MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 293 



AnteiiiiiTj iiisorted just above theclypeus; in 9 Sjointed, the scape 

 subclavate, leugtbened, exteiKliug- far above the vertex; pedicel long, 

 thicker than the first funiclar joiut; fuuichir joints siibequal, gradually 

 becoming- wider and shorter, the first the longest and slenderest; club 

 thicker than the last joint of fnnicle and as long as the two preceding 

 joints together, unjointed, but under a high power 3 indistinct joints 

 can be detected; in $ 10-jointed, verticillate from the third joint; ped- 

 icel short and thick; first tiagellar joint as long as the pedicel but 

 thinner and obconic; second nearly twice the length of first, thicker 

 at apex than at base; third to last cylindrical and subequal; last joint 

 elongate, conical. 



Thorax robust, subovoid, convex, the mesonotum broader than long 

 with two delicate grooved lines; scutelluni large, semicircular, con- 

 vex, separated from the mesonotum by a transverse grooved line at 

 base; metathorax exceedingly short, abrupt. 



Wings broad, ciliated, veinless, although a trace of the submarginal 

 vein can be detected when the wing is viewed through transmitted light. 



Abdomen broadly ovate or subcordate, sessile, about as long as the 

 thorax, the first segment very short, transverse ; the second very large, 

 occupying most of the surface. 



Legs rather long. The femora clavate, tibiie subclavate, tarsi slen- 

 der, 5-jointed, longer tlian their tibi.e, the basal joint of hind tarsi 2J 

 times as long as the second. 



Amitus aleurodinis Hald. 



(PI. XII, Fig. 8, 9.) 



Amitus a1euro(l'niifilr{'.i\i\., Sil. .lour. Sci.. 2d ser., ix, p. 110, 18"0; Cr., Syn., Hyni., 



p. 250, 

 EUiptus aleurodis Forbes, 14tli 111. Rep., 18S4. p. 110, PI. ir, Fig. 6, 9 

 Ahiptiis aleurodis Cr., Syn. Hym., i). 250. 



S 9. Length 0.7.5 to 1™'". Polished black; legs variable in color, 

 most frequently biownish-yellow or pale rufous, the cox;e and femora 

 sometimes dusky or blackish; sometimes only the hiiul femora and 

 eox;i3 black. 



AntenniB in 9 Sjointed, as long as the body, terminating in an un- 

 jointed club, brownish-yellow, the club brown; the pedicel and first 

 funiclar joint long, the former a little the longer and thicker, the follow- 

 ing joints to club subequal in length but gradually thickened; in S 10- 

 jointed, yellow, the flagellar joints with verticillate hairs. Thorax with 

 2 delicate furrows. Metapleura pubescent. Wings hyaline, ciliated. 



Abdomen broad, about as long as the thorax; the first segment very 

 short rugose; the second, except foveola^ at base, and the following, 

 smooth, polished. 



Habitat. — Pennsylvania, District of Columbia, and Illinois. 



Types in Coll. American Entomological Society. 



The types I have seen; they are still preserved in the Coll. Ameri- 

 can Entomological Society, although in poor condition. The National 



