JULY, 1900. GRAENICHER— THE SYRPHIDAE OF MILWAUKEE COUNTY. 173 
Eristalis transversus, Wied. An abundant species, from 
May (on flowers of Scnccio palustris, (L.) Hook.) to 
October (on flowers of Hamamelis Virginiana, L.). 
An inhabitant of the Atlantic States, from Canada 
to Florida and also reported for Ohio and Illinois. 
Eristalis vinetorum, Fabr. Very rare. 2 9 specimens 
captured, one in August on the flowers of Solidago 
serotina, Ait. and the other in September on the flowers 
of Solidago Canadensis, L. 
This species extends southward to Cuba and Brazil 
and has otherwise been recorded from Mexico, a few 
Southern States, Illinois, Indiana and Pennsylvania. 
Helophilus latifrons, Loew. Not as common as the next, 
for which it is easily mistaken. Captured in September 
on the flowers of Aster laevis, L. 
Has been previously recorded from the Atlantic to 
the Pacific States and Texas. 
45. Helophilus similis, Macq. Abundant, from April (on cat- 
kins of Salix discolor, Mnhl.) to October (on flowers 
of Aster cordifoliiis, L.). 
Reported for New England, Canada, Indiana, Illi- 
nois, Kansas and California. 
46. Helophilus laetus, Loew. Not frequent. Taken in May (on 
flowers of Vagnera stellata, (L.) Morong.) and July 
(on umbels of Pastinaca sativa, L.) 
Has been previously recorded from 2 Eastern States 
and Illinois, and is one of the few species, which has 
been formerly reported for Wisconsin. 
47. Helophilus chrysostomus, Wied. Rare. From May (on 
flowers of Vagnera stellata, (L.) Morong.) to August 
(on flowers of Alisma Plantago-aquatica, L.) 
Recorded from several Eastern States and Georgia. 
48. Helophilus distinctus. Will. Very rare. I have so far taken 
only a single specimen of this species. 
Previously reported for Connecticut, Pennsylvania 
and Virginia. 
49. Helophilus conostomus. Will. Rare. Taken in June on 
flowers of Syrnphoricarpos racemosus, Michx. and July 
on flowers of Carduus arvensis, (L.) Robs. 
Previously reported for the Atlantic States from 
Canada to New York and for Illinois. 
42. 
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44. 
