12 



ARKIV FÖR ZOOLOGI. BAND 11. NIO 26. 



blackish. Vertex blackish, and the black colour extends be- 

 low the antennae, forming a transverse band. Four yellowish 

 spets on the vertex. Antennae at least as long as head and 

 thorax together, dark and with a yellowish band at the tip 

 of each joint; the club only sligthly thickened but regularly 

 yellowish banded. Prothorax broader than long, dark brown, 

 with påle narrow median streak and partly påle lateral mar- 

 gins. The margins with long white hairs mingled with blackish. 

 Mesothorax brownish black with several longitudinal påle 

 spöts or streaks. Metathorax brownish black with two påle 

 spöts dorsally. Abdomen uniformly blackish brown above 



and påle below; apical segment 

 påle above and with black 

 bristles. Femora påle brown 

 and with darker brown sides. 

 Tibiae brown with blackish tip 

 and blackish median band. 

 Tarsi blackish. Legs with long 

 blackish hairs, mingled with 

 whitish. The nervature of the 

 wings much alike to that of 

 P. venustum Gerst.; but the 

 crossveins in the forewing 

 hardly so strongly margined 

 with black. Two rows of cells 

 in the basal half part of the 

 costal area of the före wings. One row of cells between Cui^ 

 and Cu, in the forewing. No anterior Banksian line; the 

 posterior one rather distinct. 



Length of forewing 30 mm; that of hindwing 28 mm. 

 One specimen in alcohol from Cape York, August. 

 I name the species after the late German Entomologist 

 Gerstaecker, who has done so much in exploring the Neu- 

 ropterous fauna of Australia. 



In this species Cui^ is only sub-parallel to Cuia, and the 

 area between Cuu and Cui^ is not as long as usually in the 

 genus. As to the shape and length of femora, tibiae, tarsal 

 joints and spurs the species agrees exactly with P. venustum 

 Gerst. 



Fig 5. Protoplectron gerstaeckeru 



