124 NEUROPTERA OF NORTH AMERICA. 



Length 70 millim. Alar expanse 96 100 millim. Pterostigma 

 3 millim. 



Hob. Indiana (Say) ; Maryland (Uhler) ; Wisconsin (Kenni- 

 cott); St. Louis; Pennsylvania; Connecticut (Norton). 



9. 2B. armata ! 



^Eschna armata Hagen ! 



Brownish-black, spotted with blue ; head in front obtuse, lurid, 

 above with a T spot and band before the eyes, black ; thorax fus- 

 cous, dorsum each side, anteriorly, with a yellowish-green spot ; 

 sides each with two oblique, yellowish stripes, of which the supe- 

 rior pne is arcuated; femora above, in the middle, rufous; abdomen 

 long, equal, narrowed behind the inflated base, black ; segments 

 3 6 with two, blue, apical spots, and two larger, triangular, yel- 

 low ones, upon the middle, sides blue ? second segment each side, 

 with a line and a narrow, basal triangle, yellow, the last segments 

 almost immaculate, the tenth segment, in the middle, above, with 

 a long, compressed spine, bent backwards; appendages black, the 

 superior ones long, foliaceous, straight, the base inwards nar- 

 rowed, above carinated, the apex exteriorly obtuse, interiorly 

 acute; before the apex superiorly, with an elevated, oval, dentate 

 lamina; the inferior appendage one-half shorter, triangular, nar- 

 row, acute; wings subfumose, posterior ones of the female sub- 

 flavescent at base, pterostigma very small, black; membranule 

 fusco-cinereous, the base whitish. Twenty antecubitals ; twelve 

 postcubitals. 



Length 68 millim. Alar expanse 92 millim. Pterostigma 2 

 millim. 



Hob. Troges del Oro, Mexico (Saussure, Deppe). 



I have examined a mutilated male specimen. 



10. 2B. mutata ! 



sSEschna mutata Hagen ! 



Fuscous, spotted with yellowish-green ; labrum luteous, black 

 anteriorly ; front green, above blue, with a T spot, terminated each 

 side with yellow, and a band before the eyes, black; thorax fus- 

 cous, the sides each with two yellowish stripes ; feet black, base of 

 the femora rufous; abdomen long, equal, the base inflated, rufous, 

 segments 39 with two apical, green ? spots, which are margined 

 within with black; segments 3 T with two triangular, yellow, 



