DIPTERA OF MINNESOTA. 



121 



Fig. 116. Tetanoccra phimosa, with one antenna enlarged. Lugger. 



Minnesota species so far secured are as follows : Tetanocera 

 umbrarum, Linn. ; T. phimosa, Loew. ; Sciomyza nana. Fall., So. 

 Dak. ; Sepedon armipes, Loew. ; So. Dak. ; S. fuscipennis, Loew. 



PHYCODROMIDAE. 



Of rare occurrence in North America. Members of the only genus 

 we have here are said to be found abundantly in seaweed and other 

 algae thrown up by the waves along the sea coast. The two species 

 given by Aldrich as occurring in North America were secured in 

 Massachusetts and in Alaska. 



SCATOPHAGIDAE=SCATOMYZIDAE. 



Duns: Flies. 



These are the brownish or yellowish flies seeii commonly in pas- 

 tures and elsewhere about cow dung, though they are also said to feed 

 upon insects which they capture. As might be supposed, the larvae of 



