Urj THK CANAUIAX KNU >M< (MKJIHT. 



Male. — Slightly smaller than ihe female, rubescencc white all over. 

 No median yellow line on the clypeu<5, and the lateral marks arc smaller 

 than in the female. These are connected with each other by a yellow line 

 along the apical border of the clypeus. The lateral face marks are small, 

 the yellow line on the scape is inconspicuous or nearly absent, and the 

 same is true of the yellow line on the prothorax. No yellow on tubercles. 

 I.'.'gs coloured as in the female. \"ellow of the abdomen confined to a 

 small lateral spot on each side of the second segment, situated on the 

 margin, and similar, exceedingly small spots on the margins of the third 

 segi^ient, and rarely of the first as well. Pygidium reddish yellow. 



Types : Mouth of Yellow River, Burnett Co., Wis, July 28-31. '9°9- 

 (Nos. 31730 and 3'73' ) 



Taratjpes : One male, mouih of Yellow River, July 28-31, '9°9 • 

 four males and two females, Kettle Rivir Rapids, .Aug. 4, 1909, and one 

 male, Randall, .Aug. 5, 1909, all of these localties in Hurnett Co. along the 

 St. Croix River. Specimens in the collection of the Milw. I'ubl. Museum. 

 They were taken on the flowers of Rudbeckia hirta and Heliauthus 

 occiiientaln. This species is distinct from P. allupennis Cr., and /'. 

 lacteipennis Swenk k, Cockerell, one of its main characters being dark legs 

 with a trace of yellow around the knees only. 



PfrJitii maculipfunii, n. sp. 



I'emale. — Length 6 to 7 mm. Ikadand iliorax dark gteen. legs and 

 abdomen brownish black with yellow markings. Hody clothed wiih white 

 pubescence, longest on legs and tip of abdomen. Wings white, with a 

 consi)icuous black dot in the stigma. 



Mead broader than long. Fl.igellum blick above, reddish-yellow 

 below. Scape light yellow in front. Clypeus yellow with two longitudinal 

 black bars, not reaching the ajiex. Lateral yellow f.ice-marks triangular, 

 running halfway uj) the face. .Apex of triangle rounded or truncate, the 

 base often emarginate. These face marks are very v.iriable : in one s|ieci- 

 men on one side of the fa<c a division into two small spots is noticeable. 

 Mandibles yellow, with reddish tips. Tubercles, tegula* and two spots on 

 |)rolhorax yell )W. The melaihorax has a more bluish tinge tiian the rest 

 of the thorax. Abdomen with two yellow spots on the first and interrupted 

 yellow cross bands on the anterior half of the second, third, and fourth 

 segments The spots on the first segment may be absent, and the bands 

 on the remaining segments may be so widely interrupted as to form small 

 spots only. I'ygidium reddish In front and middle legs, tips of femora, 



