NYCERYX. By Dr. M. Draudt. 
877 
N. maxwelli Rothsch. (== stuarti Rothsch.) (98 B c) is very closely allied to continua, but much larger. 
A variegated species with red-brown markings on the light lilac-brownish ground; the red-brown inner-marginal 
spot does not extend above to the cell and is black especially at the upper end. Apex of hindwing not hlack 
but red-brown. Tegnlae edged with white; palpus with a distinct white spot. Only few specimens are known 
hitherto. Peru; Ecuador; Bolivia; Sa. Catharina. 
N. nictitans Bscl. (= subaurea Kohler) (98 B c) is similarly coloured above as tacita, but at once 
discernible by the fore wing beneath being dark brown in the basal part and by two distinct dark brown fine 
longitudinal lines on the ventral side of the abdomen. Hindwing very dark reddish-ochreous, almost rusty 
brown with 2 more or less distinct median lines ending in a large spot towards the inner margin. Forewing 
with a small discal spot bordered with white scales on the interior side. South Brazil (Rio de Janeiro to Rio 
Grande do Sul). — saturata R. J. is the Peruvian form of a much deeper ground-colour, but with less reddish- 
yellow hindwings. Forewing more lobate at the distal margin. The two reddish-yellow postdiscal spots beneath 
are traversed by brown undulations and much smaller. — bryki Gehlen is founded upon a specimen from 
Chanchamayo, which is intensely marked rusty red instead of blackish-brown. 
N. continua Wkr. ( = distans Bscl.) (98 B c) is a smaller variegated species which is at once separable 
from the otherwise similar maxwelli by its smaller size and the entirely black marginal band of the hindwing. 
The basal costal-marginal area of the forewing is withoirt distinct linear markings. The oblicpxe antemedian 
band is filled with black; stigma rather large. Hindwing yellow as far as the inner margin. Brazil (Espiritu 
Santo to Parana). — cratera R. & J. (maxwelli R. &. J. part.), owing to its larger size, is still more similar to 
maxwelli. The upper surface of the body and wings is of a greyer colour, the marginal band of the hindwing 
is broader and less distinctly defined, and it extends before the orange inner margin to the base; a brown spot 
below the cell-end and a few more spots behind it. Peru, Bolivia (Rio Songo). 
N. alophus Bsd. (= nephus Bonningh .) is similar to continua. Prothorax and mesothorax browner, 
tegulae not so purely white-edged. Forewing more variegated owing to more distinct linear marking; stigma 
narrow and oblong; a blackish subbasal band. The nomenclatural type from Brazil, Bahia to Parana, is the 
darker form showing the antemedian band filled with black. — ixion Burm. (= nephus Burm.) (98 B c) is a 
lighter form in which the antemedian band is not filled with black. Bolivia, Paraguay and Argentina. 
N. nephus Bsd. Only the typical specimen is known of this species. Coloured very much like alophus, 
but the upper surface shows a broader marginal band of the hindwing. The disc of the forewing beneath is 
ochreous, traversed by distinct crescentiform lines in the distal part of the costal margin. Genital apparatus 
different. Brazil. 
N. riscus Schs. (= creusa Rothsch.) (98 B d) is a more common species, similar to stuarti, but much 
smaller and with an excavated forewing below the apex. Ground-colour of forewing light reddish-brown with 
a slaty blackish marginal band defined inside by a deep dark brown arcuate band. Mexico to Bolivia and Brazil 
(S. Paulo). 
N. stuarti Rothsch. (= riscus Drc.) (98 B d) is much larger than riscus with darker forewings which are 
truncate below the apex and not excavated; the postdiscal linear markings are more bent below the costal 
margin. The yellow on the hindwing is more reduced. Peru and Bolivia. 
N. draudti Gehlen (98 Ce) is very similar to stuarti , but larger and it has broader fore wings; ground¬ 
colour greyer, not so reddish-brown, metathorax with 2 red-brown hair-tufts. The distal margin of the forewing 
is more sharply dentate, the apex distinctly concave; the black marginal band is straight, not curved, and 
proximallv accompanied by another feebler parallel line, a greyish-white stripe distally to the marginal band; 
the other marking is more reduced than in stuarti. Hindwing more extensively yellow and the dark brown tints 
more greyish-black. Length of forewing: 34 mm. Shanusi (Peru, at the sources of the Amazon R.). 
N. miiheri Clark (98 B cl). Near clarki Fassl, but smaller. Light brown above with a dark brown marking, 
without any silvery grey; with a large triangular dark brown inner marginal spot, 3 undulate lines behind it; 
distal margin similar to that of eximia, but more notched in the centre of the margin and at the anal angle. 
A straight dark brown longitudinal shadow extends from the upper cell-angle to the centre of the margin. 
Hinclwing dark brown with an orange costal-marginal area, with bluish-white scales in the anal area and undulate 
submarginal lines. Orizaba (Mexico). 
N. clarki Fassl. Antennae brown, similar to stuarti, head, thorax and abdomen lighter than in coffeae. 
Marking between coffeae and maxwelli. Hindwing with a narrow ochreous longitudinal area at the costal margin, 
which, however, is half as narrow as in stuarti', the other marking towards the anal angle similar to maxwelli , 
but more distinct and extending farther in front. Similar to coffeae beneath, but without bluish-grey marginal 
areas and turning somewhat olive green especially towards the base. Expanse of wings: 60 mm. Bolivia (Rio 
Songo), at an altitude of 750 m. 
maxwelli. 
nictitans. 
saturata. 
bryki. 
continua. 
cratera. 
alophus. 
ixion. 
nephus. 
riscus. 
stuarti. 
draudti. 
miilleri. 
clarki. 
