182 Bulletin Wisconsin Natural History Society. [Vol. 10, Nos. 3-4. 
M. obscurum Say. Two Rivers in Manitowoc Co. and Tenderfoot 
Lake in Vilas Co. 
Syrphus. 
S. americanus Wiedemann. Dane Co. and Tenderfoot Lake in 
Vilas Co. 
S. arcuatus Fallen var lapponicus Zett. Tenderfoot Lake in 
Vilas Co. 
S. ribesii Linne. Dane Co.; Two Rivers in Manitowoc Co.; Tender¬ 
foot. Lake in Vilas Co.; Fifield in Price Co.; Rutledge in Grant Co. 
Allograpta. 
A. obliqua Say. Dane Co.; Tenderfoot Lake in Vilas Co.; Genoa in 
Vernon Co.; Wyalusing in Grant Co. 
Xanthogramma. 
X. flavipes Loew. 1 female, Dane Co. 
Mesogramma. 
M. geminata Say. Tenderfoot Lake in Vilas Co.; Genoa in Vernon 
Co.: Wvalusing- and Rutledge in Grant Co. 
M. marginata Say. Tenderfoot Lake in Vilas Co.; Genoa in Vernon 
Co.; Wyalusing and Rutledge in Grant Co.; Army Lake in Walworth Co. 
Sphaerophoria, 
S. cylindrica Say. Genoa in Vernon Co.; Wyalusing and Rutledge 
in Grant Co.; Two Rivers in Manitowoc Co., and Tenderfoot Lake in 
Vilas Co. Among those from the latter locality one specimen, a small 
female, represents Williston’s var. d (Synopsis N. Am. Syrphidae, p. 
105). The face has a median black stripe, the lateral thoracic stripe 
does not surpass the suture, and the slender abdomen is black with 
three yellow bands. 
Sphegina. 
S. campanulata Robertson. A female from Tenderfoot Lake, Vilas 
Co., taken in July, 1912, by Prof. Wm. S. Marshall. In a general way 
this specimen answers Robertson’s description of the male (Can. Ent. 
vol. 33, p. 284; type locality: Carlinville, Ill.), but it differs as folows: 
Abdomen very much darker than the thorax; in the hind tibiae there 
is an incomplete brown ring near the base in addition to the small 
brown apical one; the second abdominal segment does not surpass the 
remaining segments in length, and the broadest part of the abdomen is 
near the base of the third segment instead of near the apex of the 
fourth. All of these differences may be due to sex, and for the present 
