264 Say^s Descriptions of 



Ijne ; nervures whitish : stigma large, triangul 



nervure 



slightly towards the tip ; second cubital cellule destitute 

 of the exterior nervure : tergum oval, somewhat pohshed; 



first 



/^ 



Length over one tenth of an inch. 



nervures 



paler than those of any other species I have seen. 



7, M. Usst'igmata. Stigma elongated, appearing 

 double. , 



Inhabits Indiana. 



$ Body black, polished : antenna at base and moutli 

 piceous : tJiora^t with two oblique sutures and one at the 

 base of the scutel : wings hyaline ; nervures pale brown- 

 ish; nervure of the radial cellule as distinct as the others, 

 rectilinear, parallel with the rectihnear part of the costal 

 edge; second cubital cellule desthute of the exterior 

 nervure ; stigma much elongated, the length being obvi- 

 ously more than three times the greatest breadth, brown ; 

 a stigma-hke spot at the origin of the nervures of the dis- 

 coidal cellule on the costal margin much smaller and dis- 

 tinct from the stigma: abdomen elongate, subclavate, 

 being slender at base : feet pale honey-yellow. 



Length about one tenth of an inch. 



The much elongated stigma and the small spot which 

 precedes it, being larger and more separate than usual, 

 Readily distinguish this species. 



8. M. calliptera. Wings yellowish at base, bifasciate 

 with blackish. 



Inhabits Indiana. 



J 



and stisma 



feet 



