82 NEUROPTERA OE NORTH AMERICA. 



Length 2T millim. Alar expanse 30 millim. 

 Hah. 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. 



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



Unknown to me ; perhaps it is A. positum? 



16. A. exsulans ! 

 Agrion exsulans Hagen ! 



Black ; head blue in front (J 4 ), 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 (J*); 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. 



