Mr. A. G. Butler on a new Genus of Chalcosiid Moths. 181 



very similar to that of the allied genera, the abdomen, how- 

 ever, is closely but coarsely scaled. 



Semioptila torta, sp. n. 



Wings transparent, sparsely scaled, the basal half with rust- 

 reddish or reddish-orange scales, the outer or terminal half 

 with brown scales ; secondaries with an oval orange spot 

 beyond the cell ; body pitchy brown, the abdomen with 

 cupreous-brown scales ; vertex of head and collar orange : 

 under surface pale brown, with a few orange hairs on the 

 pectus. Expanse of wings 24 millim. 



Congo (coll. P. Growley]. 



