226 Mr. E. Meyrick's Descriptions of 



edged spot on dorsum before tomus, reaching half across wing; 

 a violet-golden-metallic blotch occupying apical fourth of wing : 

 cilia grey. Hindwings and cilia grey. 



British Guiana, Bartica and Mallali, from December to 

 March {Parish) ; twenty-four specimens. 



Acrocercops melanactis, n. sp. 



(^. 8 mm. Head shining metallic-bronzy, face whitish-tin. ed. 

 Palpi very long and slender, yellow-whitish. Thorax golden- 

 bronzy-metallic. Abdomen dark grey. Forewings extremely 

 narrow, parallel -sided, rather short-pointed; orange; costal edge 

 black throughout; a brassy-yellow blotch extending on dorsum 

 from base to f, above toucliing costa at extremities, semiovally 

 excavated between these and strongly blackish-edged, posterior 

 margin oblique and blackish-edged; an elongate blackish mark 

 on costa before middle, containing an obscure silvery-whitish dot 

 anteriorly; a triangular brassy-yellow blackish-edged spot on 

 dorsum before tornus, dorsal edge blackish between this and basal 

 blotch; a bronzy-golden blotch suffused with greyish -purple 

 occupying apical fourth of %ving, more extended dorsally : cilia 

 dark grey. Hindwings and cilia dark grey. 



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

 specimen. 



Acrocercops trimetalla, n. sp. 



cj $. 8-9 mm. Head shining metallic-bronzy, face whitish-tinged. 

 Palpi very long and slender, ochreous-whitish. Thorax violet - 

 bronzy-orange. Abdomen grey, base and apex ochreous-tinged. 

 Forewings extremely narrow, parallel-sided, moderately pointed; 

 bright orange; a brassy-metallic blotch extending along dorsum 

 from near base to i, upper edge sinuate and marked with a few 

 blackish scales, anterior angle connected with costa by a silvery 

 dot edged posteriorly with black, posterior angle only reaching 

 half across wing ; an elongate silvery-metallic mark on costa before 

 middle, edged with a few blackish specks; a triangular brassy- 

 metallic spot on dorsum before tomus, reaching half across wing; 

 a narrow elongate golden-metallic patch extending along termen 

 to apex : cilia grey. Hindwings rather dark grey ; cilia grey. 



British Guiana, Bartica, in December and January 

 (Parish) ; two specimens. 



