190 [June 



scutellum slightly convex, smooth and polished, pale yellowish-white, 

 as well as a spot behind it; metathorax black, densely punctured, 

 rather shining, a large white mark on its posterior face, somewhat re- 

 sembling an ill-defined W, elevated lines tolerably distinct, central area 

 small, quadrate. Wings hyaline, slightly iridescent, the extreme tips 

 faintly fuliginous ; nervures fuscous, pale at base, stigma pale brown ; 

 areolet 5-angular or subtriangular. Legs : coxae and trochanters whit- 

 ish ; the posterior coxae exteriorly, extreme tips of their femora and 

 the apical half of their tibiae, black ; the anterior legs before, the basal 

 half of the posterior tibiae and their tarsi, yellowish ; remainder of the 

 legs fulvous, much paler on the two anterior pair and deeper on the 

 posterior femora. Abdomen elongate, subcylindric, very slender at 

 base ; biisal segment not much dilated at tip, black, smooth and pol- 

 ished, its extreme apex with a whitish band ; the 2nd and ord segments 

 finely punctured, shining, the basal two-thirds of the 2nd, and the basal 

 half of two following segments not reachins: the lateral mari^ins, black, 

 remainder of the segments fulvous, tinged with yellowish on the 2nd 

 and 8rd, the former having a fulvous dot on each side of the basal 

 third ; beneath paler, the black bands of the upper surface showing 

 through. Length 6 lines; expanse of wings 10 lines. 

 Hah. — Pennsylvania. Mr. J. H. B. Bland. 



7. Isch. contiguus, n. sp. 



Black: auteuiice with a yellowish annulus: clypeus, scutellum, a trilobed 

 mark on metathorax, and the legs in part, yellowish; apical half of the 1st 

 and 2nd abdominal segments, pale fulvous, remaining segments dull rufo-ful- 

 vous : wings hyaline. 



Male. — Black, polished, clothed with a very short, fine, glittering 

 pubescence ; the clypeus, mandibles, palpi and the frontal orbits be- 

 neath the antenna;, broad beneath the eyes, yellowish-white ; antennoe 

 porrect, almost as long as the body, black, the 11th to 17th joints yel- 

 lowish, the basal joint beneath whitish. Thorax glossy; the meso- 

 thorax with an impressed line on each side in front ; the tegulte, a spot 

 before and a line beneath the wings, yellowish-white ; scutellum slightly 

 convex, polished, entirely yellowish-white, as well as a transverse spot 

 behind, the carina on each side of the scutellum anteriorly is whitish 

 behind ; metathorax roughly punctured, black, with a large, transverse, 

 trilobed, pale yellowish mark posteriorly, the middle lobe largest and 



