the British Neuroptera-Plaiiipen^iia. 199 



Wings short and broad, apex scarcely acute. Anterior 

 wings (PI. XI. fig. 4) with almost all the neuration, ex- 

 cepting the longitudinal veins and sectors, blackish: in 

 the posterior ivings, only the costal veinlets, those between 

 the sub-costa and radius, and some of the gradate vein- 

 lets, blackish ; the rest pale, almost colourless. 



After death, the colour changes to very pale whitish- 

 yellow. 



Length of body 34-45 lines; expanse of fore-wings 

 11-15 lines. 



A common species in summer, in woods. Remarkable 

 for its very pale and fugitive colour. 



4. Chkysopa flavifeons, Brauer. 



Chrysopa flavifrons, Brauer, Haid. Abh. 1850, p. 6, pi. 

 i. fig. 2; Neurop. Aust. 60; Hag. Ent. Ann. 1858, p. 22. 



Pale green, front yellowish. 



Head with the vertex unspotted, inflated, but the raised 

 portion is flattened, or even slightly concave ; front with 

 a reddish or reddish-fuscous line on each side ; palpi 

 broadly annulated with blackish, the terminal joint wholly 

 blackish; antennce shorter than the wings, the basal joint 

 short, strongly inflated. 



Prothorax with an irregular reddish or reddish-fuscous 

 mark on each side of the middle above, and with slight 

 markings at the sides of the anterior and posterior angles ; 

 broad, the sides strongly rounded, a transverse raised 

 space rather behind the middle, the posterior margin 

 divided in the middle by an impressed line ; with a few 

 blackish hairs, especially on the sides. 



Abdomen with pale pubescence. 



Legs pale, the tarsi somewhat yellowish ; ungues brown, 

 long, the basal portion dilated internally, the curved por- 

 tion distant from it. 



Wings broad, the apex scarcely acute. Neuration of 

 the anterior ivings with each costal veinlet black at each 

 end, green in the middle ; sub-costal basal veinlet, gra- 

 date veinlets wholly, and cubital veinlets at each end, 

 black; pterostigma dioxk. green. Posterior wings with the 

 costal veinlets wholly black, the others as in the anterior. 



After death, changes to yellow, the veins greenish. 



Length of body 4-5 lines ; expanse of wings 14-15 lines. 



Not a common species. I have taken odd specimens 

 at various times, chiefly about Mickleham, in autumn. 



