1910] Graenirhcr, Flies of Wisconsin. 41 



scutellum yellow, without any mixture of black. First and 

 second segments of abdomen as in latifrons. Third segment 

 black, with a yellow spot on each side in the anterior corner. 

 The black portion is shining except along the posterior margin, 

 where there is an opaque band, produced in the middle into a 

 round spot. Fourth segment entirely black, shining-, with an 

 opaque posterior band and an opaque spot, both of which are 

 smaller than those on the third segment. Fifth segment black, 

 shining, without pollen. Legs mainly black, the yellow markings 

 confined to the tips of all the femora, the basal halves of the 

 front tibi e. the basal two-thirds of the middle tibiaj and nearly 

 the basal halves of the hind tibiae, (laws yellow with black tips, 

 pulvilli yellow. The ?> black dorsal stripes of the thorax are 

 very broad, leaving- 2 slender yellow stripes between them. 

 Plenrae black, not pollinose. 



Type: Divide. Vilas Co., Wis., taken between June 24 and 

 30. 1907 (Cat. Xo. 2.-.147 ). in the coll. of the Milw. Public Museum. 

 I have named it in honor of my friend Mr. C. T. Brues, who, as 

 a member of the Milw. Public Museum collecting expedition of 

 1907 collected the specimen. 



As stated above this species resembles //. latifrons and //. 

 similis, but it may be readily separated from either of these on 

 account of its black face with the conspicuous black shining- 

 median stripe, the broader black stripes on the thorax above, the 

 prevalence of black on the legs, and above all by the darker 

 abdomen which has only one ti-ansverse interrupted yellow band, 

 that on the second segment. 



H. chrysostornp* Wiedemann. Milwaukee and Washington Cos. 



H. conostorm Williston. Milwaukee Co. 



H. distinctus Williston. Milwaukee Co. 



H. lastus Loew. -Milwaukee and Washington Cos. 



H. latifrons Loew. Milwaukee. Washington and Door Cos. 



H. porcus Walker. 1 specimen taken between July 17 and 22, 1909, at 

 the St. Croix dam in Douglas Co. answers Walker's description 

 in most points, but the hairs of the body are dirty brown, not 

 black, and the front and middle legs only have the knees light 

 colored. Besides, this color is a light yellow and not ferruginous 

 as in Walker's description. 



H. similis Macquart. Milwaukee. Washington and Door Cos. 



