Descriptions of new species of Hymcnoptera. 77 



rather truncated at tip, and emarginated by the curvature 

 of the radial cellule; smaller central cellule with a small 

 angle at tip, where it is widest, and gradually tapering to 

 its opposite extremity without any curvature ;feet honey- 

 vellow, short, anterior coxae with a whitish reflexion; 

 abdomen short, almost sessile, not compressed. 

 Length about one-fifth of an inch. 



ALYSIA. Latr. 



1. A. ridibunda. Rufous: head, wings and tip of the 

 tergum, black. 



Inhab. Indiana. 



Body yellowish-rufous; head black, a rufous spot each 

 side of the mouth; antennae longer than the body; wings 

 blackish; central cellule large, longitudinal, acute before, 

 nervure connecting with the carpal spot placed obviously 

 behind the middle of the cellule; feet black; tibiae and 

 tarsi more or less tinged with dull rufous; tergum de- 

 pressed, near the tip a large black spot. 



Length $ nearly one-fifth of an inch. 



2. A. pallipes. Black; feet, abdomen at base and an- 

 tennas at base, white. 



Inhab. Indiana. 



Body black, polished; antennae fuscous, first and se- 

 cond joints whitish; mandibles piceous; icings hyaline, 

 central cellule in length equal to double its greatest 

 width; feet white; abdomen white at base. 



Length one-twentieth of an inch. 



BRACON. Jur. Fab. Lath, 

 1. B. exhaluns. Black; abdomen sanguineous. 

 Inhab. Indiana. 



Head black: palpi whitish: antennae shorter than the 

 Vor.. I. 11 



