284 Say^s Descriptions of 



4. P. colon. Wings with a dusky dot before the 



middle. 



Inhabits Indiana. 



Body blackj polished : antennce nearly as long as the 

 body; terminal joint as long as the first and equal to the 

 four preceding joints together : wings hyaline ; an oval, 

 dusky spot a little beyond the tip of the costal nervure 

 and extending nearly across the wing; costal nervure 

 with its terminal half more dilated than the basal portion 



and blackish : 

 yellow. 



>/ 



Length one twenty-fifth of an inch. 



Readily distinguished by the dusky wing-spot. 



Anteon, Jur. 



A. tihiaJis. Black ; tibiiE and tarsi dull yellowish. 

 Inhabits Indiana. 



Body polished, black : metathorax punctured and with 

 longitudinal slightly elevated lines : tergum towards the 

 tip with a few, rather long black hairs : tibia and tarsi 

 dull yellowish-white. 



Length about one tenth of an inch. 



very 



Hedychrum, Latr. 



1. H. ohoUtum, $ Thorax on the disk 

 punctured ; abdomen entire at tip. 

 Inhabits Indiana. 



^ Body green, varied with purplish : thorax on the disk 

 tinged with purple, and with sparse, slightly impressed 

 punctures : wings fuliginous : metathorax and j,hura with 

 discoidal punctures, and a confluent blackish, double, in- 



