570 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 50. 



vein without strongly developed bristles; marginal punctiform or but 

 very little longer than thick; postmarginal poorly developed, usually 

 but slightly longer than the marginal; stigmal moderate in length, 

 either clavate in shape or suddenly enlarged near apex; hind wings 

 narrow, the costal cell very narrow but extending to the booklets . 

 Sculpture of head and thorax alutaceous, punctures if present wholly 

 microscopic; vestiture of rather coarse, appressed, whitish hairs as in 

 Aphycus Mayr. Coloration nonmetallic, shades of yellow predom- 

 inating. 



Male. Closely resembling the female in all but the sexual char- 

 acters. 



Type of genus. Aphycus angelicus Howard. 



ANALYTICAL KEY OF SPECIES. 

 FEMALES. 



1. Wings more or less infuscated, face longer than width of eyes 2. 



Wings hyaline, face and cheeks shortened. Coloration pale yellow. 



1. graminicola, new species. 



2. Ovipositor protruded about one-fifth length of abdomen 3. 



Ovipositor barely protruded, fifth funicle joint and club white. 



2. prosopidis, new species. 



3. Dorsal orbits of eyes parallel, front ocellus at center of front and vertex. 



3. websteri, new species. 



Dorsal orbits of eyes diverging anteriorly, front ocellus behind center of front and 

 vertex 4. angelicus (Howard). 



1. PSEUDAPHYCUS GRAMINICOLA, new species. 



Female. Front and vertex about twice as long as wide; dorsal 

 orbits of eyes parallel; ocelli nearly in an equilateral triangle, the 

 posterior pair about their own diameter from the eye margin, and 

 twice as far from the occipital rim; face and cheeks unusually short, 

 face being no longer than the greatest width of eyes ; the latter rather 

 large and covered with an extremely fine, short pubescence. Anten- 

 nal scape narrow, linear; pedicel as long as the first four funicle 

 joints combined, narrowed at base; funicle joints subequal in length, 

 all wider than long and increasingly transverse, the fifth not quite 

 twice as wide as the first; club elongate ovate, a little obliquely 

 rounded at apex, hardly wider than the last funicle joint and as long 

 as the funicle and one-half the pedicel combined. Wings uniformly 

 ciliated; oblique hairless streak interrupted at the middle, its lower 

 part rather widely separated from the lower margin of wing; the 

 postmarginal vein about one-fourth as long as the stigmal, the two 

 veins forming an angle of about 45. Ovipositor protruded one- 

 fourth the length of the abdomen. Length, 0.8 to 1.1 mm., exclusive 

 of ovipositor. 



Front, vertex and no turn of thorax chrome lemon yellow, slightly 

 dusky; face, cheeks, occiput, and underparts of body including 



