7 NEUROPTERA OF NORTH AMERICA. 



10. L. eurina. 



Lestes eurinus Say! Journ. Acad. Philad. VIII, 36, 3. 



Blue, varied with green and violet ; mouth yellow ; dorsum of 

 the thorax each side with a yellow stripe, which is cleft and dilated 

 at the wings, the sides yellow ; abdomen blue, the segments green 

 at apex ; venter black : superior appendages forcipated, beneath 

 bidentated, the inferior appendages short, conical ; feet black, the 

 femora beneath and tibiae exteriorly pallid ; wings hyaline, ptero- 

 stigma black. (From the description of Say.) 



Length 47 millim. 



Hob. Massachusetts (Harris). 



11. L. unguiculata ! 



Lestes unguiculata Hagen ! 



Green-brassy; mouth yellow; dorsum of the thorax brassy- 

 brown, a line upon the middle and a narrow stripe each side, 

 yellow ; sides yellow pruinose, with a broad, superior brassy-brown 

 stripe, and inferiorly with a black, broad vitta; beneath yellow; 

 feet yellow, femora bilineated with black, tibia3 inside, and tarsi 

 black; dorsum of the abdomen green, the apex brown-brassy, a 

 yellow lunule upon the base of the segments, base and apex of the 

 tergum pruinose, the sides yellow, venter black; superior appen- 

 dages black, yellow at base, forcipated, with a basal internal tooth, 

 and a middle excised lamina, which is dentated upon the margin ; 

 the inferior appendages long, narrow, cruciate, incurved at the 

 apex; wings hyaline, pterostigma oblong, fuscous, the sides mar- 

 gined with yellow ; nine or ten postcubital cross-nervules. 



In the female, the inferior fascia of the thorax is wanting. 



Length 40 30 millim. Alar expanse 43 37 millim. Ptero- 

 stigma 1 millim. 



Hob. Chicago (Osten Sacken) ; Bergen Hill, New Jersey 

 (Guex); New York; St. Louis (Engelmann); Wisconsin (Robt. 

 Kennicott). 



12. L. hamata ! 

 Lestes hamata Hageu 1 



Brownish-brassy; mouth yellow; dorsum of the thorax brown- 

 brassy, with a middle line, and each side a broad stripe, narrowed 

 at the wings, yellow; sides yellow, pruinose, with a superior, broad, 



