South American Micro-Lepidoptera. 281 



ferruginous streak extended to dorsum, first discal usually marked 

 with an irregular, blackish -grey spot ; a series of blackish dots round 

 apex and termen : cilia reddish-ochreous. Hind-wings dark grey ; 

 cilia grey, darker towards base. 



British Guiana, Bartica and Mallali, from December to 

 March (Parish) ; five specimens. 



Dichomeris opsoclonia, n. sp. 



(^. 14 mm. Head grey. Palpi dark grey, second joint with 

 scales roughly triangularly expanded towards apex above and with 

 short tuft beneath, apical edge whitish, terminal joint whitish with 

 anterior edge and subapical band blackish. Thorax pale ochreous, 

 with dark grey dorsal stripe. Abdomen whitish-ochreous. Fore- 

 wings elongate, rather narrow, costa gently arched, apex obtuse, 

 termen slightly rounded, nearly vertical; pale ochreous -yellow, 

 whitish-tmged towards costa anteriorly; a narrow brownish streak 

 along dorsum from base to tornus, becoming dark brown towards 

 base; stigmata minute, rather dark fuscous, plical beneath first 

 discal ; posterior part of costa and termen somewhat sufl^used with 

 yellow-ochreous ; a marginal series of minute black specks roinid 

 apex and termen : cilia deep ochreous. Hind-wings ochreous- 

 whitish ; cilia whitish-ochreous. 



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

 specimen. 



Dichomeris zonostoma, n. sp. 



(^. 16 mm. Head whitish-ochreous, sides of crown brownish- 

 ochreous. Palpi whitish, second joint with scales triangularly 

 expanded towards apex above and short triangular apical tuft 

 beneath, with two brown bands, anterior edge of terminal joint 

 dark fuscous. Thorax whitish-ochreous, patagia brown. Abdomen 

 grey. Fore-wings elongate, rather narrow, costa gently arched, 

 somewhat sinuate towards middle, apex pointed, termen rounded, 

 rather oblique ; whitish-ochreous ; a broad irregular brown median 

 stripe from base to apex, and a narrower one along dorsum from 

 near base to middle of termen ; veins partially marked with sufl^used 

 dark fuscous lines on these streaks, and towards costa exteriorly; 

 a narrow suffused fuscous streak along costa from before middle to 

 t; plical and second discal stigmata blackish; a whitish line round 

 ])osterior part of costa and termen, marked with a series of black 

 marks or dots on apex and termen : cilia light brownish, darker 



