196 DIPTERA OP NORTH AMERICA. [PART III. 



the wing; between these two crossbands is the black spot, formed 

 by a cloud over the small crossvein ; the stigma is small ; the 

 small crossvein is beyond the middle of the discal cell ; the sub- 

 marginal and first posterior cells are broad ; the end of the third 

 longitudinal vein is gently curved posteriorly and ends exactly in 

 the apex of the wing; the last section of the fourth longitudinal 

 vein does not converge towards the third; the anal cell is com- 

 paratively rather small ; the crossvein, closing it, is a little 

 arcuate, but forms nevertheless a rather acute posterior angle. 

 Sab. Cuba (Gundlach). 



