912 
NYSTALEA. By Dr. M. Draudt. 
grisescens. them. Hindwing whitish-grey, veins and margin brownish. — f. grisescens Dogn. lacks the rusty yellow colour 
on the head, collar and metathorax, and at the inner margin of the forewing. Expanse of wings: 43 mm. French 
Guiana. 
ocellata. N. ocelSafa Rothsch. (143 i) is presumably the most gaudy species. Forewing brown, with red-brown 
reddish-yellow and violet transverse striae, a red-brown transverse shadow in the centre, and two violettish- 
pink lines at the end, followed by a light blue spot, with 3 or 4 dentate dark transverse lines; a round velvetv 
black subapical spot looks like an eye in a reddish-yellow corona, a submarginal row of small slaty blue spots. 
Colombia, Guiana, Peru. 
scintillans. N. scintillans sp. n. (143 i). Palpi brownish black; head and thorax deep blackish-brown, intermixed 
with silvery blue scales and hairs, abdomen dark greyish-brown, darker analwards with single silvery blue 
hairs; ventrum yellowish-grey. Fore wing deep brownish-black, strewn with silvery blue, with velvety black 
markings consisting of a thick oval spot in the base of the cell and longitudinal stripes as far as the antemedian 
line which is situate almost in the centre and is undidate-dentate, followed by a twice as thick black dentate 
line between the costal margin and vein 2; behind it there is an irregular reniform macula, followed by the 
indistinct postmedian line which extends obliquely towards the anal angle between veins 3 and 1; the notched 
subterminal line is shaded dark red-brown inwards; a blackish-brown submarginal dentate line forms two thick 
black lunular spots bordered with silvery blue outside, between veins 2 and 1. Hindwing blackish-brown, 
yellowish-white basally and at the inner margin. This uncommonly beautiful species was captured by Werxer 
Hopp on the Rio Bagua (West Colombia), at an altitude of 1000 m, in May. Type in the Berlin Museum. Veins 7. 
8 and 10 of fore wing not stalked. 
squamosa. N. squamosa Btlr. (143 i) forms the transition to the next species; fore wing greyish-brown, trans¬ 
versely irrorated dark especially behind the centre of the costal margin, with very indistinct transverse lines, 
only the very deep notches of the anterior one are somewhat more distinct; from a lighter reniform macula 
at the cell-end a light longitudinal patch extends into the apex; tmdulate line irregular, lighter, shaded with 
dark inwards; feeble dark internerval dots before the margin, a larger round black subapical spot. Hindwing 
brownish-grey. Brazil. 
virgula. N. virgula Fldr. (143 i). Forewing densely dusted with steel-black and violettish-red on the yellowish- 
grey ground; thus the ground-colour remains only below the lower cell-encl and at the apex and it is connected 
with a basal spot below the median vein, forming a longitudinal patch which traverses the whole wing as far 
as below the apex; all the other markings are rather indistinct except a very pointedly notched anterior and 
a flatly undulate posterior transverse line; the latter is followed behind the cell by a black lunula, with a red- 
brown lunula above and below it, with fine white vein-dots below the centre. Hindwing yellowish, grey at 
the margin. Larva exactly like a zfczac-larva, grey with longitudinal lines directed obliquely forward below, 
and slender humps, the two posterior ones of which are orange-brown like the last segment; it lives on oaks. , 
Most widely distributed from Mexico to Argentina and Paraguay. 
super- N. superciliosa Gn. (143 i) is also very widely distributed and common, coloured somewhat like virgula , , 
cihosa. put i ar ger and with broader wings, without the light longitudinal patch, transversely watered with numerous 
fine black and brown postcellular lines, with a black dot in the lower cell-angle. Mexico to Brazil and Colombia. 
§ s 
drucei. N. drucei Schs. [ — sabella Drc., part.) (143 i) has light grey forewings, darker in the basal half, and 
with scanty darker transverse striae; the double black median line is most distinct below the cell; its interior 1 
portion is stronger, the posterior transverse line is dentate, with black vein-dots behind it; a small reniform 
macula, finely surrounded with dark, is at the cell-end, a black lunar line is before the margin. Hindwing 
whitish, smoky at the margin. Panama. 
nyseus. N. nyseus Or. ( = guttiplena Wkr.) (144 a) is one of the best known species of a wide range. The whitish- 
grey ground of the forewing often shows a violettish-blue tint, dusted with red-brown, especially at the inner 
margin and subterminally, densely strewn with white and black on the veins, with indistinct double trans¬ 
verse lines which begin with intense red-brown double streaks at the costal margin, with a thicker black short 
transverse streak in the median line below the cell, black and white vein-dots behind the postmedian line, 
and 3 black dots below each other in the long narrow reniform macula which is basally extended into a fine 
streak. Head and thorax ochreous, hindwing iridescent diaphanous whitish, with a broad brownish-grey band 
collaris. at the margin. A most variable species from Mexico to Brazil. — f. collaris Schs. (144 a) has a dark brown 
or blackish-brown head and prothorax. Described from Costa Rica, but some specimens are also from Mexico. 
quaesita. N. quaesita n. sp. (144 a) is very similar to nyseus, but it has much narrower wings of a yellowish-grey 
ground-colour without any violettish-grey tints and without the blackish-white irroration of the veins, whereby 
it is much more regularly marked; the red-brown inner-marginal colouring is entirely absent and is only 
feebly visible in the interior border of the light subterminal line; all the transverse markings are very feebly 
darker yellowish-grey, the brown double beginnings at the costal margin finer and more distinct, the black 
transverse spot below the centre of the cell is very prominent, also two spots below and above vein 3 in the 
