336 
EXOTIC MICROLEPIDOPTERA. 
towards apex and upper part of termen; cilia pale grey, a darker 
subbasal shade. 
Colombia, Mt. Tolima, 10,500-12,500 feet, October, December; 
2 ex. 
Eucosma eridarcha, n. sp. 
cf. 20-21 mm., 2 29 mm. Head, palpi, thorax fuscous, 2 
partially suffused whitish-ochreous and brownish. Forewings 
elongate, somewhat dilated, costa without fold, termen somewhat 
oblique, <5 sinuate-indented in middle, $ slightly sinuate; light 
greyish-ochreous, somewhat sprinkled grey; costa with dark 
fuscous striguhe and small spots between pairs of pale strigulae ; 
basal patch dark fuscous on dorsal half, edge indented, in $ only 
slightly, followed by an ochreous-whitish median dorsal blotch 
somewhat mixed dark grey centrally, in pentagonal, in 2 sub- 
triangular, margined above by a broad band of dark fuscous 
suffusion connected with basal patch, its angle in § touching 
costa, and posteriorly by fuscous suffusion mixed iu with dark 
fuscous and in § with dull greenish, extending to ocellus, in J a 
whitish streak passing from middle of median dorsal blotch to top 
of ocellus; ocellus formed by two thick silvery streaks enclosing 
in <3 a whitish space speckled fuscous with two minute blackish 
dots, in 2 a pale greyish-ochreous space with three blackish 
linear marks, above it in cf a rather dark fuscous streak, in $ 
a dark fuscous suffused blotch containing a dull greenish spot, 
beyond this some silvery transverse marking from a prasapical 
pair of white strigulae preceding a small dark fuscous apical spot: 
cilia grey with rows of white points. Hindwings 3 and 4 stalked; 
pale grey-, darker and mottled grey towards margins, 3 whitish- 
tinged in disc; cilia whitish-grey, a grey subbasal line. 
Colombia, Mt. Tolima, 12,500 feet, December ; 3 ex. Between 
chloroticana and tridentata ; although the sexes differ much in detail 
(probably variable), they are generally similar, and I have no doubt 
correctly united. 
Eucosma bactropa, n. sp. 
3 . 22 mm. Head, palpi light ferruginous-brown. Thorax 
ferruginous-brown, dorsally sprinkled grey-whitish. Fore wings 
somewhat dilated, termen straight, nearly vertical, costa without 
fold; ferruginous-brown, dorsal third sprinkled grey, some white 
scales round ocellar region ; five pairs of white transverse strigulae 
on costa from to -t, and some white and grey irroration on costal 
third beneath these ; an oblique white mark on end of cell; a spot 
of brighter ferruginous-orange suffusion on upper half of termen : 
cilia violet-brown, on upper half of termen ferruginous-orange. 
Hindwings 3 and 4 stalked ; rather dark grey, apical edge tinged 
dark crimson, at extreme apex yellowish; cilia light grey, a darker 
basal shade, tinged round apex crimson and at apex yellowish. 
Colombia, Alto de las Ances, 7250 feet, March : 1 ex. 
Eucosma diogma, n. sp. 
3.22 mm. Head whitish-ochreous. Palpi, thorax pale ochreous 
sprinkled fuscous. Forewings elongate, costa without fold, termen 
