Descriptions of new species of Hymenoptera. 71 



5. I. inquisitor. Black; feet honey-yellow; posterior 

 tibiae white, biannulate with black. 



Inhab. Indiana. 



Body black; palpi whitish; thorax with a white spot 

 at the anterior base of the superior wings; icings, central 

 cellule quadrangular, longitudinal, narrowed a little to the 

 tip; feet honey-yellow; posterior tibia? white, a black 

 annulus near the base and another somewhat larger at tip; 

 joints of the posterior tarsi whitish, blackish at their tips; 

 oviduct nearly as long as the abdomen. 



Length one-fourth of an inch. 



Preys upon the larva (of a Bruchus ?) that feeds on the 

 seeds of the Clematis. 



6. I. j)terelas. Black; feet honey-yellow; oviduct elon- 

 gated. 



Inhab. Indiana. 



Body black, immaculate; antennas piceous beneath; 

 palpi whitish; wings, central cellule subquadrangular, 

 almost triangular, rather longitudinal; posterior tibia; 

 and tarsi, dusky; oviduct nearly as long as the body, 

 aculeus piceous. 



Length three-fifths of an inch. 



Belongs to the genus Pimpla, Ejror. 



7. I. hilaris. Yellowish ; head black, beneath the an- 

 tennas yellowish. 



Inhab. Indiana. 



Body yellowish, approaching honey-yellow ; head 

 above the antennas and occiput, black; beneath ^the an- 

 tennas and mouth yellow, a transverse black line above 

 the mouth; antenna: dusky yellowish beneath, and still 

 darker above, shorter than the body; thorax with an ob- 

 solete, double,, paler yellowish line; icings hyaline; cen- 



