Ileterocera from Costa Rica. 281 



Chadisra proilauta, sp. ii. 



$ . Palpi in front white irrorated with brown, dark brown 

 behind. Head, collar, and thorax brown ; patagia grey. 

 Abdomen brown above, the basal segment whitish grey. 

 Fore wings : basal third of costal margin and cell whitish 

 irrorated with brown ; below cell more narrowly similar, 

 limited by an inwardly oblique fuscous shade from cell, and 

 with a brown streak below median ; a wavy black medial 

 line divided in cell by a light brown shade and followed by 

 a dark grey shade at end of cell ; the medial space brown ; a 

 postmedial lunular black line inset on vein 3, irregularly 

 edged with white and followed by a brown space, leaving- 

 the terminal area above vein 3 white thinly irrorated witii 

 brown ; subterminal black spots between veins 6 and 8, and 

 smaller spots between 2 and 4 ; a marginal irregular brown 

 line, beyond which the irrorations are thicker. Hind wings ; 

 basal half whitish irrorated with brown ; outer half fuscous, 

 narrowing at anal angle ; cilia white. 



Expanse 35 mm. 



Hah. Tuis. 



Rifargia dissepta, sp, n. 



S . Head brownish mottled with grey. Tegulae brown, 

 tipped with grey behind, and with two lines of grey scales in 

 front. Thorax and abdomen grey irrorated with brown 

 except on four basal segments of abdomen, Fore wings and 

 cilia whitish thickly irrorated with light brown ; a brownish 

 basal shade on costa, preceded by an oblique white spot and 

 some darker brown scales in and below cell ; two fine black 

 lines on either side of discocellular, the inner one angled 

 anteriorly, the branch extending towards base, the outer one 

 angled at middle of discocellular, the branches extending 

 outwardly ; a fine brownish medial shade and fine postmedial 

 lunular line around end of cell ; a subterminal whitish den- 

 tate shade witli fuscous streaks between veins 4-8 and a 

 small fuscous spot above and below vein 2; a marginal dark 

 line straight from costa to vein 4, then lunular. Hind wings 

 white at base, the veins and some hairs brownish ; the outer 

 margin broadly black ; cilia white. 



Expanse 45 mm. 



? . Fore wings : no basal dark markings ; traces of an 

 antemedial lunular line ; no black lines at discocellular, the 

 medial area from cell to inner margin tinged with fuscous 

 brown, and a similar shade at end of cell. 



Expanse 47 mm. 



Hab. Avangarez. 



Possibly only an extreme form of R. distinguenda, Wlk, 



