THE CANADIAN ENTOMOLOGIST. 377 



Females. 



A. Wings with a dusky area. 



a. Brassy-green, the scipe yellow-brown. FlagelUim 



incrassate piindatits Thomson. 



b. Verdigris-green, tlie scape white ; flagellum not incrassate ; 



apical tooth of mandible larger albiscapis Thomson- 



B. Wings hyaline. 



1. Blackish-green, with some metallic lustre. 



a. Scape reddish, or partly so, flagellum slender, not clavate ; 



base of abdomen green, shining puncticoUis MoUer. 



b. Scape blackish-green, concolorous, flagellum clavate ; base 



of abdomen with some yellow ; marginal vein a fouith 

 longer than the stigmal ; pedicel a third shorter than 

 joint I of the funicle ; pronotum not narrowed at the 

 meson (eiieovh'idis Girault. 



2. Black, with little or no metallic greenish. 



a. Scape honey-yellow ; flagellum subclivate, brown ; base of 

 abdomen concolorous ; marginal vein twice as long as 

 the stigmal ; pronotum narrowed at 

 meson apatelce Ashmead. 



3. Verdigris or bronze-green, metallic. 



a. Scape pallid ventrad ; flagellum incrassate orclavate ; base 

 of abdomen often pallid ; pedicel not small ; pronotum 

 narrow, subacute at meson rugifrons Thomson. 



Males. 

 The males of but three of the species are known ; they may be 

 recognized by the following index : 

 A. ^Vings hyaline. 



1. Brassy-green, metallic. 



a. Scape reddish ; abdomen with a pallid spot at base ; legs 

 reddish, the cox?e and femora brassy- 

 • green pjmctatus Thomson. 



2. Blackish, with some metallic greenish. 



a. Scape black-greenish ; abdomen concolorous ; flagellum 



filiform ; legs pallid-yellow, coxye 



metallic ceneoviridis Girault. 



b. Scape reddish ; base of abdomen green shining ; flagellum 



filiform ; tibiae white puncticoUis Moller, 



(To be continued.) 



