420 
COTANA. By Dr. A. Seitz. 
joiceyi. 
germ ana. 
bakeri. 
rubrescens. 
kapaura. 
oetakwensis. 
kebeae. 
grandis. 
dubia. 
lunulata. 
albaserrati. 
occidental is. 
satisbona. 
erectilinea. 
setakwensis. 
affinis. 
albomacu- 
lata. 
as nearly all ol them occur in New Guinea and the adjacent islands, it is hard to say how many species and 
subspecies there are. The $$ of nearly all the species are chocolate-brown with a yellowish-red dorsum and 
costal margin of the forewing, all the wings traversed by thick light veins and with an antemarginal chain of 
white spots and a large cell-end spot of the forewdng. As the larvae seems to be entirely unknown, we supply 
here the synopsis of the genus, as it was established by Lord Rothschild who figures nearly all the forms. 
Many of these forms originating from confined localities are presumably geographical representatives, but 
we renounce such a systematic classification which would remain uncertain as the biology is entirely unknown 
to us. The type of the genus is L. rubrescens. Lord Rothschild herewith also includes the genera Epicydas 
B.-Bak. and Hypercydas B.-Bak. and the genus Nervicompressa B.-Bak. based upon the d'c? of Cotana. 
C. joiceyi Rothsch. (56 B a). yellowish-brown, forewing tan-coloured, hindwing tinged golden yellow, 
forewing with a straight transverse streak through the middle and an extinct parallel streak through the distal 
third. $ with an orange-red body, and grey apex of the abdomen; through the pale chocolate wings extends 
a chain of white wedge-shaped spots, and before the middle of the forewing is a large, white central spot. Arfak 
Mountains in Dutch New Guinea. 
C. germana Rothsch. $ like that of rubrescens (56 B c), but the forewing is of a paler brown, the 
transverse streak thinner; $ like that of joiceyi (56B a), but the centre of the wing is crossed by a slightly curved 
darker band. Aroa River (British New Guinea). 
C. bakeri Joic. & Talb. Only 1 $ known, looking almost exactly like a <$ of joiceyi (56 B a), but the 
transverse streak in the distal third is absent, whilst that through the middle of the forewing is somewhat duller, 
and proximad to it the cell-end spot is feebly traceable. Wandammen Mountains (New Guinea). 
C. rubrescens Wkr. (= unistrigata B.-Bak ., turneri B.-Bak.) (56 B a, b). $ similar to the preceding, 
but the transverse streak of the forewing is broader and towards the margin somewhat concave; both wings 
are more of the same colouring. In the $ the light veins are thicker and more distinct, the antemarginal 
cucullate spots and the central spot dull yellowish-white. Distributed in the mountains of New Guinea and in 
the Aru Islands. — kapaura Rothsch. from Dutch New Guinea has a more cinnamon-brown with obtuser 
forewings, the $ with a lighter ground-colour, a saffron-coloured costal-marginal area of the forewing and a 
similar base of the wing, and the dark yellow spots of the wings are more extinct. — - oetakwensis Rothsch. from 
the Oetakwa River has a thick velvety black transverse stripe of the forewing and cell-end spot. 
C. kebeae B.-Bak. (56 Be), allied to the preceding, but the second transverse stripe in the distal 
third of the forewing likewise distinct and both transverse streaks also traceable in the hindwing. $ unknown. 
British New Guinea. — grandis Rothsch. from Dutch New Guinea is much larger (expanse of wings: 43 mm, 
against 35 of the type), it has a dark brown thorax, and the fore wing is marked and shaded deeper brown. 
C. dubia B.-Bak. (56 B b). The <$ deviates from the preceding by the median transverse stripe being 
duller than the distal one, and by the veins behind the latter stripe exhibiting small blackish-brown spots. In 
the $ the submarginal bone-coloured spots are cucullate and the veins marked very bright bone-white. British 
and. Dutch New Guinea; apparently common. 
C. lunulata B.-Bak. (56 B a). The has a dark chestnut thorax and forewing, so that the dark median 
transverse streak is rather indistinct; hindwing with brown, partly undulate transverse stripes on a reddish yolk- 
coloured ground. In the $ the cucullate spots are broadly contiguous and, like the discal spots of the forewings, 
of a pure white. British New Guinea (Angabunga and Aroa River). — albaserrati B.-Bak. from the Mam- 
bare River has the distal area of the $ forewing yellow and all the markings more distinct. — occidentalis Rothsch. 
has the <$ forewing lighter brownish, the median transverse band of the forewing broad brown, with a distinct 
whitish cell-end spot. — - satisbona Rothsch. in the shows a light undulate transverse band parted by brown 
before the dark marginal area of the forewing, whilst the hindwing is covered with dark brown, with strong 
undulate bands; in the $ the white cell-end spot is but small. From the Island of Goodenough. 
C. erectilinea B.-Bak. (57 d). From the preceding the $<$ (the $ is not known) are easily discernible 
by the proximal area of the forewing, proximad to the median transverse streak, being lighter than the distal 
part of the forewing. In typical from the Ninay Valley the transverse streak is distinct and quite straight 
and distally uniformly strongly shaded. — In setakwensis Rothsch. from the Snow Mountains in Dutch New 
Guinea the shade extends distally to the median streak at the costal margin farther distally and narrows at 
the proximal margin, the whole wing being lighter and the discal spot very large and distinct. 
C. affinis Rothsch. The $ is unknown; the $ resembles that of erectilinea (57 d), but the basal area 
of the forewing is creamy with an oblique chocolate band near the base and a broad dark antemedian band; 
the rest of the forewing is grey, tinted brownish with dark, partly undulate transverse stripes and a dark, 
white-pupilled discal spot; size about that of the preceding. Dutch New Guinea. 
C. albomaculata B.-Bak. ($ =- ovata B.-Bak.) (56 Be) ^ and $ similarly coloured pale chocolate-brown 
with an antemarginal, in the $ very thin chain of white spots and an oval central spot of the forewing; in 
the $ also the apex of the fore wing is dirty white. British New Guinea. 
