of abdomen; medium 

 brown, hyaUne stripes well defined. Eight cross veins present between 

 Ri and costa in f orewing, five in hindwing ; three or four cross veins be- 

 tween Ki and Rg+s in forewing, three in hindwing. Ri united at apex 

 by a cross vein to Ro+s, bordered throughout its length by reddish, 

 granular lines. R2+3 represented by a pigmented vein throughout, 

 forked just beyond basal third in both wings; R4+3 forked at basal 

 third in both wings. 



Terminalia (figs. 128, 129) with tenth tergite (10) very long on left 

 side, produced basad beneath ninth tergite to its basal margin. Left 

 process (10 LP) well developed, inner "talon" evenly arcuate, con- 

 tinuous with inner margin, sharp; outer spatulate portion broad, 

 truncate apically, with a fine longitudinal carina to left of middle 

 terminating as a minute point on apical margin. Right process (10 

 RPi) with inner margin nearly straight, outer margin sinuate, apex 



