84 NEUROPTERA OF NORTH AMERICA. 



the inferior ones shorter, unguiculated ; apex of the tenth segment 

 in the 9 cleft ; the appendages short ; eighth segment with the 

 ventral spine long ; wings hyaline, pterostigma rhomboidal, nar- 

 row, fuscous ; ten postcubital cross-nervules. 



Length 34 millim. Alar expanse 34 38 millim. 



Hob. Florida (Osten Sacken ; Norton). 



19. A. signatum ! 



A.grion signatum Hagen ! 



Fuscous ; head in front and a cuneiform occipital spot each side 

 yellow; posterior margin of the prothorax rounded; dorsum of 

 the thorax each side with a broad yellow stripe ; sides yellow, with 

 a middle black line ; feet yellow ; abdomen long, slender, fuscous, 

 the sides, segments 3 7 with a basal annulus, 9 entirely and 10 at 

 the sides, yellow ; superior appendages long, straight, subdolabri- 

 form, the apex not broader, at the extremity of the apex subin- 

 curved, black ; inferior appendages short, black, subiricurved ; 

 wings hyaline, pterostigma rhomboidal, fuscous, < ; ten postcu- 

 bital cross-nervules. 



Length 35 millim. Alar expanse 36 millim. 



Hob. Georgia (Abbot) ; Louisiana (Schaum). 



20. A. coecum! 



Agrion coecum Hagen! 



Black ; head brassy-black, with a blue occipital spot each side ; 

 posterior margin of the prothorax each side sub-excised ; dorsum 

 of the thorax brassy-black, each side with a rosy-blue stripe ; sides 

 rosy-blue, with a black stripe inferiorly ; feet yellowish, exteriorly 

 black ; abdomen shorter, slender, black, segments 1 3 rosy-blue, 

 2 with a forked line, and 3 with the sides and apex black, 8 and 9 

 blue ; appendages black, superior ones long, the base beneath do- 

 labriform, the apex cylindrical; the inferior ones short, approxi- 

 mated cylindrical, recurved ; wings hyaline, pterostigma small, rhom- 

 boidal, black ; female paler, abdomen brassy-fuscous, segments 3 7 

 with a yellow basal annulus, the sides, and eighth segment almost 

 entirely blue, the ventral spine acute; 10 12 postcubital cross- 

 nervules. Male. 



Length 31 millim. Alar expense 36 millim. 



Hob. St. Thomas; Cuba. (Osten Sacken, Poey.) 



