Publ. 22. VI. 1937. 
HETEROCOMA. By H. G. Dyar f. 
1273 
C. discopuncta Schs. (183 a). Dingy silvery whitish, 3 brown spots in an oblique row in the centre of discopuncta. 
the wing, the discal one large, the others small; faint grey speckles are condensed at the distal margin and anal 
angle, forming a border and a streak above the anal angle. Hindwing white. Forewing with veins 7 to 11 from 
the areole, 7 and 8 nearing each other at the base, 9 and 10 together. $ unknown. Brazil (Sao Paulo). 
C. rille sp. n. (183 b). Like discopuncta, but the spots are smaller, the middle one extinct; anal angle rillc. 
and margin as far as the apex with a broad area of grey striation. Neuration as in discopuncta, but 7 and 8 
more separated. Brazil (Rio de Janeiro and Novo Friburgo); type in the U. S. National Museum. 
C. ryssa sp. n. (183 b). Forewing whitish grey, with brown transverse striae which are more densely ryssa. 
arranged in the exterior half of the wing; a narrow brown shadow along the costal margin and broadly across 
the anal angle almost to the base, 3 round brownish black spots in the middle, the discal one the largest. Fore¬ 
wing with veins 7 - 11 from the areole, all free, 9—10 nearing each other or together. Bolivia (Rio Songo); 
Carabaya (Peru); type in the U. S. National Museum. 
C. maruga Schs. (181 g). Like ryssa, but the stripes in the distal half of the wing much more intense, maruga. 
the violettish grey bands intermixed with orange brown, producing an iridescent impression; the 3 discal dots 
doubled by smaller ones outside. Veins 7 —11 of forewing arise freely from the areole. 9 not known. Brazil 
(Castro, Novo Friburgo, Joinville, Sao Paulo); Dutch Guiana (Geldersland). 
C. centroscma sp. n. (183 b). Forewing broader and more quadrangular than in maruga-, yellowish ccntrosoma 
white, forewing feebly tinged with brown, densely striated dark brown, connected by brown shading in the 
centre of the distal half, a large irregularly rounded velvety black discal spot before it. Veins 7- 11 of forewing 
from the areole. free, 9 and 10 also separated. Hindwing without markings. From Colombia (Buena Vista); 
type in the U. S. National Museum. 
C. julius Schs. (181 h). Dingy white, apex of forewing very pointed, longitudinally shaded with brown, julius. 
hardly reticulated or striated; darker shaded along the inner and outer margins, inside of it a parallel shadow 
to the apex and a short stripe above it, bordering on a double white stripe to the apex; the disc with a large 
irregularly round dark brown spot, double and tinged with black downward. Forewing with veins 7—10 from 
the areole, 9 and 10 connected. Only the <$ type is known. Brazil, Novo Friburgo. 
C. acutipennis Schs. (183 b). Smaller and with less pointed wings than julius. The distal half of the acuiipennis. 
wing is filled with olive shading and spots, traversed by the double white apical stripe, the discal spot smaller 
and extinct, more olive brown, with a doubling below it and a third spot at the inner margin. The $ is larger, 
the hindwing tinged with black, forewing scarcely pointed, the white apical stripe present, but more bent. 
Forewing dingy white, feebly speckled; distal and inner margins above the anal angle crossed by brown and 
reddish shadowy bands; the discal spot round, very large, velvety dark brown. Forewing with veins 7—11 from 
the areole, 9 and 10 more or less distinctly connected. French Guiana and Bolivia (Rio Songo). 
C. cor-regis sp. n. (183 b). Thorax yellowish brown in front, white behind. Forewing dingy white, cor-rcgis. 
tinged with dark yellow in the cell, the lower half of the inner margin, and especially below the apex; a white 
stripe extends through the centre of the wing to the apex; anal area intensely speckled purple brown, filled 
with white in the.middle; the small irregular discal spot is situate in dark clouds; a small dark spot near the 
inner margin inwardly. Veins 7—11 from the areole, 9 and 10 connected. Hindwing dingy white. Brazil (Novo 
Friburgo); type in the U. S. National Museum. 
C. vinnea Schs. (183 b). White, with interrupted brown and black reticular markings forming an oblique vinnea. 
shadow above the anal angle; discal spot large, brown, with a small doubling below it. The $ is darker, with 
grey hindwings, the distal third more intensely smoky. Forewing with veins 7 11 from the areole, all separated, 
or 9 and 10 connected. Guatemala. 
9. Genus: Heterocoma B.d-McD. 
Forewing with veins 1 and lb separated, the discal vein forked, 7—10 from the areole which is only 
small, 11 from the discal cell near the base. Discal vein of hindwing forked, 6 and 7 well stalked as in Cossus, 
8 free. Only 1 species: 
H. albistriga B. d- McD. (181 h) is not at hand, according to the figure it is of a stout structure, with albislriga. 
rather obtuse wings; the ground-colour is grey, a white stripe along the costal margin, another stripe along 
the submedian vein as far as half the length of the wing, finally a short one from the cell-end obliquely to the 
VJ 160 
