Descriptions of neio 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; wings, central 
Cellule quadrangular, longitudinal, narrowed a little to the 
tip; feet honey-yellow; posterior tibias 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. \. pterelas. Black; feet honey-yellow; oviduct elon- 
gated. 
Inhab. Indiana. 
Body , black, immaculate; antennss piceous beneath; 
palpi whitish; wings, central cellule subquadrangular, 
almost triangular, rather longitudinal; posterior tibiae 
and tarsi, dusky; oviduct nearly as long as the body, 
aculeus piceous. 
Length three-fifths of an inch. 
Belongs to the genus Pimpla, Fabr. 
7. I. hilaris. Yellowish ; head black, beneath the an- 
tennae yellowish. 
Inhab. Indiana. 
Body yellowish, approaching honey-yellow ; head 
above the antennae and occiput, black; beneath the an- 
tennae and mouth yellow, a transverse black line above 
the mouth; antennse dusky yellowish beneath, and still 
darker above, shorter than the body; thorax with an ob- 
solete, double, paler yellowish line; ivings hyaline; cen- 
