26 Myron Haniion Swcnk 



but of a paler tint than the rest of the red parts of the head and thorax, 

 wholly unmarked, the segments distinctly and rather strongly punctured 

 both on the tergum and venter, the apical margins of tergites 1-4 dis- 

 tinctly depressed and reflcxed, marginally and ventrally provided with 

 short, thin, pale hair, the apex with ventral tufts of curved black bristles. 

 (S. Length 6-7 mm. Head black, with the clypeus, a large spot on supra- 

 clypeus, which sometimes varies to reddish, lateral face marks which 

 extend upward nearly to level of insertion of antennae where they merge 

 into a red orbital line and which are separated from the concolorous upper 

 part of the clypeus and supraclypeal spot by broad black sutural lines 

 extending down from the insertion of antennae, labrum, and mandibles 

 except tips, yellow. A red line extends from the end of the yellow lateral 

 face marks along the orbital margin to the summit of the vertex and there 

 is a short red stripe along posterior inferior orbits. Thorax black, with 

 the collar, large lateral areas involving most of mesoscutum except a 

 median line, whole of mesoscutellum, a line on metanotum, and a large 

 spot involving the lower two thirds of the mesopleura which sometimes 

 bears a yellow spot of variable size on the anterior margin, red. Antennae 

 dark reddish brown, above with a black line which narrows toward the 

 apex, below with the scape strongly suffused with yellow, joint 3 one- 

 half as long as 4, joint 4 and the next four or five following very feebly 

 denticulate externo-ventrally. Mesoscutellum deeply and acutely bilobed. 

 Face, labrum, cheeks, pectus, coxae, pleura and angles of sides of propo- 

 deum with silvery hair. Tubercles and tegulae coppery red. Wings hj'a- 

 line, a narrow apical band and the distal half of the marginal cell some- 

 what darkened, the nervures and stigma brown, the basal nervure distinctly 

 basad of the transverso-medial, the third submarginal usually distinctly 

 narrowed above, sometimes to a point. Abdomen with the ground 

 color dark brownish red, thje tergites with their apices more or less 

 strongly suffused with blackish, this sometimes involving much of the 

 segment, base of tergite i black right across, tergites 2-4 with yellow 

 lateral spots, large and subpyriform on tergite 2, smaller and linear on 

 3, very tiny on 4, some or all of these spots often almost obliterated by 

 a strong brownish red suffusion. Apex strongly notched. Legs red, 

 suffused with yellowish on front face of anterior femora and tibiae, the 

 posterior face of the coxae trochanters and femora, especially posterior 

 femora, blackish. 



Type. — West Point, Cuming county, Nebraska, June 22, 1905 

 (H.S.Smith).?. 



Allotype— Type lot, J*. 



Paratypcs. — Type locality, i J; Cedar Bluffs, Saunders 

 county, Nebraska, i ^•, Lake Geneva, Wisconsin, June 22, 1901, 

 on SambncHs canadensis { W. D. Pierce), i J*; P^argo, North 



26 



