33 More Neuroptera from Juan Fernandez 

 and Easter Island. 



By 

 P. ESBEN-PETERSEN, 



Silkeborg. 

 With 6 text figures. 



By the kindness of Professor Yngve Sjostedt, Stockholm, I have had 

 the pleasure to look over some Neuropterous insects, collected by Professor Dr. 

 Skottsberg's expedition. 



Longings Navas, Zaragoza, has worked out material from the same source, 

 and in this work, Vol. Ill, Nr. i6, he gives descriptions of four species, viz. 

 Hemerobius Skottsbergi, Hemerobius Sjdstedti, Chrysopa mimdaris and Chrysopa 

 ptierula. The descriptions of the two last named species are based on mate- 

 rial in the larval stage, and I regret that these two descriptions have been 

 published. The genus Chrysopa contains several hundreds of species, but the 

 development is only known of quite a few. The confusion in the genus as 

 to the synonymy is at present overwhelming, and when descriptions of new 

 species, only known in the larval stages and from out-of-the-way localities, 

 increase the number of difficulties, it will be almost impossible to arrange such 

 a genus in systematical respect. 



The material here at hand contains two species of the genus Chrysopa, 

 one species of the rare and very interesting genus Gayomyia and three species 

 of the genus Hemerobius. 



It is quite possible that one or both of the larvae, described by Navas 

 as new species, may belong to the below named species, but at present it is 

 impossible to settle that question. 



Chrysopa lanata Banks, Proc. Ent. Soc. Wash., XII, 154, 19 10. 



One specimen from Easter Island, June (Backstrom leg.), was present. 



This species is a very wide-spread one in South America, and I possess 

 a rather long series of specimens from diiferent localities. It is easily known 

 by its long slender and rather acute wings, the venation of which is strongly 

 haired. M-^ and M2 in the forewing coalesce before the basal crossvein between 

 Rs and M, Gradate veins rather numerous and placed in almost straight 

 directions. Venation greenish, but the gradate veins and the crossveins between 

 Cu^ and Cu^ in the forewing sometimes brownish. The genae reddish, a faint 



