280 Say^s Descriptions of 



slight tinge of fuliginous ; nervures yellowish ; stigma 

 double, fuscous ; a small, additional, triangular cellule at 



4 ^ ^ ^ __ 



rf tibicE and 



feet 



Length about one tenth of an inch. 



This species is remarkable by the supernumerary cel- 

 lule. 



2. B. miiscuJus. Black ; antennae and feet yellowish j 

 abdomen depressed. 



Inhabits Indiana. 



I 



w 



Body somewhat polished, impunctured, black : antenna 

 dusky, honey-yellow towards the base : mandibles honey- 

 yellow : thorax with the anterior segment not much 

 elongated ; dorsal impressed lines very obvious : mngs 

 hyaline ; radial nervure extended, equally distinctly near 

 to the tip of the wing ; discoidal cellule none : metatho- 



V 1 ^1 « 



rax 



fi 



and minutely lineated each side: abdomen depressed 

 polished, piceous black, distinctly petiolated 

 yellow : thighs a little dusky in the middle. 



Length over one twentieth of an inch. 



This is the smallest species I have met with. 



3. B. peddius. Black ; antennae and feet honey- 

 yellow. 



Inhabits Indiana. 



Body black, with scattered hairs : antenna, particu- 

 larly at base, obscurely honey-yellow ; first joint long : 

 *i "nutely punctured: metathorax punctured and 



terguni polished : feet 



thorax 



Length over one tenth of an inch. 



This species and the following are remarkable for the 

 brevity of the inflected tip of the radial nervure, which is 

 not at all arcuated, but points obliquely inward. 



