NOTES ON AFRICAN BITTACIDAE 



Esben PETERSEN (Silkeborg). 



Through the kindness of Dr. H. Schoutedex, I hâve had the 

 pleasure of looking upon some Bittacid'ae belqnging to the Musée 

 du Congo belge, and this work led me to extend mv investigation 

 to ail the till no^Y known species from Africa. 



The Bittacidae include a verv homogeneous group of species, 

 and the attempts,that hâve been made for the purpose of founding 

 gênera, hâve never been an easv or satisfactory matter, and onlv 

 little attention has been paid to the nervature of the wings. 



I will hère trv to point ont some spécifie characters found in the 

 nervation of the Bittacid-wing, and probably some of them also 

 prove to be of generic value. 



In the fore wing the anterior branch of the cubitus fuses for a 

 short distance with the média, and in the hind wing the same 

 takes place for a longer distance; but hère the posterior branch 

 also fuses \vith the first anal nervure. In the greater part of species 

 the first anal vein runs into the margin nearer to the base or at the 

 same distance as the furcation of the radial sector and the média ; 

 the \vings are quite equallv broadened towards the apex. In some 

 species the first anal vein runs into the margin far outer than the 

 furcation takes place, and then the apical half of the wing, as a 

 rule, is more broadened and of the same width. In some species is 

 found a cross vein in the apical part of the costal area, and in 



