OF WASHINGTON. 239 



Wings membranaceous, oblong-oval, subhyaline, shining, smooth, to 

 ward the apex with sparse shallow impressed points, gently widening at 

 base, then of nearly equal width, regularly rounded at apex, tip between 

 radius and fourth furcal close to the latter; veins very prominent, cubitus a 

 little shorter than discoidal part of subcosta, n distinct, moderately long 

 pterostigma, radius nearly straight throughout; stem of second fork 

 curved and not parallel with radius, second furcal much longer than an}' 

 of the other f urea Is ; first marginal cell much larger than the second. 

 Genital parts of male without appendages or lobes, genital plates of female 

 simple. 



Agrees with Psyllopsis in the presence of frontal cones, but 

 differs by the much greater deflexion of the head, with the fron 

 tal cones not depressed below the level of the vertex, the shorter 

 antennae, the greater convexity of the thoracic surface, the vena 

 tion and by the sexual characters. 



Euphalerus nidifex, n. sp. 



Length 2 mm. Color pale ochre-yellow vary 

 ing to greenish yellow or reddish yellow, head, 

 thorax, wings and legs speckled with minute 

 black or brown dots, wings slightly whitish. 

 Surface opaque, impunctate, vertex of the form 

 described above, surface flat, discal impressions 

 nearly obsolete, frontal cones nearly as long as 

 the vertex, very little diverging, not acute at tip ; FIG. Z. 

 antennae not reaching to the posterior margin of 



mesonotum, pale yellow, tips of intermediate joints and terminal ioints 

 black, 3djoint one-fourth longer than the 4th, Qth and ioth small and form 

 ing a distinct club. 



Dorsulum more than twice wider than long at middle, front and hind 

 margins nearly equally rounded; mesonotum barely as long as dorsulum, 

 decidedly descending posteriorly, convex transversely. 



Wings gently widening at base, thence remaining of nearly equal width, 

 2\ times longer than wide, regularly rounded at apex, slightly whitish, 

 transparent, not rugose, but the small black dots are impressed at the outer 

 part of the wing; veins strong, pretty regularly tesselated with brown 

 dots; stigma moderately long, narrow and not different in coloration; 

 radius straight and only at terminus slightly curved anteriorly; stem of 

 second fork nearly twice longer than that of the first fork; first furcal as 

 long as cubitus, terminating obliquely on the costa, second furcal twice 

 longer, nearly straight at basal half, then suddenly curved and terminat 

 ing obliquely on the costa, third and fourth furcals of equal length, each 

 about one-third longer than the first; first marginal cell quadrangular 

 rather than triangular and much larger than second marginal cell ; tip of 

 wing close to fourth furcal within discoidal cell. 



