180 
Bulletin Wisconsin Natural History Society. [Vol. 10, Nos. 3-4. 
Systropus. 
S. macer Loew. Wyalusing and Rutledge in Grant Co. 
Geron. 
G. calvus Loew. Genoa in Vernon Co. and Wyalusing in Grant Co. 
G. subaurutus Loew. Genoa in Vernon Co. and Rutledge in 
Grant Co. 
Toxophora. 
T„ amphitea Walker Specimens have been taken in the south¬ 
western part of the state at Genoa in Vernon Co. and Rutledge in 
Grant Co.; in the southeastern part at Milwaukee and at Army Lake 
in Walworth Co. 
SYRPHIDAE. 
Microdon. 
M. tristis Loew. A female taken in Dane Co. by Prof. Wm. S. 
Marshall. 
Chrysotoxum. 
A number of writers have called attention to the wide range of 
variation in the markings of the species belonging to this genus. 
C. laterale Loew. A female specimen taken by Mr. Hugo Alt- 
schwager of Milwaukee at Fifield in Price Co. has a length of 13 mm. 
It runs in Williston’s table (Synopsis of N. Am. Syrphidae, p. 14), to 
laterale but does not answer the description in all respects. The 
posterior margin of the first abdominal segment is not yellow, and the 
second segment shows' just a slight indication of yellow on the sides 
of the posterior margin. The legs are yellow, with the exception of 
the coxae, the trochanters, and the bases of the front and middle 
femora, which are black. There is a covering of yellow hair on the 
abdomen, but this does not extend as far as the apical portion of the 
fifth segment. 
Chrysogaster. 
C. nitida Wiedemann. Genoa in Vernon Co.; Wyalusing and Rut¬ 
ledge in Grant Co. 
C. pulchella Williston. Tenderfoot Lake in Vilas Co. 
Pipiza. 
P. festiva Meigen. Dane Co. 
P. pistica Williston. 1 male from Rutledge in Grant Co. 
Paragus. 
P. bicolor Fabricius. Genoa in Vernon Co., and Wyalusing in 
Grant Co. 
