South American Micro-Lepidoptera. 243 



Lyonetia zapyropis, n. sp. 



c^. 8 mm. Head, palpi, and thorax shining white. Antennae 

 grey, basal joint white. Abdomen whitish. Forewings narrow- 

 lanceolate; shining white; an oval deep orange blotch occupying 

 wing from middle to i, anteriorly edged with grey suffusion; apical 

 area beyond this grey, with a black praeapical spot bilobed pos- 

 teriorly : cilia grey, on costa with three short blackish bars, at 

 apex with two blackish projecting bars and a whitish ray between 

 them, on termen with some black scales at base. Hindwings and 

 cilia grey. 



British Guiana, Mallali, in March (Parish) ; one speci- 

 men. Appears to mimic Thiotricha argoxantha. 



Lyonetia acrodora, n. sp. 



cj. 7 mm. Head, palpi, and thorax shining white, face pale 

 greyish-ochreous. Antennae whitish. Abdomen grey, sides whitish. 

 Forewings narrow -lanceolate ; shining white ; two oblique light 

 ochreous-yellowish bars edged with dark fuscous from middle of costa 

 and beyond, running into a light ochreous-yellowish streak edged 

 posteriorly with dark fuscous crossing wing obliquely inwards from 

 costa at |; a deep orange blotch occupying apical fourth of wing, 

 anterior edge nearly straight, edged with dark fuscous ; a black apical 

 dot : cilia grey, at apex with three projecting blackish hooks. Hind- 

 wings and cilia dark grey. 



British Guiana, Bartica, in February {Parish) ; one 

 specimen. 



Lyonetia firmata, n. sp. 



cJ. 7'5 mm. Head, palpi, and thorax white. Abdomen whitish. 

 Forewings very narrow, parallel-sided, apex acute; shining white; 

 a slender oblique dark fuscous streak from costa at f and a shorter 

 one beyond it, both nearly or quite touching corresponding dark grey 

 dots on termen ; apex of wing pale ochreous-yellowish, with a black 

 apical dot : cilia grey, on costa white with three dark fuscous bars, at 

 apex with three diverging blackish bars, beneath apex with base light 

 ochreous-yellowish, limited by a short blackish line edged externally 

 with white. Hindwings and cilia dark grey. 



Peru, Lima, 500 feet, in August (Parish) ; one specimen. 



Lyonetia vallaris, n. sp. 



cj $. 5-6 mm. Head, palpi, antennae, thorax, and abdomen 

 shining whitish. Forewings narrow-lanceolate, acute; shining 



