70 Descriptions of new species of Hymenoptera. 



as in the preceding, but the superior side is somewhat 

 shorter: tergnm, first segment with a triangular band 

 at tip: pleiira with a white, longitudinal, abbreviated 

 line beneath the wings, and one or two spots behind; 

 beneath with a white spot before the anterior and inter- 

 mediate coxa?: tibiae white line on their exterior sides; 

 posterior tarsi, first and second joints with a white line 

 above. 



Length more than half an inch. 



Second joint of the maxillary palpi dilated as in Pel- 

 tastes, Illig. 



4. I. vinctus. Black: abdomen rufous. 



Inhab. Indiana. 



Body black; head above the antennas and occiput., 

 black: orbital line interrupted behind, and all beneath 

 the antennae except the incisures, white: antennae, basal 

 joint beneath, white; collar with a white line; thorax 

 with a short white line above the anterior wing and an- 

 other below it, from the anterior extremity of these lines, 

 a white line proceeds, and is interrupted before; two im- 

 pressed dorsal lines obsolete behind; scatel and obsolete 

 point behind it. white: wings, central cellule pentangu- 

 lar, transverse: metathorax with somewhat elevated 

 rugae, enclosing a pentangular space, from the angles of 

 which abbreviated lines diverge, the two posterior of 

 which terminate at the short tubercles; feet, anterior and 

 intermediate pairs, pale whitish yellow, the coxa?, white 

 with a black spot behind, the thighs with a black line 

 and tibia? of the anterior pair also with a black line; pos- 

 terior pair black, 2nd, 3rd, and 4th joints of the tarsi, 

 white; abdomen bright rufous, immaculate. 



Length $ half an inch. 



