372 Oil Tuo neic Moths from the Upper Siger. 



Primaries. General colour greyer than in B. phcfdusa^ the 

 outline of the hind margin more distinctly curved ; the basal 

 portion of the median nervure up to the first branch longer, 

 the bend of this portion of the wing being further from the 

 base; the narrow brown line which crosses the discal area 

 from the apex curving more towards the posterior angle than 

 in the allied species, the violaceous shading only visible on 

 the outer margin of the brown discal line and only confined 

 to the apical area. 



Secondaries. Similar to those of B. pha'ditsa^ the ocellus 

 being somewhat larger. 



Underside. General aspect much greyer on both wings, 

 the dark brown patches situated at the end of the discoidal 

 cells deeper in colour and larger, and more distinctly outlined 

 with black; the outer margin of tiie primaries more concave 

 between the nervules ; collar entirely white, whereas in the 

 allied form it is of the same colour as the wings. 



Expanse 7'7 inches. 



Bab. Jebba, Upper Niger, October 1898 {Br. Cut/ibert 

 Christy). 



Nudaurelia j ehbte , sp. n. 



Nearest to Nudaurelia Rendalli^ Rothschild (Novit. Zool. 

 iv. p. 182), from Zomba in Nyasaland, but distinguished by 

 the ground-colour being altogether of a more reddish tint. 



Primaries. Shorter than in N. Eendalli, the outer margin 

 more convex, as is also the greyish discal line, which is 

 divided from the hind margin by a band of reddish brown, 

 the same colour being visible over tiie whole of the basal 

 area ; a small transparent ocellus situated at the end of the 

 discoidal cell. 



Secondaries. Tiie ground-colour similar to tliat o( the 

 primaries ; the dark post-discal line, visible in N. Rendalliy 

 absent in this species, and the ocellus in tiie centre of the 

 wing twice the size of that in N. Rendalli. 



Underside. General colour brighter and deeper red, the 

 ocellus at the end of the discoidal cell on the primaries 

 distinctly outlined with black, the greyish discal Jine only 

 faintly indicated. 



Secondaries. Similar to the primaries, the discocellular 

 spot represented by a very narrow transparent streak, the 

 dark markings from the upperside being only faintly indi- 

 cated ; the discal line is faintly visible. 



Antennse black, collar white; while in iV. Rendalli the 

 antennae are tawny brown and the coUar ochraceous. 



Expanse 3'5 inches. 



