JULY, 1900. GRAENICHER— THE SYRPHIDAE OF MILWAUKEE COUNTY. 175 
This Species has been observed throughout the north- 
ern part of the United States, from the Atlantic to the 
Pacific coast, and has been previously recorded from 
Wisconsin. 
59. Xylota chalybea, Wied. Very rare. A single specimen 
taken in July, but not visiting flowers. 
Reported for Pennsylvania, Virginia, Ohio and 
Illinois. 
60. Syritta pipiens, L. A very common species throughout the 
season, from April (on catkins of Salix discolor^ Muhl.) 
to October (on flowers of Haiuainclis Virginiana, L.) 
An inhabitant of Europe, Africa, Asia and North 
America, occurring all over the United States. 
61. Spilomyia longicornis, Loew. Not frequent. Several spec- 
imens taken in August on flowers of Eupatorium per- 
folitatuin, L. and Solidago Canadensis, L. 
Has been recorded from the New England States, 
Texas, Ohio, Illinois and Kansas. 
62. Spilomyia fusca, Loew. Rare. One d specimen taken in 
July (on flowers of Solidago scrotina, Ait.) and one ? 
taken in August (on flowers of Eupatorium agcrato- 
idcs, L.) 
Previously recorded from the Eastern States, from 
Canada to Georgia. 
63. Spilomyia quadrifasciata, Say. Not frequent. From July 
(on flowers of Solidago serotina, Ait.) to September 
(on flowers of Solidago Canadensis, L.). 
Reported for the Atlantic States, Illinois and 
Nebraska. 
64. Milesia ornata, Fabr. Verv rare. The only specimen I 
have seen, is a 9 in Mr. F. Rauterberg's collection, 
which was captured by this gentleman two years ago in 
the neighborhood of Milwaukee. 
This species has been recorded from the Eastern 
States, Ohio, Indiana, Illinois and Kansas and extends 
its range southward to Texas, Florida and Guadeloupe. 
The 64 species of this list are distributed among 28 genera, 
and represent about one fifth of the number of species and one 
half of the number of genera enumerated and described in S. W. 
Williston's "Synopsis of the North American Syrphidae," pub- 
lished in 1886. Ten species of the list are common to this conti- 
nent and Europe and three among these, viz.: Eristalis 
tenax, L., Eristalis aeneus, Fahr. and Syritta pipiens, L. have a 
