South American Micro-Lepidoptera. 251 



ous. Forewings lanceolate, apex slenderly produced ; ferruginous- 

 orange ; a broad snow-white longitudinal streak from base to apex, 

 reaching nearly to costa throughout, lower margin twice sinuate and 

 edged with scattered black scales ; a short oblique white wedgeshaped 

 strigula from dorsum before middle, edged above with some black 

 scales : cilia pale ochreous, near base with a row of black specks, at 



apex with a ferruginous-orange projection. Hindwings grey; cilia 

 light grey. 



British Guiana, Bartica, in February (Parish)- one 

 specimen. ' 



Philomone rivifera, n. sp. 

 <S ?. 6-7 mm. Head whitish, frontal tuft ochreous-yellow. An- 

 tennae whitish-yellowish, eyecaps whitish. Thorax ochreous-yellow, 

 posterior extremity whitish. Abdomen greyish. Forewings lance- 

 olate, apex slenderly produced; ferruginous-orange; a moderate 

 silvery-white longitudinal streak, edged beneath with scattered black 

 scales, from base above middle to termen above tornus, its posterior 

 half curved upwards ; a slender white streak edged posteriorly with 

 some black scales obliquely outwards from before middle of dorsum 

 to middle of this streak ; very oblique wedgeshaped marks of blackish 

 irroration on costa before middle and towards apex : cilia whitish- 

 ochreous, with a ferruginous-orange projection at apex, two short 

 oblique blackish hooks below apex, and several lines of blackish 

 specks in terminal cilia and one or two in costal. Hindwings pale 

 grey ; cilia pale whitish-ochreous. 



British Guiana, Bartica, from December to February 

 (Parish) ; eight specimens. 



Opogona praestans, Wals. 



British Guiana, Bartica and Mallali (Parish), common. 

 The genus Dendroneura, Wals., founded on this species, is 

 merely a synonym of Opogona. 



Opogona lotoxantha, n. sp. 

 ?. 8 mm. Head and thorax deep ochreous-yellow. Palpi, an- 

 tennae, and abdomen lighter ochreous-yellowish. Forewings broad- 

 lanceolate, apex slenderly caudate; deep ochreous-yellow: cilia 

 lighter ochreous-yellowish. Hindwings light grey, tinged with 

 yellowish towards apex; cilia whitish-ochreous. 



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

 specimen. Allied to preceding. 



