North American Symenoj^tera. 



257 



tf Separating nervure arcuated; second cubital cellule elongated; 



the nervure from the stigma inserted at its middle. 



Celereon. 



11. B. inescator. Pale dull yellowish ; palpi and feet 

 whitish- 



Inhabits Indiana. 

 9 Body dull yellow, 



with a slight intermixture of 

 honey -yellow, immaculate; antennce blackish towards 

 the tip: mandihles piceous at tip: ivings hyallnej with a 

 very slight dusky tinge, and yellowish at base ; nervures 

 of the middle of the wing and disk of the stigma fuscous : 

 abdomen oblong sub-obovate : oviduct black, hardly half 



ft 



the length of the abdomen : paJj^i long, white : feet 

 white. 



Length of the body two twenty-fifths of an inch. 



12. B. ^uUdtor. Black; abdomen at base and feet 



yellowish. 



Inhabits Indiana. 



9 Body black, a little polished : antenna towards the 

 base obscure yellowish, first joint pale honey-yellow: 

 mouth pale piceous : mandibles at tip blackish ; wings 

 hyaline ; nervures brownish ; stigma fuscous : tergum 

 oblong sub-obovate, disk near the base dark honey -yel- 

 low: oviduct longer than the abdomen, black : Jeet pale 



honey-yellow. 



Length less than one tenth of an inch. 



13. B. honestor, Nob. Contr. Macl. Lye. vol. I. p. 

 78, belongs also to this subdivision. 



14. B. paulalor. Black ; abdomen short ; feet w^hit- 

 ish. 



Inhabits Indiana. 



Body black : head large : antenn<z fuscous, obviously 

 longer than the body : mandibles yellowish : ;paJ^i white : 



VOL, I. PART III. 



34 



