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 tibiae 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-uervules. (Male.) 



Length 37 millim. Alar expanse 43 millim. Pterostigma 1^ 

 millim. 



Hob. Xew 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, tibiae 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-uervules. 

 (Male.) 



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

 millim. 



Hub. Mexico (Deppe). 



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

 appendages are different. 



7. L. forficula! 



Lestes forjicula 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, tibiae 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, 



