NO. 2195. NEW SPECIES OF HYMEN OPTERA—ROHWER. 155 



not connected with the antennal foveae; middle fovea represented 

 by a large, shallow, slopping-walled depression; antennal furrows 

 nearly complete; frontal foveae punctiform, obscure; ocellar basin 

 triangular in outline, open below, the lateral walls sharply defined 

 and meeting on the postocellar furrow; postocellar furrow straight; 

 postocellar area two and one-half times as wide as long; the lateral 

 furrows curved, complete, the area uniformly convex; postocellar 

 line subequal with the ocellocular line ; antennae filiform, the fourth 

 joint slightly longer than the fifth; vertex shining; thorax shining; 

 anal cell of the hind wings with a very short petiole; stigma long, 

 broader at base, gradually tapering to the transverse radius, then 

 sharply oblique; sheath strongly concave above, apex acute, gradu- 

 ally tapering to the base. Black ; clypeus, labrum, spot on the man- 

 dibles, legs, and abdomen, except the two basal tergites and median 

 spots on the following tergites, yellowish; the upper part of the 

 mesepisternum, the margin of the prescutum, margin of the scutum, 

 scutellum, and scutellar appendage, ferruginous; posterior margin 

 of the pronotum and tegulae pallid ; wings hyaline, venation brown,, 

 costa and stigma yellowish. 



Male. — Length 5 mm. The depressed portion of the clypeus is 

 narrower than in the female; otherwise the head characters are the 

 same; hypopygidium obtusely pointed apically. Black; clypeus, 

 labrum, spot on the mandibles, palpi, angles of the pronotum, 

 tegulae, most of the tergites, stcrnites, and legs yellowish white; 

 wings as in female. 



Type-locality. — Charter Oak, Pennsylvania. Described from two 

 females (one type) and one male recorded under Bureau of Ento- 

 mology No. Hopk. U. S. 11364. The larvae of this species feed on 

 Hieoria glahra. Material collected by T. E. Snyder and reared 

 May 7, 1914, by William Middleton. 



Type.—C2it. No. 19041, U.S.N.M. 



PERICLISTA SIMILARIS. new spedeB. 



This species is closely allied to alhicollis Norton, but may be dif- 

 ferentiated from that species by the better defined ocellar basin, 

 which is nearly triangular in outline, and by having the lower wall 

 of the basin well defined. (The ocellar basin of alhicollis is pentag- 

 onal in outline, the walls are rounded, and the lower walls poorly 

 defined.) 



Female. — Length, 5 mm. Clypeus flat, the apical margin broadly, 

 subangulately emarginate, lobes obtusely rounded ; supraclypeal area 

 rectangular in outline, uniformly convex ; supraclypeal foveae rather 

 shallow, indistinctly connected with the antennal fo^'eae: middle 

 fovea represented by a shallow, sloping-walled, elongate depression; 



