Heterocera from Tropical Africa. 351 



Beachaetona, Hamps. 

 Brachartona unxia, sp. n. 



Primaries and secondaries purplish brown. Head and 

 antennas black ; thorax brown ; abdomen and legs blackish 

 brown. 



Expanse -fa inch. 



Bab. West Africa, Lagos (Mus. Bruce). 



Brachartona (?) tikea, sp. n. 



Primaries and secondaries semihyaline smoky brown, the 

 veins and the fringe darker. Head, antennas, and thorax 

 black ; abdomen golden yellow on the upperside, the sides 

 and underside and legs black. 



Expanse fa inch. 



Hab. South Africa, Transvaal (Mus. Bruce). 



Nyctemeridae. 



Aletis, Hubn. 



Aletis alba, sp. n. 



Primaries and secondaries semihyaline white ; primaries, 

 the costal margin broadly bordered with black, the apical half 

 of the wing greyish black ; a large white spot slightly beyond 

 the end of the cell, below which, on the outer margin near 

 the anal angle, are two white spots ; the base of the primaries 

 pale orange : secondaries with a dentated black margin. 

 Underside the same as the upperside. Head, antenna?, and 

 thorax black ; collar spotted with white ; abdomen yellow ; 

 legs greyish black. 



Expanse 2£ inches. 



Hab. West Africa, Sierra Leone (Mus. Bruce). 



Primaries white, the apical half and the veins black ; a 

 large oval-shaped white spot close to the apex ; the costal 

 margin black : secondaries white, the veins black ; the apex 

 and outer margin bordered with black ; the black margin is 

 dentated near the anal angle. Head, collar, and underside of 

 thorax pale yellow ; antennas, thorax, and abdomen above 

 black, banded with white ; the underside of the abdomen 

 white ; the anus yellow ; legs greyish black. 



Expanse 2 inches. 



Hab. East Africa, Dar-es-Salaam (Mus. Bruce). 



