68 NEUROPTERA OF NORTH AMERICA. 



low, with a superior, broad black-brassy stripe, which is dilated at 

 the wings ; beneath yellow, margined with black ; feet yellow, 

 femora exteriorly and tibise interiorly black ; abdomen slender, 

 black-brassy, with a yellow lunule upon the base of the segments ; 

 superior appendages black, yellow at the base, forcipated, with a 

 basal tooth interiorly, and a middle lamina, with the margin ser- 

 rated; inferior appendages short, approximated, the apex obtuse, 

 recurved ; wings hyaline ; pterostigma oblong, black ; ten post- 

 cubital cross-nervules. (Male.) 



Length 37 millim. Alar expanse 43 rnillim. Pterostigma 1J 

 millim. 



Hob. New York; Texas (Friedrich). 



6. L. simplex! 



Lestes simplex Hagen ! 



Black, mouth pale; thorax black, dorsum each side with a broad 

 yellow stripe, which is cleft at the wings ; sides and beneath black, 

 pruinose; feet yellow, femora exteriorly, tibia? interiorly, and tarsi 

 black ; abdomen slender, black, pruinose at the apex, a basal yel- 

 low lunule to the segments; appendages black, superior ones forci- 

 pated, with an internal basal tooth, the middle of the inner margin 

 somewhat dilated, serrulated ; inferior appendages short, approxi- 

 mated, the apex obtuse, curved underneath ; wings hyaline; ptero- 

 stigma oblong, black ; twelve or thirteen postcubital cross-nervules. 

 (Male.) 



Length 40 millim. Alar expanse 43 millim. Pterostigma 1J 

 millim. 



Hob. Mexico (Deppe). 



Similar to L. congener, but the thorax is narrower and the 

 appendages are different. 



7. L. forficula! 



Lestes forftcula Ramb.! Neuropt. 247, 5. 



Black, mouth pallid; dorsum of the thorax pale blue, each side 

 with a narrow, brassy-green stripe, margined with black ; a middle 

 blue line, also margined with black; sides and beneath black, pru- 

 inose; feet yellow, femora bilineated above with black, tibia? black 

 interiorly, the anterior ones exteriorly lineated with black, tarsi 

 black ; abdomen brassy black, with the apex pruinose, the middle 

 segments at base and a lunule at apex, pallid ; appendages black, 



