82 NEUROPTERA OF NORTH AMERICA. 



Length 27 millim. Alar expanse 30 millim. 

 Hob. Moretia, Mexico (Saussure). 



15. A. verticale. 



Agrion verticale Say, Journ. Acad. Philad. VIII, 37, 1. 



Obscure blue, somewhat pruinose ; head green, each side with a 

 blue occipital spot; thorax blue, dorsum with a middle brassy 

 stripe, and the sides with a black line ; feet deep green, femora 

 exteriorly black, tibiae with an exterior black line ; abdomen brassy- 

 green, the incisures pale, segments 9 10 blue; 10 with the pos- 

 terior middle somewhat elevated, elevation excised (J*), or the 

 segments pruinose, black at their apex, with pale incisures (9); 

 venter pale green, with a middle black line ; wings hyaline, ptero- 

 stigma rhomboidal, fuscous. (From the description of Say.) 



Length 25 millim. 



Hob. Indiana (Say). "Rare. August." 



Unknown to me ; perhaps it is A. positum? 



16. A. exsulans ! 



Agrion exsulans Hagen I 



Black ; head blue in front (^), or yellowish-green (9) ; occiput 

 each side with a cuneiform blue spot ; hind margin of the protho- 

 rax short, rounded, with a small tubercle upon the middle, which 

 is larger in the female ; dorsum of the thorax black, each side with 

 a blue stripe; sides blue, with a narrow black line upon the mid- 

 dle (<^); or green, with a black middle stripe divided by a yellow 

 line ; a humeral yellow stripe each side, margined with fuscous, 

 and with the sides green (9); feet pale, exteriorly lineated with 

 black ; abdomen brassy-black, the sides and a ring upon the base 

 of segments 2 6 bright blue; segment 10 with the posterior 

 margin elevated and subexcised ; appendages black, superior ones 

 rounded bifid, the inferior branch longer ; inferior appendages 

 unguiculated, slender, recurved; or (9) dorsum of the abdomen 

 fuscous, sides dirty green, and with the apex of the ninth and the 

 whole of the tenth segment blue ; the appendages short ; the 

 eighth segment having a long ventral spine ; wings hyaline, ptero- 

 stigma small, rhomboidal, black (J"), or luteous (9) ; nine post- 

 cubital cross-nervules. 



Length 33 36 millim. Alar expanse 40 millim. 



