MORE NEUROPTERA FROM JUAN FERNANDEZ AND EASTER ISLAND 313 
Veins with short hairs; the margins strongly ciliated. 5 crossveins in inner 
gradate series; 7 or 8 in outher series. 3 in inner series of hindwing, 5 in 
outer series. 
Length of forewing 6,5 mm; that of hindwing 5,5 mm. 
One female specimen from Masatierra, Juan Fernandez (BACKSTROM leg.). 
This species is easily recognized by its strongly tinged forewings. The 
body of the specimen is somewhat discoloured. 
Hemerobius nigrinus p. sp. 
Palpi and face pale testaceous. Below each eye a dark spot; below the 
antennae 2 large rhomboidal blackish spot, enclosing two small triangular pale 
spots. Posterior part of vertex blackish. Antennae yellowish; at tip of first 
and second antennal joint a dark spot be- 
low. Thorax jet black above. Lateral mar- 
gins of prothorax and a spot above the base 
of each wing yellowish. Venter of thorax 
and of abdomen pale yellow. Dorsum of 
abdomen brown, with paler joinings and 
pleure. Legs pale yellowish. Membrane of 
wings quite hyaline. Venation of forewing 
pale yellowish and with dark streaks. In 
the pterostigmatical area three small dark 
spots; at the posterior angle and at the tip 
of Cw, a dark streak along the margin. 
First and second radial sector brownish -~ 
shaded at the spot where they are touched Fig. 6. Hemerobius nigrinus Q. 
by the crossveins in the inner gradate series. 
5 crossveins in inner gradate series, 7 in outer series. Between Cw, and Cuz 
only one crossvein. Three radial sectors. Venation of hindwing pale yellowish; 
some parts darker. 
Length of forewing 6 mm; that of hindwing 5 mm. 
One female specimen from Masatierra, Juan Fernandez (Backstom leg.). 
The species may easily be separated from South American species by 
its shining black dorsum of thorax. 



