118 DIPTERA OF NORTH AMERICA. [PART III. 



Fourth Section: Ortalina. 



Gen. I. AUTOUIOLA gen. nov. 



Charact. — Front broad, wry much narrowed anteriorly. Eyes rather 

 large, slightly protruding, irregularly rounded. Face in profile 

 somewhat concave, obtusely carinate between the distinct antennal 

 fovese. The anterior edge of the month very much drawn upwards, 

 so that the rather strongly developed clypeus projects considerably 

 beyond it. Cheeks broad. 



Antenna reaching beyond the middle of the face; the first two joints 

 short ; the narrow third joint more than twice as long as the first 

 two taken together, rounded at the end; antennal arista thin, 

 slightly stronger at the basis only, with a very short pubescence. 



Thoracic dorsum not bristly on its middle, before the region of the 

 transverse suture. The tibia?, before the end of their upper side, 

 with a prseapical bristle. 



Thejirst longitudinal vein bristly before its end; the auxiliary vein 

 very much approximated to it; the costa more or less incrassated 

 beyond the end of the first longitudinal vein; the third and fourth 

 longitudinal veins parallel towards their end ; the crossveins not 

 approximated ; the second basal cell and the anal cell compara- 

 tively rather small, the latter rounded at the end ; the sixth longi- 

 tudinal vein complete, but remarkably shoit, and hence, the anal 

 angle of the wing very small; alula comparatively large. 



The genus Automola contains unmetallic species. The picture 

 of their wings generally consists in black spots upon the root of 

 the wings and three black crossbands, the first of which is only 

 at a short distance from the basis, while the second runs over the 

 posterior crossvein and the third lies between the second and the 

 apex of the wing; these bands being more or less incomplete, or 

 the second and third expanding or even coalescing into one large 

 spot, give rise to different modifications of the design of the wings. 



Ortalis atomaria Wied. and trifasciata Wied. from Brazil, 

 may be considered as the types of the genus. North American 

 species have not been discovered yet. 



I have already had occasion to mention in the Introduction 

 that Automola, on account of the proeapical bristles on the tibiae, 

 whicli distinguish it from the other genera, is not very well 

 placed in the family of Ortalidee. 



