LANGSDORFIA. By H. G. Dyar f. 1283 
base, containing a silvery spot; dark submarginal spots at the ends of the veins. Hindwing dark. Brazil; Para¬ 
guay and Argentina. 
L. minima Dgn. (184 f). Forewing grey mixed with brown; the subbasal spot shows angular projections minima. 
and instead of the silvery spot a spot of the ground-colour; small costal-marginal spots, a submarginal line 
and interrupted reticular markings are dark brown; discal shadow reddish brown. Hindwing dark. A very 
small species; the 3 shows in spite of a costal-marginal projection on the hindwing also a slender frenulum and 
a corresponding costal-marginal reverted fold. Ecuador. 
L. garasia Dgn. (184 f). Brown, the spots dark brown; a large lobate, submedianly thickened spot is garasia. 
at the base, bordered with silver outside, and 3 large roundish-angular spots bordered with silver are in the 
distal area; rather large spots at the costal and distal margin, the latter ones extending to the fringe. Structure 
of frenulum as in minima. Veins 6 and 7 of hindwing either separated, arising together or even stalked. From 
Argentina. 
L. argyrotoxa sp. n. (184 f). Dull wood-brown, with a large lobate dark brown subbasal spot bordered argyroloxa. 
with silver outside, submedianly forming a larger inward lobe; a median band thickened at the inner and costal 
margins, narrowed or interrupted in the middle; a fine subterminal line is thickened at the anal angle, without 
a silver border; a blackish shadow behind the cell between the veins; hindwing blackish. Structure of frenulum 
as in minima. Expanse of wings: 25 mm. Peru (Lima); the type in the FT. S. National Museum. 
L. bellaria Dgn. (184 f) is hyaline without scales in the distal area of the forewing and on the whole bellaria. 
hindwing, but the fringes of both wings are intact; the ground is almost white with 5 large dark brown spots 
and many small spots and striae. Structure of wings typically Langsdorfia- like, without a frenulum. Only the 
3 type known from Colombia. 
L. brunneomaculata sp. n. (184 f). Forewing light wood-brown with large round red-brown spots bord- brunneoma- 
ered with white; a large bent subbasal spot, a round one at the cell-end extending to the costal margin; a sub¬ 
marginal row of 3 spots, the lowest small and produced to the anal angle. Hindwing whitish with a double 
dark marginal line. Of a typical Langsdorfia structure, without a frenulum. Expanse of wings: 36—45 mm. 
The species is very much like L. marmorata Maassen which I do not know in nature, but it shows single differ¬ 
ences. Peru (Lima); type in the U. S. National Museum. 
L. ambigua Hbn. (= tigrina Bsd.) (184 g). Light tan-coloured, marbled with light brown spots bordered ambigua. 
with whitish; hindwing whitish with light brown marginal spots and apically with a submarginal row. Of a 
typical Langsdorfia structure. Argentina and Uruguay. 
L. chidin Dgn. (184 g) resembles ambigua, but the dark brown spots are narrow and prolonged with chiclin. 
white edges; these spots form a series near the margin, a larger one is below the cell, narrowed at the end and 
bent downward. Structure typical. Peru. 
L. demissa Maassen T do not know in nature, but the figure is so much like a dark aquila, that I believe demissa. 
to be right in ranging it here; separated by blackish hindwings. Ecuador. 
L. aquila Dgn. (182 i). Forewing reddish brown, brighter at the costal and inner margins, the veins aquila. 
rather broadly white. Hindwing light whitish or tinged with brown. Of the typical Langsdorfia structure, 
but owing to the broad obtuse wings and the strongly bipectinated antennae it looks like a Lasiocampida. Co¬ 
lombia and Bolivia. 
L. basiplaga Schs. (184 g). Forewing long triangular, grey, coarsely striated, with a large triangular basiplaga. 
brown basal spot and discal spot. Hindwing with a long slender frenulum which penetrates into a projection 
of the base of vein 12 of the forewing. Forewing with a tiny areole arising from vein 10, the veins 7 + 9 stalked 
from the end of the discal cell; described as Ravigia to which it cannot belong, because the discal veins of both 
wings are stalked. British Guiana. 
L. macrochir Schs. (184 g). Forewing light tan-coloured covered with roundish brown spots, partly macrocMr. 
darker, partly lighter; a larger one ist subterminal on vein 4, and one subapical. Hindwing similar, but less 
distinctly spotted. Structure normal. Brazil (Rio de Janeiro). 
L. caestroides H.-Schdff. (184 g). Ground-colour light yellowish straw-coloured, dark at the margin; caestrcidcs. 
a large oblique dark brown subbasal spot extends from the costal margin to vein 1; behind the cell above the 
discal veins as far as near the anal angle there is a large dark area composed of red-brown, blackish brown and 
violettish grey small quadrangular spots. Only 1 $ before me. Brazil (Rio de Janeiro). 
L. centrosoma Dyar (182 i). Dark grey, reticulated black; a narrow black line in the antemedian area centrosoma. 
and accumulated black and violettish grey scales behind the cell-end. 3 antennae biserrate and tuftedly ciliated. 
Hindwing with a moderately slender frenulum penetrating into a convexity at the base of vein 12 of the 
forewing; veins 6 and 7 of hindwing well separated, no bar connecting 7 and 8. Mexico. 
