456 MATERIALS FOR A FAUNA CANADENSIS. 



angle in the males subacute. Length 43 millim. ; alar expanse 60 

 millim. ; pterostigma 2t millim. 

 Sab.: Labrador. 



C. ALBiciNCTA, Hagen. 



Brassy-green, hairy ; labium luteous, front inferiorly, and at the 

 sides luteous, above and the vertex brassy-green ; thorax bright green- 

 brassy ; feet black ; abdomen slender, inflated at the base, then slen- 

 derer, the apex equal, brassy-black, the base on each side and the last 

 segment at the apex being luteous ; wings hyaline, anterior margin in 

 the females subflavescent ; pterostigma fulvous ; anal angle of the 

 males subacute. Length 48 millim. ; alar expanse 66 millim. ; pteros- 

 tigma 3 millim. 



Hah. : Labrador. 



Several other species have been attributed to Canada and Nova 

 Scotia, but their characters are not given. 



Subf. Aeschnina. 



Aeschna, Fahricius. 



M. Herds, Fair. 

 Fuscous, marked with yellowish-green ; front obscure luteous, fus- 

 cous above, each side with a yellowish green spot ; occiput of the fe- 

 male bifid ; thorax fuscous, with a stripe at each side of the dorsum ; 

 angulated at the wings, and the sides with two oblique stripes, green ; 

 feet black, base of the femora subrufous ; abdomen long, stout, hardly 

 broader at the base, fuscous, the base, middle, and apex of the seg- 

 ments with a subinterrupted, narrow, green fascia ; wings hyaline, 

 subflavescent in the middle, the apex sometimes infuscated ; pteros- 

 tigma long, narrow, fulvous. Length 85-96 millim. ; alar expanse 

 108-120 millim. ; pterostigma 5-6 millim. 



Sah.: U, S. Indiana, N. Y. Mass. and Southward. 



M. coNSTRiCTA, Say. 



Brownish-black, spotted with green and blue ; labrum yellow ; 

 head yellowish-green in front, with a black T spot above ; thorax fus- 

 cous, dorsum with a stripe on each side, which is broader at the wings, 

 the sides each with two oblique green stripes ; feet black, femora and 

 tibiae above rufous ; abdomen long, equal, blackish fuscous, very much 

 narrowed behind the inflated base ; segments 3-10, with two dorsal, 

 apical, quadrangular blue spots, 3-8 with two medial triangular yel- 



