no. 3620 MICROLEPIDOPTERA, XV — DUCKWORTH 7 



brown scaling basally, apical segment dark brown. Legs as for 

 T. directrix. Thorax light brown. Abdomen yellow dorsally, base of 

 segments 2-4 irregularly gray; white ventrally. Forewing narrower 

 apically than for T. directrix, apex rectangular; light brown irregularly 

 shaded with darker scaling, maculation as for T. directrix except sub- 

 terminal and terminal transverse lines solid, irregular black shading 

 at apex. Cilia light brown. Hindwings dark brown to black. Cilia 

 light brown with a dark brown median shade. 



Male genitalia : Unknown. 



Female genitalia (slide WDD 3325, type) : Lamella antevaginalis 

 broadly notched on posterior margin; lamella postvaginalis with deep 

 median groove. 



Type : In the Naturhistorisches Museum, Vienna, Austria. 



Type-locality: Petropolis, Brazil. 



Distribution: Brazil: Petropolis (March); Sao Paulo (March). 



This species is separated readily from all others in the genus on the 

 basis of wing shape and maculation. The subterminal line on the 

 forewing is solid, and the apex is much more rectangular than in the 

 other species. Since the females of the other species are not known, 

 it is impossible to compare the characters found in the genitalia. 



Thioscelis fuscata, new species 



Figures 11, 12; Plate 1 (Fig. 5); Map 1 



Alar expanse 46 mm. 



Antenna light brown basally, dark brown beyond. Head, legs as 

 for T. directrix. Thorax dark brown dorsally, tegula lighter. Ab- 

 domen as for T. directrix. Forewing dark brown, lighter on costa 

 basally, median third with ill-defined black spotting; subterminal 

 transverse line a faint series of black dots; terminal line barely dis- 

 tinguishable. Cilia dark brown, somewhat lighter basally. Hind- 

 wing dark brown to black. Cilia as for forewing. 



Male genitalia (slide WDD 3566, type): Uncus short, recurved, 

 enlarged at apex; apex of gnathos slender at apex, acute; harpe with 

 apex much longer than ampulla; ampulla small, slender, digitate. 



Female genitalia: Unknown. 



Type: In the British Museum (Natural History). 



Type-locality: La Oroya, Rio Inambari, Junin, 3100 ft., Peru. 



Distribution: Known only from the type-locality. 



Described from the male holotype (G. Ockenden), La Oroya, R. 

 Inambari, Peru, September 1904, 3100 ft., dry seas. 



The small, slender, digitate ampulla in the male genitalia readily 

 distinguishes this species from all others in the genus. 



The dark brown fore- and hindwings is the most distinctive super- 

 ficial character. 



