1910] Graenicher, Flies of Wisconsin. 33 



Helophilus, a description of which (H. bruesi) is given in this 

 paper. Last year's collecting expedition of the Publ. Museum 

 down the St. Croix River in the northwestern corner of the State 

 furnished 64 species for the three families, 2 of which, Anthrax 

 nemakagonensis and Zodion lativentre proved to be new, and 

 were described in the Canadian Entomologist, January 1910, pp. 

 26-29. 



In the St. Croix region a number of species not occurring in 

 the Milwaukee region were encountered, several of these, mainly 

 from the upper St. Croix, being decidedly boreal, while others 

 show a more southern or western range of distribution. Boreal 

 species not known from the southeastern part of the State (Racine, 

 Milwaukee or Washington Cos.) are especially the following: 



Syrph itJir. Pyrophwna granditarsus. 



Pyrophcena rosarum. 



Syrphus disjectus. 



Helophilus porcus. 



Temnostoma cequalis. 

 Conopidw. Pliysocephala furcillata. 



Syrphus disjectus and Physocephala furcillata are both char- 

 acteristic species of the St. Croix region, having been met with 

 in comparatively large numbers, especially in Douglas and Burnett 

 Cos. Judging from the fact that specimens of P.furciUata have 

 been found also in Marathon and Door Cos., it is probable that 

 this species occurs throughout the northern part of the State. 



Of the three Bombylids Anthrax tegminipennis, Lcpidophora 

 (egcriiformis and Systropus maccr we have no other records for 

 the State except those from the St. Croix region. These species 

 have a rather extended range of distribution, and will in all proba- 

 bility be found to inhabit the greater portion of the central and 

 western areas of the State, but they seem to be absent from the 

 eastern area bordering on Lake Michigan. 



BOMBYL1ID.*:. 



Spogostylum. 



S. albofascialum Macquart. Specimens from Milwaukee and Burnett 



Counties. 

 S. anale Say. Specimens from Milwaukee Co. 



