North American Hymenoptera. 25S 



pale yellow extending on the tip of the first segment, 

 which is sub-bisinuate or slightly three-angled ; second 

 segment as well as the first with an elevated line : 

 oviduct not exserted beyond the tip of the abdomen^ 



black. 



^ Third and following segments of the tergum annulate 



with black ; no elevated line on the tergum, nor three 

 angled appearance of the tip of the first segment. 



Length less than one fifth of an inch. 



Resembles vestUor, but is more slender, larger, and 



differently marked. 



8. B. ruguUsus. Honey-yellow; head, breast and 



three lines on the thorax black. 



Inhabits Indiana. 



Body honey-yellow: head with rather wide and 

 slightly impressed punctures, which on the front are 

 transversely confluent into minute rug» : mouth, obscure 

 piceous : antentKB obscure piceous, black towards the 



thorax somewhat tinged with sanguineous 



interrae 



diate vitta is a rvigous space, with a slightly elevated 

 line : wings hyaline ; nervures and carpus blackish ; 

 cubital cellules three ; rnetathorax rugous, with an ele- 

 vated Une : abdomen longitudinally rugous, oblong ; with 

 three larger segments, decreasing in length ; and three 

 smaller ones at tip, taken together hardly longer than the 



third : ^pectus in the middle black. 



Length one fourth of an inch . 



The ma^rnitude of the three basal segments of the 

 abdomen is remarkable In this species. 



9- B. transversm. Granulated; nervure from the 



stigma nearly transverse. 

 Inhabits Indiana. 



