LESTES. 67 



Hah. Chicago (Osten Sacken); Indiana; Mass. (Say); Mary- 

 land; Pennsylvania; Xew Jersey (Ubler); New York (Calverly) ; 

 Savannah, Georgia; Miniiesota (Kennicott). 



I have se|p two females, very much like this {L. hahilis mihi 

 from Pennsylvania and Georgia) ; they have the tarsi yellow, and 

 the margin of the valvules dentated. Is it a distinct species? 



3. L. alacer! 



. Lestes alacer Hagen ! 



Black; mouth yellowish; dorsum of the thorax black, each side, 

 exteriorly, with a yellowish-green stripe, sides livid, with a broad, 

 fuscous, middle fascia; feet yellow, beneath and tarsi black; femora 

 and tibiss with an external black line ; abdomen slender, black, sides 

 yellow ; appendages black, the superior ones forcipated, the base 

 interiorly with a tooth, and upon the middle a rounded lamina ; 

 the inferior appendages a little shorter, straight, flat, distant, with 

 the apex truncated ; wings hyaline ; pterostigraa black, narrow, 

 margined with yellow in front ; nine postcubital cross-nervules. 

 (Male.) 



Length 39 millim. Alar expanse 42 millim. Pterostigma 1^ 

 millim. 



Hah. Western Texas, Pecos River (Capt. Pope). 



4. L. stulta! 



Lestes stulta Hagen ! 



Black, mouth yellow; dorsum of the thorax black, a line upon 

 the middle, and each side exteriorly a narrow stripe, yellow; sides 

 yellow, with a superior, broad black stripe, which is triangularly 

 dilated at the wings ; feet yellow, femora exteriorly, tibiae interiorly, 

 and tarsi black; wings hyaline, costa somewhat yellow; pterostig- 

 ma long, fuscous, margined on both sides with yellow ; eleven 

 postcubital cross-nervules. (The abdomen is wanting.) 



Length — ? millim. Alar expanse 52 millim. Pterostigma 1^ 

 millim. 



Hab. California. 



5. L. congener! 



Lestes congener Hagen! 



Black, mouth yellow ; dorsum of the thorax black-brassy, a line 

 upon the middle and a narrow stripe each side yellow ; sides yel- 



