Equatorial African Micro-lepidoptera. 49 



and the preceding streak, and followed by a larger white costal spot 

 immediately before the apex, a few white scales at the costal 

 extremity of the third chalybeous streak ; from the dorsum arises 

 ji rather broad straight chalybeous streak immediately before the 

 middle, which terminates on the disc between the lower extremities 

 of the first and second costal streaks; this is followed by a con- 

 spicuous black patch at the tornus, margined by a shorter chaly- 

 beous streak at its commencement, and containing two conspicuous 

 shining metallic spots, with some golden metallic scales along the 

 margin ; above this patch is a series of five radiating golden ochreous 

 lines following the nervules, but not extending to the termen; 

 termen indented below the apex, the apex itself being somewhat 

 depressed ; cilia shining metallic about the tornus (but too much worn 

 above it to admit of description). Exp. al., 12 mm. Hindwitty* 

 purplish fuscous, with cilia the same colour but inclining to greyish 

 about the abdominal angle. Underside with the cilia distinctly 

 spotted with white along the outer margin. Abdomen leaden grey. 

 Underside white, anal segments fuscous. Legs greyish fuscous, 

 nnnulated with white on the tarsal joints, spurs inclining to 

 ochreous. 



Hob. Sierra Leone 1 . 2 . French Congo Kangwe, 

 Ogowe River (Rev. A. C. Good). 



Allied to Glypliipteryx grapholithoides, Wlsm., from 

 Natal. These species belong to the group to which 

 Walker gave the generic name Ussara, when describing 

 decoratella from the Amazons. I am unable to discover 

 any structural character by which it can. be separated from 

 Glypliipteryx. [When the above description was written 

 I had not recognised the species, but as it supplements 

 Walker's in several particulars I am not willing to sup- 

 press it.] 



IDIOTHAUMA, gen. n. 

 (IfStos = distinct, 0afy = a wonder.) 

 TYPE. Idiothauma africanum, Wlsm. 



Antennce, bifasciculate (at least 2), without pecten. Labial 

 palpi recurved, appressed to face ; apical joint blunt, shorter 

 than second. Maxillary palpi absent. Hamtellum short. Ocelli 

 present. Head and thorax smooth. Foreivings somewhat triangu- 

 lar, narrow at the base, widened outwardly, costa straight or 

 siightly depressed towards apex, dorsum straight, termen oblique, 



TRANS. ENT. SOC.LOND. 1897. PARTI. (APRIL.) 4 



