W. G. DIETZ 359 



concolorous, heavily margined with fuscous, median stripe fuscous, slightly 

 narrowed posteriorly, the dividing line widened from beginning of middle 

 third and becoming fusiform, interspaces between the stripes a trifle paler 

 and beset with pale hairs. No markings behind the suture. Scutel yel- 

 lowish fuscous. Metanotum grayish fuscous. Pleura yellowish, whitish 

 gray pollinose. 



Abdomen: Venter yellowish fuscous with ill-defined, longitudinal median 

 stripe. Tergum testaceous, dull, a blackish, wide, well defined dorsal 

 stripe extends from base to hypopygium, interrupted by the pale posterior 

 margins of tergites 3 to 5; an oblique lateral fuscous line on tergites 2 to 5 f 

 giving the lateral stripe a zigzag appearance. Eighth sternite brown, 

 lateral incisions deep, somewhat oblique inwardly, the middle lobe much 

 wider than the lateral lobes, all the lobes densely clothed with yellow hair. 

 Hypopygium brown and rather short. Ninth tergite a little longer than 

 wide and scarcely narrowed posteriorly, the apical margin broadly rounded, 

 slightly emarginate each side of middle and transversely impressed imme- 

 diately behind the latter; from the infero-posterior margin project two 

 acutely triangular, rather distant teeth. Ninth sternite with pale, chiti- 

 nized suture, emarginate posteriorly; the bladelike processes curved back- 

 ward in basal part, apical part nearly straight, tapering, apex bent back- 

 wards. No pleural suture. Upper apical process leaflike, broadly ovate," 

 acuminate; the middle apical appendage consists of a subovate inner plate, 

 directed dorsad and drawn out into an acutely triangular apex, and an outer 

 cylindrical part, directed caudad and widened outwardly, it bears on its 

 apex a small, jointlike projection and is beset with coarse hair; the lower 

 appendage is subquadrate and slightly incised on its posterior margin. 

 The lateral appendages bear three processes; the upper process chitinized, 

 robust, not thickened at distal end, the latter blackish, the middle and 

 lower processes membranous, the former triangular, acute, the latter pen- 

 dulous. Legs yellow; femora and tibiae at tip and outer tarsal joints 

 fuscous. 



Wings grayish subfuscous, almost unicolorous and relatively broad; 

 costal and subcostal cells yellowish; stigma and a small spot over origin of 

 praefurca fuscous; an indistinct whitish spot before, and a larger incon- 

 spicuous whitish area beyond the stigma, the latter extends interruptedly 

 through basal half of second submarginal and first posterior cells into the 

 discal and fourth posterior cells; a* faint whitish spot in anal cell before 

 its middle. 



9 , Length, 12 mm. (from anterior margin of thorax to end of ovipositor) ; 

 wing, 11 mm. 



Hind leg: femur, 7 mm.; tibia, 8 mm. 



(Head wanting.) Abdomen brown, mottled with yellow; the lateral 

 stripe of tergum approximately straight, lateral margins of tergites 2 to 7 

 paler. Eighth segment brown, shining. Ovipositor testaceous, short — ■ 

 0.9 mm. — basal part as long as the upper valves, the latter tapering, lower 

 valves a little wider than the upper, parallel and as long as the latter- 



TRANS. AM. ENT. SOC, XL. 



