r ESBEN-PETERSEN, NEUROPTERA AND MECOPTERA. 27 



forewing. The nervature of the discal area very dense, 

 and the area filled up by hexagonal cells. 



1. Dictyochrysinae. 

 Only one genus Dictyochrysa Esb.-P. is known. 



— In the forewing M is irregularly forked, and a triangulär 

 or subquadrangular cell is formed at the base of the fork. 

 Pseudomedia present in the forewing. The nervation of 

 the discal area open, and the cells quadrangular. 



2. Chrysopinae 2. 



2. At the base of the median fork in the forewing a sub- 

 quadrangular cell. Body stout. Nothochrysa Mac Lachlan. 



— At the base of the median fork in the forewing a trian- 

 gulär cell. Body more or less slender 3. 



3. Costal area of forewing very broad in its basal part. 

 Stem of M in the forewing strongly curved away from R. 

 Rs strongly curved, at least in its basal part. 



Ankylopteryx Brauer. 



— Costal area of forewing moderately broad in its basal part. 

 Stem of M almost straight 4. 



4. Discal area with two rows of gradate crossveins. 



Ghrysopa Leach. 



— Discal area with several irregular rows of gradate cross- 

 veins. Anomalochrysa Mac Lachlan. 



Nothochrysa insignis Walker, Cat. Neur. Ins. Brit. Mus., 

 p. 267, 1853; Nothochrysa stictoneura Gerstaecker, Mitth. 

 naturw. Vereins Neuvorp. und Riigen, p. 25, 1885; Notho- 

 chrysa insignita Na vas, Ann. Soc. scient. Bruxelles, fig. 16, 

 p. 323, 1914. — One specimen from Derby, May, and one 

 from Cosaok, June; both localities in N. W. Australia. 



This species seems to be a somewhat wide-spread one 

 in Australia. I have seen it from several localities. Walker's 

 discription of the species is rather insufficient; Gerstaecker's, 

 however, is excellent. The two oblique streaks on the vertex, 



