376 MACLURIAN LYCEUM. 



6. I. pterelas. — Black ; feet honey-yellow : oviducts elon- 

 gated. 



Inhabits Indiana. 



Body black; immaculate ; antennae piceous beneath ; palpi 

 whitish : wings, central cellule subquadrangular, almost triangu- 

 lar, rather longitudinal; posterior tibiae and tarsi dusky; ovi- 

 ducts nearly as long as the body, aculeus piceous. 



Length three-fifths of an inch. 



Belongs to the genus Pimvpla Fab. 



7. I. hilaris. — Yellowish ; head black, beneath the antennas 

 yellowish. 



Inhabits Indiana. 



Body yellowish, approaching honey-yellow ; head above the 

 antennae and occiput black ; beneath the antennae and mouth 

 yellow, a transverse black line above the mouth ; antennae dusky, 

 yellowish beneath, and still darker above, shorter than the body ; 

 thorax with an obsolete, double, pale yellowish line; wings hya- 

 line; central [72] cellule small, quadrangular, longitudinal, some- 

 what oblique, not distinctly narrowed at either end; posterior tarsi 

 at their tip dusky : abdomen depressed : venter with a dusky spot 

 near the tip. 



Length % nearly three-tenths of an inch. 



8. I. malacus. — Body black ; antennae annulate with white, 

 beginning at the tenth joint and terminating at the eighteenth ; 

 joints very distinct ; wings blackish; small cellule with one bulla, 

 large anal cellule with three bulla and two short processes ; me- 

 tathorax with elevated lines : abdomen with an impressed line each 

 side. 



Length more than half an inch. 



9. I. pectoralis. — Black : abdomen rufous ; antennae black- 

 ish, whitish near the middle. 



Inhabits Indiana. 



Body black ; orbits and all beneath the antennae, yellow ; 

 antennae blackish, 13, 14, 15, 16, joints white : thorax with 

 scutel and a white line before the wings, interrupted before; 

 transverse line beneath it, yellow ; wings hyaline, central cel- 

 lule pentangular, transverse ; pleura black : pectus black, 

 with a large yellow spot between the intermediate and posterior 



