Occasional Papers of the Museum of Zoology 7 



Abdominal tergites light yellowish brown, the posterior 

 margins of the segments very narrowly ringed with dark 

 brown ; segments four to eight, indistinctly darkened ; sternites 

 more uniformly yellowish. Male hypopygium with the pleural 

 appendages black. 



Holotype, male, Hensler's Woods, near Hanover, Indiana, 

 June 16, 1921 (Alexander). 



Allotopotypc, female, June 14, 1921 (Alexander). 



Paratopotypcs, 8 males (Alexander and Rogers). 



Oropcza rogcrsi is the smallest species of the genus so far 

 discovered. It is allied to O. dorsalis Johnson. It is with 

 great pleasure that this interesting fly is dedicated to my friend, 

 J. Speed Rogers, who has done so much to make known the 

 Tipulid fauna of Indiana, low^a, and Michigan. 



