146 [June 



and third segments pale testaceous, obfuscated on each side. Length 

 6:7 hnes ; expanse of wings 11^ lines. 



Hab. — Rocky Mountains, Colorado Territory. 



19. Ich. puUatus, n. sjj. 



Black : face and scutellum white, the former with a black stripe down its 

 middle; wings clear; central area of metathorax transverse, rather large. 



Male. — Black ; head with the orbits, interrupted behind, the face, 

 clypeus, spot on mandibles, and the palpi, whitish ; a broad black vitta 

 extending from the base of the antennas to the anterior margin of the 

 clypeus ; autenuje three-fourths the length of the body, slender, black, 

 the basal joint beneath with a white spot. Thorax densely and finely 

 punctured ; the mesothorax in front with a shallow impression on each 

 side ; the collar above, tegulee, a sutural line before and a short one 

 beneath the wings, white ; scutellum rather convex, polished, yellow- 

 ish-white, behind it a small spot of the same color; metathorax rather 

 finely and confluently punctured, the elevated lines tolerably well de- 

 fined, shining, the central area rather large or moderate, semicircular, 

 transverse, convex in front. Wings almost hyaline, having a very faint 

 tinge of fuliginous especially on the apical margin ; nervures fuscous, 

 costa piceous, stigma paler ; areolet 5-angular. Legs black, a spot on 

 the anterior coxae beneath, the anterior femora and tips of the middle 

 feiuora within and the two anterior pairs of tibiae and tarsi, except a 

 black line behind, whitish ; the basal two-thirds of the posterior tibiae 

 and the joints of the tarsi exteriorly except their extreme tips also 

 whitish ; tips of all the tarsi black. Abdomen elongate, rather slender, 

 shining, densely and finely punctured; basal segment bilineated, rather 

 smooth, the peduncle short; basal foveas of the second segment small, 

 deep and obHque ; apical segments polished ; beneath black. Length 

 6 — 6^ lines; expanse of wings lOA — 11 lines. 



Hah. — Delaware (Dr. Wilson) ; Illinois (Dr. Lewis). 



20. Ich. cordatus, n. sp. 



Black ; sides of face, a cordate spot on scutellum and legs in part, white : 

 wings subhyaline; central area of metathorax transverse. 



Alale. — Head black, the frontal orbits (interrupted on each side of 

 the insertion of the antennse, narrow above, broader below and con- 

 stricted on each side of the clypeus), a spot on each side of the cly- 

 peus, spot on mandibles, and the palpi, white ; antennas more than half 



