226 Wisconsin Academy of Sciences, Arts, and Letters . 
2. Abdomen with more or less red on the dorsum, scutellum us¬ 
ually with a distinct yellow border. Mcolor 
Abdomen wholly greenish black, scutellum testaceous only at 
the tip .... anyustifrons 
14. P. angustifrons Loew. Several specimens from Dane County. 
Mid-May to Mid-September. I have females of this doubt¬ 
ful species taken in copulo with males distinctly bicolor. 
15. P. bicolor Fabr. Numerous specimens from Vernon, Grant, 
Pierce, Milwaukee, Washington, Burnett, Winnebago, 
Fond du Lac, and Dane Counties. Middle May to last of 
September. Figures 16, 17. 
16. P. tibialis Fallen. A common species, specimens taken in 
Vernon, Grant, Manitowoc, St. Croix, Pierce, Dane, Mil¬ 
waukee, Washington, Marathon, Burnett, and Taylor 
Counties. May to September. Figures 18, 19. 
Chilosia Meigen 
1. Eyes thinly pilose; antennae yellow. hoodiana 
Eyes bare... 
2. Arista plumose ... 
Arista bare or pubescent. 
3. Scutellum with distinct marginal bristles.species? 
Scutellum without distinct marginal bristles. 
4. (Legs almost entirely yellow, face not pilose. prima 
Legs mostly black. 
5. Abdomen wholly shining, metallic green. comosa 
Abdomen with second segment and an hour-glass spot on the 
third opaque . sororcula 
6. Shining metallic blue, wings nearly twice the length of the 
abdomen . cyanescens 
Shining metallic greenish .f ^allipes 
1 tmstis 
17. C. hoodiana Bigot. Several females from Douglas, Burnett, 
and Manitowoc Counties. 
18. C. prima Hunter. Four males and one female from Milwau¬ 
kee County. 
19. C. sororcula Will. Specimens from Burnett, Sheboygan, 
Douglas, and Manitowoc Counties. 
