South American Micro-Lepidoptera. 195 
scales, beyond this is a roundish patch somewhat lighter than 
groundcolour: cilia brownish. Hindwings and cilia fuscous. 
PARAGUAY; one specimen. 
Acrolophus tetrancyla, n. sp. 
g: 24-26 mm. Head, palpi, and thorax fuscous; palpi ex- 
tremely long, recurved, clothed with dense somewhat rough scales 
throughout. Antennae strongly dentate, dentations well separated. 
Abdomen fuscous, uncus curved, branches remote at base but 
appressed at tips, claspers very long and slender, pointed, strongly 
curved downwards, thus each forming a long hook and resembling 
a larger uncus. Posterior tarsi not rough-scaled. Forewings 
moderately elongate, posteriorly dilated, costa gently arched, apex 
rounded, termen rounded, rather oblique; all veins separate; 
fuscous, obscurely strigulated with darker, on costa more distinctly ; 
a small blackish spot or mark towards dorsum at 4; a triangular 
dark fuscous submedian patch before middle, suffused above but 
well-defined and angular beneath; an indistinct darker spot in disc 
at %: cilia fuscous. Hindwings and cilia fuscous. 
Peru, Chanchamayo; three specimens. 
Acrolophus seminigera, n. sp. 
g. 18-21 mm., 9. 26-30 mm. Head, palpi, and thorax varying 
from greyish-ochreous to rather dark fuscous; palpi in g extremely 
long, more or less strongly recurved, not quite reaching to extremity 
of thorax, thickened with dense appressed scales, more or less 
roughly projecting on posterior surface of terminal joint, which 
varies somewhat in length. Antennae in ¢ flatly dentate. Abdo- 
men fuscous, in g¢ with uncus curved, branches moderately and 
evenly remote throughout, claspers moderate, apex rounded. 
Posterior tarsiin g not rough-scaled. Forewings elongate, posteriorly 
dilated, more elongate in 2, costa gently arched, apex rounded, termen 
somewhat rounded, rather oblique, in 2 more oblique; all veins 
separate; varying from brownish to rather dark purplish-fuscous, 
strewn with indistinct darker strigulae, costa distinctly spotted or 
strigulated with dark fuscous; a dark fuscous crescentic submedian 
patch before middle, suffused above but convex and well-defined 
beneath ; an indistinct suffused darker spot in disc at 3, in J followed 
by several (2-6) variable minute whitish specks, in 2 these are 
hardly indicated: cilia fuscous. Hindwings and cilia fuscous. 
VENEZUELA, Ciudad Bolivar, from May to September; 
twelve specimens. 
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