92 NEUROPTERA OF NORTH AMERICA. 



internal tooth; inferior ones longer, broad, bifid; margin of the 

 tenth segment excised, tuberculous; appendages of the female 

 short, obtuse; margin of the tenth segment cleft; no ventral spine 

 to the eighth segment; wings hyaline, pterostigma rhomboidal, 

 fuscous ; fourteen postcubital cross-nervules. 



Length 36 millira. Alar expanse 43 millira. 



Hob. United States, " very common" (Say) ; Washington ; 

 Berkeley Springs, Virginia (Osten Sacken). 



36. A. funebre ! 



Agrion funebre Hagen ! 



Violaceous ; head with an arcuated fascia above, and a trans- 

 verse occipital streak black ; margin of the prothorax behind, upon 

 the middle and each side subtruncated ; dorsum of the thorax vio- 

 laceous, a black stripe upon the middle, sides pale violaceous, a 

 stripe superiorly, either divided or excised, and a line upon the 

 middle black; feet pale, femora exteriorly, tibiae interiorly and 

 tarsi black ; abdomen obscure violaceous, segment 2 each side 

 with an angulose line, 3 to 6 apex or a spot each side, or entirely 

 and 7 entirely black, 8 fuscous- at base (?), the following ones vio- 

 laceous ; appendages short, superior ones obtuse, rounded at the 

 apex and incurved ; inferior ones longer, oblong, the apex bifid, 

 the superior branch incurved ; wings hyaline, pterostigma rhom- 

 boidal, fuscous. J*. Fourteen postcubital cross-nervules. 



Length 40 millim. Alar expanse 51 rnillim. 



Hob. Mexico (Deppe). 



It is allied to the two preceding species. 



37. A. extraneum! 



Agrion extraneum Hagen ! 



Very similar to the preceding, differs by having the head black 

 above ; the posterior margin of the prothorax rounded ; dorsum 

 of the abdomen black ; margin of the tenth segment excised, be- 

 neath bituberculated ; superior appendages broader, emarginated, 

 the apex not incurved ; the inferior ones bifid, the superior branch 

 very much recurved, obliquely truncated. . 



Length 35 millim. Alar expanse 42 millim. 



Hob. Tampico, Mexico (Saussure). 



