Original descriptions of the American Cossidae. 
1285 
I. triarctata Schs. is similar to acrifera, but the light lilac ground predominates; the band in the basal (riantata. 
area coherent, dusted, the anal arcuate streak also coherent, confluent with reticular markings. Only the $ 
type is known. French Guiana. 
I. roseobrunnea Dgn. (169 h). Forewing rosy grey, the basal area almost as far as the middle reddish roseobrun- 
brown, bordered by a black oblique line which extends from the interior third of the inner margin to the middle 
of the costal margin; forewing with scanty spotted reticulations; a thick black streak across the anal angle 
encloses a blackish area and bends up to the costal margin by 3 or 4 small punctiform spots. Hindwing blackish, 
striated darker. Only the $ type (without its abdomen) is known. French Guiana. 
I. polybloides Schs. Ground-colour of wings whitish, brown costal-marginal and inner-marginal shadows polybioides. 
are connected in the middle by a band; reticular markings form a tridentate bow above the anal angle, a thick 
irregular spot is at the apex. Only 1 $ type from Brazil is known. 
1. itzalana St.kr. (169 h) resembles no other species; large, forewing grey, strewn with black atoms; the Uzalana. 
veins striped black with single interruptions; black striae at the base of the inner margin and before the apex. 
Hindwing lighter grey, similarly strewn. Arizona. 
I. polybia Schs. (- inguromorpha Schs., crassiplaga Schs.) (182 i) resembles basalis, the light ground is polybia. 
intermixed with whitish spots, reticulated black, with a fine interior oblique line and a bow above the anal 
angle, a bent black spot at the apex, slender or also thicker. Hindwing without a bar connecting 7 and 8. 
Guatemala; Panama; Colombia; Venezuela; Guiana; Brazil. 
I. ramulosa Dgn. has blackish grey wings marked as in polybia, but without white spots and with finer ramulosa. 
reticular markings; the apical spot is not more prominent than the other reticular markings. Argentina. 
I. entone sp. n. (169 h). Thorax and forewing yellowish grey; abdomen light at the base, with a black entonc. 
band behind it, laterally shaded dark. Forewing with a black interior band which is widened at the costal and 
inner margins and united with a bent band above the inner margin extending to the cell-end; distal half with 
spotted reticulations, in the only type with hardly any scales caused by flying, though one wing exhibits yet 
a round black spot before the apex. Hindwing grey, densely reticulated black. Expanse of wings: 39 mm. 
Panama, La Chorrera; type in the U. S. National Museum. 
Aphabetical List 
of the original descriptions of the American forms of Cossidae. 
* signifies that the form is also figured at the place quoted. 
abnoba Coss. Schs. Journ. N. Y. Ent. Soc. 9, p. 47, 1901. 
actileuca Giv. Dyar Proc. U. S. Mus. 54, p. 367, 1918. 
acutipennis Coss. Schs. Proc. U. S. Mus. 29, p. 340, 1905. 
adolescens Mi. Dyar Proc. U. S. Mus. 47, p. 349, 1914. 
adornata L. Dgn. Le Nat. XI, p. 211, 1889. 
albescens P. Dgn. Het. nouv. Am. Sud 19, p. 3, 1921. 
albicosta Giv. Schs. A. M. N. H. (8) 7, p. 632, 1911. 
albimacula Coss. Dgn. Het. nouv. Am. Sud 21, p. 30, 1923. 
albistriga Het. B. & McD, Contr. Nat. Hist. IV, p. 179, 1918. 
albogrisea X. Dgn. Het. nouv. Am. Sud 12, p. 23, 1916. 
alfarae Coss. Schs. A. M. N. H. (8) 7, p. 629, 1911. 
amanosa Giv. Schs. A. M. N. H. (8) 7, p. 629, 1911. 
amarosa Tr. Dyar Proc. U. ST Mus. 38, p. 271, 1910. 
ambigua L. Hbn. Zutr. exot. Schmett. I, p. 25, 1818. 
angrezi Ac. Bailey Papilio II, p. 93, 1882. 
aquila L. Dgn. Het. nouv. Am. Sud 10, p. 3, 1916. 
arbeloides Giv. Dyar Ent. News X, p. 129, 1899. 
arcifera Ing. Dyar Sci. Bull. Brookl. Inst. p. 81, 1906. 
ardosiata Coss. Dgn. Het. nouv. Am. Sud 12, p. 29, 1916. 
argenteolaminata Giv. Dgn. Het. nouv. Am. Sud 12, p. 24,1916. 
argygrotoxa L. Dyar Seitz Macrolep. VI, p. 1283. 
aroa Giv. Schs. P. Z. S. Bond. 1894, p. 235, 1894. 
arpi Coss. Schs. Journ. N. Y. Ent. Soc. 9, p. 47, 1901. 
arpiodes Coss. Dgn. Het. nouv. Am. Sud 23, p. 31, 1923. 
atra X. B. & McD. Ent. News 21, p. 465, 1910. 
ban Pus. Dyar. Seitz, Macrolep. VI, p. 1285. 
basalis Ing. Wkr. Cat. Lep. B. M. 7, p. 1523, 1856. 
basiplaga L. Schs. Proc. U. S. Mus. 29, p. 342, 1905. 
beatrix L. Schs. Proc. U. S. Mus. 49, p. 393, 1921. 
bellaria L. Dgn. Het. nouv. Am. Sud 3, p. 58, 1911. 
benestriata X. Hmps. A. M. N. H. (7) 14, p. 180, 1904. 
bertholdi Hyp. Grt. Bull. Brookl. Inst. 3, p. 45, 1880. 
binubila Giv. Dgn. Het. nouv. Am. Sud 12, p. 25, 1916. 
bistellata Coss. Dgn. Het. norxv. Am. Sud 1, p. 38, 1910. 
brunneomaculata L. Dyar Seitz, Macrolep. VI, p. 1283. 
caestroides L. H.-Schdff. Samml. AuBereurop. Schmett. f. 41, 
1853. 
carisca Giv. Schs. Journ. N. Y. Ent. Soc. IX, p. 74, 1901. 
carla Giv. Dyar J. .1. Menstr. 11, p. 30, 1923. 
centerensis Ac. Lint. Can. Ent. 9, p. 129, 1877. 
centrosoma Coss. Dyar Seitz, Macrolep. VI, p. 1273. 
centrosoma L. Dyar J. J. Menstr. 13, p. 19, 1925. 
chiclin L. Dgn. Ann. Soc. Ent. Belg. 49, p. 149, 1905. 
cinerea Giv. Schs. A. M. N. H. (8) 7, p. 632, 1911. 
circumpunctata Giv. Dgn. Het. nouv. Am. Sud 12, p. 26, 1916. 
clathrata Giv. Dgn. Het. nouv. Am. Sud 1, p. 37, 1910. 
Cleopatra Giv. B. & McD. Ent. News 23, p. 55, 1912, 
eleptes Coss. Dyar Zoologica 1, p. 138, 1910. 
coerulescens Coss. Schs. A. M. N. II. (8) 7, p. 633, 1911. 
cognata X. Wkr., List. Lep. B. M. 7, p. 1532, 1856. 
comisteon X. Schs., A. M. N. H. (8) 7, p. 628, 1911. 
connecta Hyp. B. & McD. Contr. Nat. Hist. 3, p. 34, 1916.* 
coresa L. Schs. Journ. N. Y. Ent. Soc. 9, p. 75, 1901. 
corregis Coss. Dyar Seitz Macrolep. VI, p. 1274. 
