centralis. 
MUSON. 
demophon. 
sysiphus. 
thalpius. 
wyniatus. 
pamenes. 
extincta. 
catachlora. 
zoranthes. 
aelia. 
phaedra. 
554 PREPONA. By H. FRUHSTORFER. 
B. Group of Species Prepona. 
Section Archaeoprepona Fruhst. Hair-tuft of the hindwings black. 
P. demophon, the most common species having been known the longest, has a plainly marked under 
surface, preponderantly yellow or ochre-yellow with effaced black spots, indistinct black lines and a silvery 
grey hue varying according to the locality. The 9° is always larger, beneath with less black, preponderantly 
yellowish with effaced reddish-grey hue. The specimens decrease in size in the direction from north to south. 
The species is very rare in Mexico and ascertained as far as Southern Peru and Bolivia. On the Atlantic side 
demophon reaches from Guiana to Santa Catharina, Rio Grande do Sul and Paraguay. Tegumen with a short 
compact uncus-point the dorsal basal part of which is very much chitinized and provided with a deeply indented 
comb. — centralis Fruhst. is known to me only from Honduras. The form appears considerably larger than 
Surinam-specimens and is never beaten by muson (111 a) in the extent of the wings. The median band, espe- 
cially of the hindwings, is more extensive than in the nomenclatural type from Surinam, more greenish and 
golden than blue. The subapical spots of the forewings of the §¢ larger, almost circular, isolated, in the 2° 
like diffuse spots, narrower than in Surinam-specimens. Under surface entirely lighter, preponderantly greyish- 
violet instead of ochre-yellow, with prominent blue-pupilled ocelli of the 99. According to GopmMAN and SaLviIn 
already very rare in Mexico. In the Coll. StaupINGER there are specimens from Yucatan and Venezuela. — 
A series of forms from Panama already sides with muson Fruhst. (111 a), the Andine territorial form with the 
type from Colombia. I have also $3 from Ecuador at hand, and STavuDINGER mentions specimens from South 
Peru. The demophon-race of the northern Andes is considerably larger than specimens from Surinam. The 
median. band of the upper surface of the wings is broader and lighter, more golden green; the under surface 
is distinguished by an especially pronounced and more glossy submarginal region being traversed by a very 
dark reddish-brown band which is hardly noticeable in Surinam-specimens. — demophon L. (111 a), the nomen- 
clatural type, is very common in the Amazon district and in all the three Guianas. Specimens from Mato- 
Grosso and Bolivia do not differ considerably from those from Surinam. — As sysiphus Cr. a form is described 
with especially broad and darkened brown places on the under surface of both the wings. — Also thalpius 
Hbn. is based upon darkened, deviating specimens with a beautiful reddish-violet hue beyond the cell of 
the forewing and in the median and basal zones of the hindwing. — xyniatus subsp. nov., distinguished by large 
transcellular spots of the forewings and conspicuously broad light-blue median band of a very intense golden 
green lustre. The under surface exhibits but quite faint greyish-silvery marbling, being still more effaced than 
in eatincit. Bahia; varies also in Minas-Geraes. — pamenes subsp. nov. inhabits Minas-Geraes and Espiritu 
Santo, probably also yet Rio de Janeiro. g with more irregular, smaller transcellular spots and narrower, 
darker blue bands of the forewings than xyniatus. — extineta Stgr. (111 b), originally based upon specimens 
from South Brazil (Blumenau) is also found in Paraguay. As a rule of a small size with preponderantly greyish- 
violet hue of the under surface of the gg and yellowish of the 99°. The black median lines, especially in the 
9 effaced. Larva on Anonaceae and Albacata-trees (Persia gratissima). — catachlora Stgr. (111 b) is found 
from Minas Geraes, beside P. demophon extincta, end was bred by Dr. WirH. MUELLER from larvae differing 
from demophon. In Rio Grande do Sul catachlora is common. The under surface makes quite the impression 
of a form of the dry season or of a cold period of P. demophon, being easily noticeable by greenish places 
bordered by beautiful parts of a silvery greyish-violet lustre. The subapical spots of the upper surface are 
smaller, but like the narrower bands more intense and of a darker blue gloss than in demophon. — In zoranthes 
subsp. nov. from Rio Grande do Sul there is sometimes only a blue subapical spot, and the median band of 
the forewings is very much narrowed. The chitinous part at the back of the uncus less sharply dentate, the 
other parts, however, agree so exactly with P. demophon that catachlora can only be considered a form of con- 
dition of demophon, but by no means, as was hitherto done, a species of its own. (A g from Espiritu Santo 
was examined.) 
P. phaedra is an isolated species with a likewise unmarked, but darker under surface than P. demo- 
phon. The upper surface is like that of P. tyrias (111 b), but the blue median band of the hindwings is narrowed 
towards the anal angle, and the under Surface just as intensely grey as in P. crassina (111 ¢), though without 
the black spot at the submedian of the forewings. Two local races: aelia Godm. and Salv. described according 
to a 3 without blue subapical spots of the forewings, from Mexico, and phaedra Godm. based upon a 9 from the 
Volcano Chiriqui. One specimen of my collection exhibits small dark-blue subapical maculae of the forewings. 
P. antimache is always met beside P. demophon, although it does not reach Mexico in the north. 
The magnificent band of the upper surface is of a purer blue, but it has only exceptionally a greenish-golden 
reflection. The under surface is characterized by our figure of tyrias (111 b) and varies according to the habitat 
from preponderantly effaced ochre-yellow (Amazon, Surinam) to light silvery-grey (South Brazil). The black 
part at the inner margin of the forewings appears more extensive than in P. demophon. In some insular 
ae ee 
