269 
NACOPA; ACOPA; LANGONA; PLATYPERIGEA. By Dr. M. Draudt. 
are connected by a U-shaped line, the reniform macula is larger, surrounded with dark, with single white dots 
which are frequently centred with blackish. Hindwing diaphanous white, at the margin smoky. Texas. 
alrostriga. A. atrostriga B. d • McD. (37 k). F orewing lighter purple grey, at the margin darkened with brownish, 
the transverse lines are only at the costal margin indicated as small black spots; by the black ring-macula 
being arrowhead-shaped and connected with the base by an interrupted line the species is easily discernible; 
the reniform macula is narrow, surrounded with black, the undulate line is ochre-yellow, proximad particularly 
behind the cell shaded with dark brown. Hindwing white, distally smoky brown. Utah. 
poliophaea. A. poliophaea Hmps. is the only really tropical species of this genus: forewing greyish-brown, in 
the marginal area excepting the apex copper-brown, in the costal-marginal part strewn with white, with quite 
indistinct transverse lines, the posterior line being finely dentate and with a bent blackish median line; no 
maculae; instead of the undulate line there are only 2 minute white spots below the costal margin. Hindwing 
blackish-brown. West Colombia. 
80. Genus: ISfacopa B. u. Ben]. 
The only species was described as Acopa, but differs from it in the stronger structure with a much shorter 
abdomen and a differently shaped frontal projection in which the part towards the vertex protrudes much 
more. Tibiae with very long hair. 
bisirigaiit. N. bistrigata B. d• McD. (37 k). Forewing light brown, in the basal area darker, with a broad white 
anterior transverse line, and a similar posterior line in which there is a thick white discal streak, with a large 
brown snbapical spot, behind it a white apical line Hindwing pinkish-brown. Arizona. 
81. Genus: Acopa Haw. 
Proboscis absent, the short palpi are straightly porrect, rough-haired, the frons exhibits a rounded 
projection which is upwards flattened. $ antennae serrate and ciliated; thorax clad with rough scales and 
loose tufts, the posterior tuft very large. Abdomen tuftless. Slenderly built species recalling diurnal Heliothidae. 
carhm. A. carina Haw. (37 k) is an extremely variable species looking very differently in both sexes. The 
white forewing is densely irrorated with blackish-brown, particularly in the median area which is edged with 
dentate transverse lines being on the averted sides bordered with white; the maculae are only marked by an 
indistinctly darker colour; the undulate line is a faded dark brown band. Hindwing greyish-brown. The $ 
is much lighter, white and yellowish-brown, otherwise similarly marked. Texas. 
perpnlUda. A. perpallida Grt. incana Edw., carina auct. nec Haw., borealis Dyar) (37 1) is so variable that 
there are hardly two specimens alike. Forewing white, in the lower part of the basal and median areas irrorated 
with brownish ochreous, with yellowish-brown notched transverse lines and an indistinct reniform macula, 
the other maculae being absent; the undulate line is a faded brown band. Hindwing white, at the margin feebly 
dentifer. brownish. -— The form dentifer Dyar (37 1) is a form with darker irroration, approximating carina, with a 
pura. more intense marking. — pura B. d- Linds., in contrast with it, are quite light, white specimens with black 
conspicuous transverse lines, the reniform macula being reduced to a black dot. Kansas, Colorado, Arizona. 
82. Genus: X^aiigona B. u. Linds. 
The most closely allied to the preceding genus from which it differs in the smooth frons without a 
projection, the thorax being almost only clad with scales except but very few interspersed hairs; the few speci¬ 
mens that were hitherto captured are too much damaged as to allow the assertion that the pro- and meta-thorax 
are tuft-less; the metathorax exhibits a large tuft of long spatnlate scales; abdomen tuftless. The $ antennae 
exhibit double ciliated pectinations. But one species. 
griscsntns. L. grisescens B. d- Linds. (37 1). Forewing grey strewn with black and white scales in the costal half 
and at the apex, with black transverse lines, the posterior line towards the hind-margin distally much lighter, 
above it is darkened by an oblique dark subapical shadow; maculae indicated by a very feebly lighter colour, 
the ring-macula surronnded with a darker colour; subterminal area dusty grey. Hindwing brownish-grey. 
Arizona. 
83. Genus: I*latyperigea Sm. 
The genus is about the same as the palearctic genus Petilampa (Vol. Ill, p. 215); without a proboscis, 
with short porrect palpi, a smooth frons, the tuftless thorax clad with rough hair intermixed with hair-like 
