16 NEUROPTERA OF NORTH AMERICA. 



The colors of the living insect were made known to me by 

 Baron Osten Sacken. 



4. A. tuberculatum. 



Agrion tuberculatum Selys, Poey Ins. Cuba, 467. 



Black-brassy; a round blue point upon each side of the occiput; 

 posterior lobe of the prothorax produced in the middle ; thorax 

 yellowish-green, in front black-brassy, with two blue stripes; eighth 

 segment of the abdomen blue, the tenth, in the males, tuberculated 

 behind ; wings hyaline, pterostigma rhomboidal, fuscous ; ptero- 

 stigma of the male black within. (From the description of De 

 Selys Longchamps.) 



Length 35 millira. Alar expanse 37 millim. 



Hab. Cuba; Campeachy ; Cayenne. 



5. A. ramburii ! 



Agrion ramburii Selys, Poey Ins. Cuba, 468. 



Brassy-brown, varied with green and blue ; head each side with 

 a green occipital point ; prothorax with the posterior lobe small, 

 having a flat tubercle upon the middle, in the female broader ; 

 dorsum of the thorax brassy-brown, each side with a narrow green 

 vitta; the sides green, with a medial black stripe at the wings; 

 feet pale exteriorly, lineated with black ; abdomen brassy-fuscous, 

 the sides green, segments 3 — 6 with a yellow, medially interrupted, 

 basal band, segments 8 — 9 blue, with a black stripe each side ; 

 appendages short, superior ones thick, triangular, excavated on 

 the inside ; inferior ones acute, unguiculated ; the last abdominal 

 segment with the posterior margin elevated in the middle and bifid ; 

 wings hyaline, pterostigma small", rhomboidal, in the anterior wings 

 of the male black. 



9 Either thorax reddish-yellow, the dorsum of the thorax with 

 a broad brassy stripe, the whole of the abdominal dorsum brassy- 

 fuscous; or pruinose, black, with the apex of the abdominal seg- 

 ments also black. 



Length 25 — 28 millim. Alar expanse 27 — 30 millim. 



Hab. New York ; Washington ; Dalton, Georgia (Osten 

 Sacken); Philadelphia; Bergen Hill, New Jersey (Guex.) ; St. 

 Louis. I have not seen the specimens of De Selys ; he notes 

 them to be from Martinique ; Campeachy ; Yucatan and Yera 

 Cruz; are they different? I formerly called my species ^^no?z 

 expertum ! 



