148 E. T. CRESSON. 



29. agnitus, Cress. Proc. Eut. Soc. Phil, iii, p. 151, 9 . 



ILib. — Del., 111., Tex. The abdomen of this species has a faint 

 bluish tinge; the orbits, two dots on clypeus, a broad white aunulus 

 on antennae, line before wings, spot on scutellutn and spot or line at 

 tip of postpetiole are all white ; postpetiole punctured ; wings sub- 

 hyaline ; coxal scopa distinct, whitish. Length 9 .56 inch. 



30. pepticus, n. sp. 



%. — Large, black, rather shining, face, except black central stripe dilated on 

 clypeus, orbits, interrupted behind summit of eyes, sides of clypeus, base of 

 mandibles, palpi, scape beneath, upper margin of prothorax, spot on tegulse, 

 line beneath, spot on scutellum, sometimes a dot behind, si)ot on four anterior 

 coxae beneath, line on four anterior femora and their tarsi beneath, and some- 

 times a spot at tip of first abdominal segment, all white or yellowish-white; 

 wings subhyaline, smoky on apical half; postpetiole longitudinally rugose; 

 gastrocoeli large and deep. Length .75 — .80 inch. 



Hah. — N. J., III. This may prove to be the % of Orpheus. It 

 differs from vitti'frons chiefly by the immaculate posterior tibiae. 



31. pervagus, n. sp. 



%. — Black, subopaque, abdomen tinged with blue; face entirely, clypeus ex- 

 cept central black spot, base of mandibles, orbits, palpi, scape beneath, collar, 

 upper margin of prothorax, tegulse, short line beneath, spot on scutellum, four 

 anterior coxse more or less beneath and their femora and tibiae beneath, white; 

 wings faintly tinged with fuscous; abdomen densely punctured, smooth at tip, 

 postpetiole and base of second segment longitudinally rugose, gastrocoeli large 

 and deep. Length .63 inch. 



^a6.— Canada, (Pettit). 



32. citatus, Prov. Nat. Can. ix, p. 8, S . 



Hah. — Can., N. H. A slender black species, with sides of face, 

 annulus on antennje, scutellum and spot at tip of abdomen white; 

 wings hyaline, faintly clouded at apex; postpetiole smooth and pol- 

 ished ; gastrocoeli large and deep. Length %, .52 inch. 



33. merus, n. sp. 



%. — Black, subopaque; orbits broad on face and interrupted behind summit 

 of eyes, sides of clypeus, spot on base of mandibles, scape beneath, broad annu- 

 lus on antennae, collar, up{)er margin of prothorax, spot on tegulae, short line 

 beneath, scutellum, sometimes spot behind, round spot on flanks of metathorax, 

 spot on anterior coxse, line on their femora beneath, four anterior tibiae beneath, 

 apical margin of first abdominal segment, sometimes a small s})ot on each side 

 of second segment at tip and apical margin of sixth or seventh segments more 

 or. less, white : wings hyaline, faintly dusky at apex ; postpetiole narrow, smooth 

 and shining, second and third segments densely punctured, roughly so on base 

 of second, gastrocoeli large and deep. Length .52 inch. 



Hah. — Mass., Va., (Ridings). It is probable that specimens of this 

 species will occur with apical margins of all the abdominal segments 

 more or less white. 



