3wO APPENDIX. 



Length of the body nearly two-fifths of an inch. 

 This species was also found in Missouri. 



HEDYCHRUM, Latr. 



1. H. ventrale. Green polished; tergum tinged with blue; 

 antennae blackish at tip; venter bronze. 



Inhabits Pennsylvania. 



t^ntennx, excepting the first joint, blackish-brown ;yron^ 

 impressed; stethidium with dilated punctures; thorax in 

 the middle between the wings, with a purplish shade; wings 

 dusky, nervures fuscous; tarsi, excepting the basal joint, 

 dark brownish ; tergum passing to bluish-purple towards 

 the tip ; tip very obtusely rounded, terminal segment 

 longer than the preceding one; venter entirely dull 

 bronzed. 



Length more than one-fourth of an inch. 



2. H. dlmidiatum. Green polished; posterior half of the 

 venter bronze. 



Inhabits Pennsylvania. 



Jintennsa, excepting the basal joint, and palpi, brown- 

 ish-black ; front somewhat impressed; vertex between the 

 stemmata dark purplish ; stethidium with dilated punc- 

 tures ; thorax longitudinally on the disk dark purplish ; 

 luings dusky, nervures fuscous; tarsi dark brownish; ter- 

 gum, longitudinally in the middle slightly tinged with 

 bluish, ultimate segment less than half the length of the 

 preceding one ; venter green, posterior half coppery. 



Length nearly three-tenths of an inch. 



From the collection of Mr. William W. Wood. 



