argyria. 
transiens. 
diluta. 
pallantias. 
victria. 
ikarios. 
autolycus. 
agathus. 
penelope. 
antikleia. 
560 PREPONA. By H. FRUHSTORFER. 
surface of the forewings are extremely widened. decorata approaches simois Fldr., though it has above narrower 
blue bands and smaller blue subcostal spots, the 5 blue dots on the upper surface of the hindwings being elso 
absent. Under surface: all the black bands and maculae thinner and more delicate, the silvery spots somewhat 
broader and standing more closely beneath each other. Hindwings of a more greyish than yellowish-brown 
ground-colour. The ocelli considerably smaller. Minas Geraes. — argyria subsp. nov., the production of a pro- 
vince with a preponderantly dry climate, having above still more considerable and lighter blue magnificent — 
bands than decorata. The ocelli of the hindwings extensively bordered by ochreous, as it is not noticed in any 
other race of eugenes. Under surface without the yellowish admixture in the basal region of an almost pure 
white and silvery gloss. The median spotted side of the forewings narrower than in decorata, but united more 
to the shape of a band, the black submarginal band extraordinarily strong, resembling P. pylene bahiana with 
which I even formerly united it. Bahia. — transiens Fruhst. This peculiar Prepona forms an intermediary 
between eugenes and P. pylene. With eugenes it has in common: the wing-contour, the apex being but some- 
what prominent and the insignificantly developed anterior blue median spots of the forewings, as well as the 
distally ochreous-yellow ringleted anal ocellus on the hindwing shining distinctly through to the upper surface, 
and especially the yellow scent-tuft of the hindwings. The median band, however, is darker blue than in the 
eugenes-forms and harmonizes in the colouring with the P. pylene-races. Under surface: excepting the absent 
black dot between the little subcostal veins (just like in eugenes), the dark colour, especially of the distal 
half of the wings, coincides with the vicarious types of P. pylene. Environs of Theresopolis, Varge grande, 
at an elevation of about 2000 m in Santa Catharina. Hitherto only one specimen discovered and known. — 
diluta Fruhst. The blue bands on all the wings appear somewhat narrower than in laértides Stgr. and are 
on the hindwings, towards the anal angle, somewhat tapering. The under surface of diluta is lighter and provided 
with more diffuse markings, especially with respect to the black zigzag-discal-bands. The base of the hind- 
wings more yellowish, instead of purely silvery-white as in laértides. The marginal zone of the hindwings with 
obsolete grey, instead of black scales. The ocelli with more indistinctly black pupils, bordered by a lighter 
and broader yellow. Paraguay. Valve (judging from a specimen of the laértides Stgr.-race) distinctly rounded off. 
P. laértes. One of the best known species being still the most. difficult to discuss, since it inclines to 
the most extravagant variations of all the representatives of the genus. Hardly any specimen is like the other, 
and even the characters of marking on the under surface are variable. The under surface resembles somewhat 
that of P. eugenes, P. pylene and P. gnorima (112 b), though it is immediately separable from all these species 
by the absence of series of white or silver-glossy spots at the median band of the forewings. The under sur- 
face, in general, equals our figure of P. autolycus (112c¢) and varies in such a way that according to the 
locality there are specimens predominant either with extensive ochreous parts or with preponderantly grey 
parts. Most conspicuous is the variation of the yellowish median zone between the submarginal and the trans- 
cellular black zigzag-band. Sometimes these lines approach each other near the cell like in autolycus (112 ¢) 
on our figure, so that a narrow yellow or grey-tinged canal results, or the small zigzag-stripes are separated 
from each other so that there is a wide, broad opening somewhat similar to that in neoterpe (112d). Inter- 
esting combinations of figures are also formed by the hepatic or cordiform spot between the middle or posterior 
median standing isolated or, as in 112 ¢ in autolycus, touching the submarginal band or being entirely absorbed 
by it, so that peculiar broad serrated contours are being formed. On the upper surface we notice the constel- 
lations being also usually found in the black-turted Prepona of the meander-antimache-group. The three trans- 
cellular spots depicted on our figures of penelope (111 a) and pallidior (111 a) may be existing in ¢ and 9, or 
be missing altogether (fa. antikleia Fruhst.). Besides there are also intermediate forms with but one broadly- 
emanated costal spot, especially in the 99, and small blue subapical splashes. The range of P. laértes is about 
the same as that of P. antimache. The offshoots of the collective species are found from Costa Rica to Bolivia 
and from Guiana-to the southernmost parts of Brazil and Paraguay. — pallantias subsp. nov. The blue band 
of the forewings of the 92° more uniformly broad, anteriorly more compact, more roundish. Under surface 
uncommonly extensively faded, ochreous. Shape entirely larger than in the more southern races from the 
Amazon and Guiana, Costa Rica, parts of Colombia, — vietrix form. nov. forms the maximum of the luxuriant 
development of the blue magnificent area exhibiting besides, by means of two imposing transcellular spots 
and a very broad costal spot, a band-shaped prolongation as far as to the costal margin of the forewings. From 
the Upper Rio Negro from 800 m (East Colombia), sent to me for inspection by Mr. Fassu. — ikarios Fruhst. 
is a form occupying the whole Amazon basin up to the foot of the Andes and Guiana. Upper surface like in 
penelope (111 a), but the blue bands shorter and broader. As autolyeus Fruhst. a form is described without 
blue costal spots of the forewings. By the profusely dark-yellow under surface of the wings, ikarios is coloured 
according to the same scheme as P. antimache demophoon Hbn. — agathus subsp. nov. is based upon a large 
form found predominantly in Peru, but also appearing already in some parts of Ecuador. The magnificent areas 
of the upper surface surpass those of penelope (111 a) in extent. — penelope Fruhst. (111 a) is beaten in the 
habitus by agathus. The discal band of all the wings is of a darker blue and narrower than in the nor- 
thern forms; the under surface exhibits fewer ochre-yellow places. — As antikleia Fruhst. a g-form was 
introduced without a blue preapical spot on the forewing. Bolivia. ,,The copulation-apparatus is (according 
to SrrcHEL) distinguished by two long lateral, somewhat curved, strongly chitinized prolongations below the 
