Bulletin Wisconsin Natural History Society. [Vol. 10, Nos. 3-4. 
174 
T. epistatus. Osten-Sacken. Specimens from Fox Lake in Dodge 
Co., Dane Co., Golden Lake, in Waukesha Co., and Milwaukee Co., 
range from 13 to 15 mm. in length. 
T. astutus Osten-Sacken. A female from Winchester, Vilas Co., 
is nearly 15 mm long. The gray stripes on the thorax, as also the 
gray markings on the abdomen are quite conspicuous, and answer the 
description. 
T. atratus Fabricius. Prescott in Pierce Co., Genoa in Vernon Co., 
and Milwaukee Co. 
T. carolinensis Macquart. 5 male specimens taken in July and 
August at Cedar Lake, Washington Co., hovering in the air, on the 
summit of a high hill (called “Fox Hill”). The median white triangu¬ 
lar markings of the abdomen are very distinct, especially so on seg¬ 
ments 2 and 3; they are decidedly more conspicuous than on some 
specimens from Cincinnati, Ohio, in the collection of the Public 
Museum of Milwaukee. 
T. costalis Wiedemann. Milwaukee Co. and Racine Co. 
T. flavipes Wiedeman. One female from Tenderfoot Lake, Vilas 
Co., in the collection of Prof. Wm. S. Marshall. Length about 18 mm. 
Differs from the original description as follows: face and front yel¬ 
lowish pollinose (not grayish) ; on the pleurae the hairs are black 
instead of yellow; the black on the middle and hind femora covers at 
least the basal two-thirds. The type locality is Labrador; it occurs also 
in East Siberia, but has, up to the present time, not been reported 
from any part of the United States. 
T. giganteus Degeer. A specimen from Tower Hill, Sauk Co. (Prof. 
Wm. S. Marshall). 
T. lasiophthalmus Macquart. One of our most common species. 
Nemakagon river in Burnett Co.; Hudson in( St. Croix Co.; Apostle 
Islands in Lake Superior, (Ashland Co.) ; Two Rivers in Manitowoc 
Co.; Cedar Lake in Washington Co.; Milwaukee Co. and Dane Co. 
T. lineola Fabricius. Specimens from Prescott, Pierce Co.; Rut¬ 
ledge in Grant Co.; Cedar Lake in Washington Co.; Milwaukee Co. 
and Dane Co. 
T. mexicanus Linne. This is a species of southern distribution, 
that has not been reported from any part of the United States north 
of New Jersey. A female from Fountain City in Buffalo Co. is about 
9 mm long, and much smaller than specimens in the collection of the 
Public Museum of Milwaukee from Florida. It is also more greenish 
in color, especially on the abdomen, but it agrees otherwise with the 
description, and runs to this species in Osten-Sacken’s key (Prodrome, 
