450 PROCEEDINGS OF THE NATIONAL MUSEUM vol.xxiv. 
line; some lilacine scales below cell toward base; a lighter brown space 
near inner margin from base to anal angle. 
Ex-panse. — Male, 20 millimeters; female. 2-i millimeters. 
Ilahitat. — Castro, Parana, Brazil. 
Ti/2Je.—^o. 6040, U.S.N.M. 
MEGISTIAS POLISTION, new species. 
Diagnosis. — Wings dark brown; fringe buff. Primaries, a semi- 
hyaline whitish spot between veins 2 and 3, and smaller ones between 
3 and 4; some olivaceous scales on base of costa; a cluster of j^elloAvish 
scales above middle of submedian vein; minute clusters of similar 
scales obliquely from costa before apex. Underneath, light olivaceous 
brown. Primaries, a black shade from base to hyaline spots; an outer 
row of small yellowish buff spots; a similar spot in the cell, 
Exjxinse. — Twenty-seven millimeters. 
Habitat. — Petropolis, Brazil. 
Tyjye.—^o. 6041, U.S.N.M. 
MEGISTIAS MONESTES, new species. 
Diagnosis. — Wings dark brown; fringe pale. Primaries, a very 
indistinct outer row of gra3'ish brown spots. Underneath, dull gray, 
with blackish brown markings. Primaries, basal half entirely dark; 
elongated spots beyond cell between veins 4 and 6; elongated marginal 
spots between 2 and 4; apical spots above vein 6; a terminal blackish 
line. Secondaries, a median dark shade cut by veins, and darkest 
above cell; an outer row of dark spots close to cell, from below vein 2 
to vein 7, followed by a lighter brown shade; the outer margin brown, 
leaving subterminal grayish spots; a terminal black line; the inner 
margin without markings. 
Exjxmse. — Twenty-eight millimeters. 
JIahitat. — Nova Friburgo, Brazil. 
Ti/pe.—^o. 6042, U.S.N.M. 
MEGISTIAS MIABA, new species. 
Diagnosis. — Wings dark brown; fringe grayish. Primaries, a 
minute whitish spot between 2 and 3, 3 and 4, and 6 and 7. Under- 
neath, primaries with cell and inner margin blackish; costa, apex, and 
outer margin light brown, the veins yellowish; spots as above; a pale 
dash below vein 2. Secondaries light brown; the veins yellowish; a 
whitish point at end of cell; a row of outer white points from veins 
2 to 7. 
Exjxmse. — Twenty-nine millimeters. 
Ilahitat. — Not known. 
Type.— ISO. 6043, U.S.N.M. 
