Pomona College Journal of Entomology 453 



visible. Dorsulum ascending, quite small. Metasternal spurs quite small. 

 Wings small, hyaline, but very faintly coriaceous; less than three times as long 

 as broad, broadest across first furcal, rounded apically but not broadly so ; 

 radius as long as second cubital ; first cubital about twice the length of first 

 furcal ; fourth furcal fully half as long as second cubital ; marginal cells sub- 

 equal ; venation rather inconspicuous. 



Male. — Abdomen long and slender. Genital segment medium in size ; genital 

 plate rounded ; claspers bicuspidate, the posterior cusp longer, slightly more 

 acute, glabrous ; the remainder of surface of claspers sparsely pubescent ; anal 

 valve quite large, broad at base, distally more slender and terminating in an 

 uniformly tapering epiphysis; sparsely pubescent. Female. — Abdomen very 

 long, less slender than in male. Genital segment moderately large ; both 

 plates of almost ecjual length, (piite acute; genital pore small; sparsely 

 pubescent. 



Described from one male and one female collected by T. D. A. Cockerell in 

 Colorado. Food plant: Medicago sath'a (alfalfa). 



Epitrioza oaxacensis n. sp. 



(Fig. 152, P; 154, O; 155, R) 



Length of body 1.9 mm.; length of forewing 3.3 mm.; greatest width \.2 

 mm. ; width of vertex between eyes .45 mm. ; with eyes .70 mm. General color 

 light green with a tinge of yellow. Body medium in size. 



Head scarcely deflexed, small, punctate ; posterior margin of vertex arcuate, 

 very slightly elevated narrowly ; vertex not raised plate-like ; discal area with 

 a distinct fovea on each side near posterior margin and a short sulcate de- 

 pression extending toward eye. Anterior margin somewhat emarginate at 

 median suture. Facial cones reduced to globose lobes, very slightly angulated 

 on inner margin ; slightly visible from side, sparsely pubescent ; labrum visible 

 from in front below facial cones. Antennje inserted on frons and base of 

 facial cones sublaterad. 



Thorax moderately arched, broader than head including eyes, quite coarsely 

 punctuate ; pronotum short, arched, scarcely depressed below head and dor- 

 sulum, broader at pleurite than dorsally ; propleurites obliquely set ; prcepimeron 

 small ; forecoxse moderately large, almost entirely visible from in front of 

 mesepisternum. Dorsulum moderately long, usually very narrow, occasionally 

 normally broad, rounded cephalad. Wings rather large, hyaline, about two 

 and a half times as long as broad, broadest across first marginal cell, quite 

 broadly rounded apically ; radius as long as second cubital ; first cubital just 

 twice the length of first furcal; fourth furcal slightly less than half the length 

 of second cubital ; marginal cells subequal ; one specimen presents the anomaly 

 of the furcation distally of the radius of both primarv wings. 



Female. — Abdomen moderately stout. Genital segment long, slender ; dorsal 

 plate slightly longer than ventral, equally acute but less slender; genital pore 

 small, elliptical; pubescence sparse and brief. 



Described form four females collected by D. L. Crawford at Oaxaca, Mex. 



