224 
5. 
6 . 
1 . 
2 . 
3. 
4. 
5. 
6 . 
7. 
8 . 
9. 
10 . 
Wisconsin Academy of Sciences 9 Arts, and Letters. 
C. nitida Wied. Vernon, Grant, Milwaukee, Marathon, Ju¬ 
neau, and Buffalo Counties. Late summer and fall. Fig¬ 
ures 6, 7. 
C. pictipennis Loew. Milwaukee, Marathon, Winnebago, Dane, 
Jefferson, and Sauk Counties. Late summer. Figures 8, 
9. Females often caught while sweeping along sewer 
drain ditches or swamp cat-tails. 
C. pulchella Will. Buffalo, Vilas, Milwaukee, Racine, Dane, 
Washington, and Douglas Counties. July to late Septem¬ 
ber. Figures 10, 11. 
Pipiza Fallen 
Abdomen with basal interrupted yellow fascia 
Abdomen uniformly dark .. 
Wings with a brown spot in the middle. f estiva 
Wings without a brown spot in the middle. femoralis 
Third joint of antennae at least twice as long as wide. 
Third joint scarcely twice as long as wide, or rounded. 
Small species—4 or 5 mm. long—pile rather long, dilutely lutes- 
cent, that of face white. pubescens 
Larger species—at least 6 or 7 mm. long—pile short, light or 
dark . 
Wings nearly hyaline, pile of face white, body chiefly white 
pilose . radicum 
Wings distinctly smoky; pile chiefly dusky or black... .salax? 
Wings with a brownish cloud. femoralis, form alMpilosa 
Wings without such cloud. 
Hind coxae of male armed with a slender process, dilated and 
compressed toward the end. calcarata 
Hind coaxe without such process. (pisticoides) 
2 
3 
4 
6 
5 
7 
P. pubescens Loew. Wisconsin (Loew). 
P. calcarata Loew. One male Madison, Dane County, June 
14, 1918. Figure 12. This species is easily told by the 
peculiar slender process on the hind coxae and also in a 
smaller form on the middle coxae. It was described from 
New York; I also have specimens from Colorado and Cali¬ 
fornia. 
P. salax Loew. Two males taken at Madison, one June 29, 
1917, and the other August 18, 1918. Figure 13. I re¬ 
fer these specimens to salax with considerable doubt, as 
will be noticed by the following notes: 
