170 BULLETIN OF WISCONSIN NATURAL HISTORY SOCIETY. VOL. 1. NO. 3. 
20. Syrphus umbellatariim, O. S. Rare. Taken in August 
visiting the flowers of 2 species of Umbelliferae ( Oxy- 
polis rigidus, (L.) Britt., and Conioselinum Chinense 
(L.) B. S. P.) 
Previously reported for New Hampshire, Arizona 
and Alaska. 
21. Syrphus xanthostomus; Will. Rare. i and 1 9 
the latter taken in June on the flowers of Loiiiccra Sul- 
livantii, Gray. 
Has been previously recorded from Pennsylvania 
and Ohio. 
22. Didea fasciata fuscipes, Loew. Not common. From June 
(on umbels of Angelica atropurpnla, L.) to August (on 
umbels of Oxypolis rigidtts, (L.) Britt.). 
Reported for Connecticut, Pennsylvania, Ohio and 
Illinois. 
23. Xanthogramma flavipes, Loew. Very rare. A single 6" 
spcimen captured in May. 
Previously reported for 3 Atlantic States. 
24. Allograpta obliqua, Say. A common species, from May (on 
umbels of Thaspiuui trifoliatum aureum, (Nutt.) 
Britt.) to October (on flowers of Hamamelis Virgini- 
ana, L.) 
An inhabitant of North and South America (Argen- 
tine Republic). Recorded from different parts of the 
United States, from the Atlantic to the Pacific Ocean. 
25. Mesogramma (Mesograpta) polita. Say. Not rare, flying 
in autumn. Taken in September (on umbels of Sium 
cicutacfoliuin, Gmelin.) and October (on flowers of 
Aster cGrdifolius, L.) 
Recorded from several states of the Atlantic coast, 
from Illinois and Kansas and from Cuba. 
26. Mesogramma marginata. Say. Abundant from May (on 
flowers of Sanguinaria Canadensis, L.) to October (on 
flowers of Aster lacvis, L.) 
Occurs throughout the northern part of the United 
States, from the Atlantic to the Pacific coast, and has 
been reported for Florida in the South. 
27. Mesogramma geminata, Say. Abundant throughout the 
season, from April (on catkins of Salix discolor, Muhl.) 
to October (on flowers of Hamamelis Virginiana, L.) 
Inhabits South and North America. Has been 
recorded from the Atlantic and Pacific States and from 
Illinois. 
