MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^, 387 



POLYPEZA FOrster. 

 Hym. Stud., ii, p. 123 (1856). 



Head globose, rounded before aiid behind, the occiput not margined; 

 ocelli 3, triangularly arranged; eyes rounded, pubescent. 



Antenn.ie 14-jointed, inserted on a frontal iirominence ; in 9 sub- 

 niouiliform, gradually incrassated toward tips; iu 3 tiliform, the Joints 

 cylindrical. 



Mandibles subrostriforni, bidentate. 



Maxillary palpi 3-jointed; labial palpi 2-jointed. 



Thorax ovate, narrowed into a short rounded collar anteriorly; mes- 

 onotum with two furrows; scutellura rounded, convex, with a deep 

 fovea at base; inetathorax with a central longitudinal carina. 



Front wings pubescent, ciliated, the submarginal uervure reaching 

 the costa at about half its length, the marginal nervure distinct, i)ost- 

 marginal and stigmal nervures very minute, scarcely developed ; basal 

 nervure distinct. 



Abdomen conic-ovate, petiolated, the petiole as long as the metano- 

 tum ; ovipositor prominent. 



Legs clavate, pilose, the tarsi fully as long or longer than the tibise, 

 5-jointed, the basal joint of hind tarsi fully 3 times as long as the second. 



This genus is the only one in the tribe with 14-J<)inted antennae in 

 the 2 and closely resembles a belytid, without a marginal cell. 



Polypeza Pergandei, s}). uov. 

 (PI. XVI, Fig. 2, 9.) 



S 9. Length, 1 to 1.2'""\ Polished black; metathorax, x>etiole, 

 and base and tip of abdomen dull rufous, or piceous. Antennae in 9 

 14-jointed, submoniliform, gradually incrassated toward tips; pedicel 

 longer and thicker than the first flagellar joint; second and third 

 flagellar joints shorter than the first, the joints beyond moniliforin; 

 in $ 14-jointed, long, filiform, fuscous, the first flagellar joint thrice as 

 long as the iiedicel. 



Thorax with 2 distinct furrows; scutellum convex, with a deei) de- 

 pression at base; metathorax short, smooth, but bounded by a carina 

 behind. Tegulne yellowish. Wings hyaline, pubescent, very broad, 

 and with a long fringe at the margins; the submarginal vein reaches 

 the costa a little before the middle of the wing; the marginal vein is 

 rather long, linear; stigmal vein short, with an uncus at tip and a 

 slight indication of a backward directed branch; basal cell distinct. 

 Legs honey-yellow, the fenlora and tibij^' slightly infuscated. Abdo- 

 men ccmic-ovate, petiolated; the petiole twice as long as thick, striated; 

 the second segment occupies most of the remaining surface; segments 

 3 to C very short, the seventh conically pointed, longer than segments 

 3 to () united. 



Habitat. — Arlington, Va. 



Types in Coll. Ashmead. 



