MATERIALS FOR A FAUNA CANADENSIS. 459 



thorax brassy-green, with a narrow yellow stripe on each side ; sides 

 yellow, brass}- -green above, with a black stripe at the wings below ; 

 feet yellow, apex of the femora with an exterior black stripe ; abdo- 

 men yellow, segments 1-2, having the dorsum biassy-green, the rest 

 spotted with brassy-green, somewhat varied according to age; the 

 tenth segment has a long process upon the middle, oblique, cyUndrical, 

 and bifid at the apex ; wings hyaline, pterostigma of the posterior 

 ones rhomboidal, black, of the anterior larger, rufous, surrounded 

 with yellow, not attaining to the costal margin. The female differs in 

 having more orange on the head, thorax, and abdomen, and the pter- 

 ostigma of each of the wings regular yellowish. Length 23-2/ millim,; 

 alar expanse 23-30 millim. 



Hah.: U. S. Indiana, Maine, Mass. and Southward. 



A. IRENE, Hagen. 



Bright brassy-green ; head yellow in front ; third article of the 

 antennae aunulated with pale colour ; posterior margin of the pro- 

 thorax broad triangular in the male, biemarginated in the female ; 

 dorsum of the thorax bright brassy-green, sides yellowish, brassy- 

 green above ; feet pale, exteriorly lineated with black ; abdomen slen- 

 der, brassy-green ; the sides and a basal lunule on segments 3-6 yel- 

 low ; segment 8 with an apical spot, 9 with a triangular dorsal one, 

 10 almost alogether blue in the male, 9 blue at the sides, 10 at the 

 apex in the female, margin of 10th segment excised dentated; wings 

 hyaline, pterostigma short, rhomboidal, luteous Length 25-28 

 millim.; alar expanse 28-30 millim. 



Hah.: U. S. Chicago, Wisconsin, Illinois. 



Lestes, Leach. 



L. FORCiPATA, Bamhur. 



Brassy. green ; mouth yellow ; dorsum of the thorax brassy-green 

 in the male, with a middle line and stripe on each side yellow in the 

 female ; sides yellow, with a superior green brassy stripe, dilated at 

 the wings, or the male with an inferior black stripe ; feet yellow, 

 femora bilineated with black, interior of tibiae and tarsi black ; ab- 

 domen brassy-green with yellow sides, pruinose at the base and apex 

 in the male, a basal lunule upon the segments yellow ; wings hyaline, 

 pterostigma black, margined with yellow at the sides. Length 35 

 millim. ; alar expanse 40 millim. ; pterostigma 1^ millim. 



Hah.: U. S. Chicago, Wisconsin. 



