South American Micro-Lepidoptera. 219 



whitish irroration, obsolete on costa, posterior one often making 

 a whitish spot on dorsum; a longitudinal streak of violet-blue- 

 metallic irroration extending above discal spot from before middle 

 to terminal band; a moderate black terminal band, in middle 

 occupying less than J of wing, anterior edge acutely indented 

 opposite apex of wing, edged on upper half by a whitish irregular 

 line from f of costa, and enclosing a violet-golden -metallic prae- 

 marginal toothed line tending to be broken into spots and always 

 strongly interrupted beneath apex : cilia light fuscous, with dark 

 fuscous subbasal line, without white patches. Hindwings dark 

 fuscous ; a whitish-fuscous oblique-oval spot in disc before middle ; 

 an inwardly-oblique white mark from costa at f ; a short indistinct 

 obliquely curved whitish mark from tornus; a white transverse 

 streak towards termen in middle, its lower end touching termen; 

 a golden-violet-metallic streak across apex; cilia dark fuscous, 

 with obscure oblique grey-whitish apical, median, and tomal 

 patches. 



British Guiana, Bartica and Mallali, from January to 

 April (Parish) ; Peru, Pacaya, in July {Mounsey) ; twenty 

 specimens. Easily known from pavonacella by the absence 

 of white patch in apical cilia of forewings. 



Brenthia stenorma, n. sp. 



^. 13 mm. Head rather dark fuscous, orbits white except above. 

 Palpi white, with subapical ring of second joint, and base and an 

 anterior streak of terminal joint dark fuscous, with short rough 

 tuft of dark fuscous scales from basal joint beneath. Antennal 

 ciliations 1|. Thorax dark fuscous (injured). Forewings elongate- 

 triangular, costa gently arched, apex rounded, termen slightly 

 rounded, hardly oblique; dark fuscous; base and an irregular 

 curved fascia at J lighter, slightly whitish -sprinkled ; a transverse - 

 oval spot of ground colour outlined with white in disc beyond 

 middle, preceded by a darker fuscous spot and followed by two 

 small ones, and also preceded and followed by very undefined 

 fasciae of whitish irroration obsolete towards costa, posterior more 

 whitish-suffused towards dorsum ; some pale blue-metallic irroration 

 on both these fasciae beneath costa, and a streak of pale blue- 

 metallic irroration from top of discal spot to terminal band; a 

 narrow black terminal band, only occupying ^ of wing in middle, 

 anterior edge irregular, acutely indented opposite apex and in 

 middle, preceded on upper half by an irregular whitish line from 

 f of costa sending projections into indentations, and enclosing a 

 golden-violet-metallic praemarginal line with narrow wedgeshaped 



