ELLIPTERA. 123 



The auxiliary vein hardly reaches beyond the middle of the 

 wing ; the subcostal cross»vein is at a considerable distance from 

 its tip (about three lengths of the great cross-vein) ; the costa is 

 distinctly incrassated between the tip of the auxiliary vein and 

 the apex of the wing ; the tip of the first longitudinal vein is at 

 about the middle of the distance between the two last-named 

 points ; the tip of the second longitudinal vein is again at about 

 the middle of the distance between the tip of the first vein and 

 the apex of the wing. The origin of the second longitudinal 

 vein is a short distance beyond the subcostal cross-vein, and at a 

 Considerable distance before the tip of the auxiliary vein; the 

 latter distance is more than double the length of the great cross- 

 vein ; the praefurca, starting at an exceedingly acute angle, runs 

 very close by the first vein ; beyond the origin of the third vein 

 the interval between the first and second veins is a little greater ; 

 no marginal cross-vein is perceptible ; the stigma is rather long. 

 The third vein has its origin not far from the middle of the distance 

 between the tip of the auxiliary and that of the first longitudinal 

 vein ; its first segment forms a sharp curve, almost a quarter of a 

 circle, being sometimes provided at this place with a stump of a 

 vein ; its latter segment is gently arcuated. First posterior cell 

 Shorter than the submarginal ; its inner end almost in a line with 

 the third posterior cell, which is coale scent with the discal cell ; 

 the second posterior cell is about half the length of the first ; the 

 great cross-vein is almost in one line with the inner end of the 

 third posterior cell, sometimes a little anterior to it ; the fifth 

 vein is gently arcuated beyond the great cross-vein ; the sixth 

 and seventh veins are nearly straight ; the anal angle of the wing 

 is moderately projecting. 



The foregoing description applies to the wing of EU'cptera 

 omissa Schin. But Mr. Loew informs me that he has discovered 

 a second species, the venation of which is somewhat different ; 

 the auxiliary vein is longer ; and the subcostal cross-vein is nearly 

 opposite the inner end of the submarginal cell. 



Elliptera omissa is blackish in coloring, and has, according to 

 Dr. Schiner, somewhat the appearance of Dicranomyia morio F. 

 (or morioides 0. S.) ; it is not rare in Austria. 



The most remarkable feature of the venation of this genus is 

 the course of the second vein, which is so much approximated to 

 the first, as if to foreshadow an absolute coalescence. The position 



