PRORIFRONS. By Dr. M. Drattdt. 
'peruviana. 
songoensis. 
rufescens. 
hoppi. 
championi. 
tremula. 
crenulata. 
5 70 
P. peruviana Drc. (76 e, 77 b) is probably the most easily discernible of all the species. Forewing 
broad, blackish red-brown, in the anal quarter contrastingly light brown with reddish-yellow veins; the double 
lines bordering on the broad median area are so very close together as in no other species; the white discal 
spot is very large and bright in the black discal longitudinal patch; 2 anal spots almost vertically above 
each other are deep velvety black and very large. Hindwing dark red-brown with almost pure white fringes. 
The $ is much lighter. Peru, Bolivia (Chaco). 
P. songoensis sp. n. (77 b) has the same marking as peruviana, but broader wings. The ground-colour 
is a lighter yellowish-brown with a still lighter anal quarter and reddish-yellow veins; the double lines 
bordering on the median area are not so close together, the blackish-grey discal longitudinal patch is intense, 
the white cellular dot feeble like the two small black anal spots; hindwing light reddish yello wish-brown, its 
anterior angle much more prominent than in peruviana, and the abdomen is much shorter. According to a 
d from the Rio Songo (Bolivia); type in the Berlin Museum. 
P. rufescens Schs. (77 c) is the most similar to castullux as to the shape of the wings, but the apex 
of the fore wing is more rounded. The colour of the wings is a light yellowish red-brown, only slightly inter¬ 
mixed with whitish-grey, the transverse lines curved as in peruviana, but more separated; the narrow 
blackish discal longitudinal stripe extends from the tiny white discal dot to the subterminal line being composed 
of yellowish spots which are centred near the apex with 2, analwards with 2 or 3 black spots which, however, 
may be indistinct; the median area is of a rather pure red-brown, the subterminal and marginal areas somewhat 
darker than the postmedian area which is intermixed with whitish-grey, the marginal area particularly analwards 
powdered with a delicate lilac-grey. Hindwing reddish-brown with lighter fringes. Costa Rica. A specimen 
from the Coll. Staudhstger, labelled ,,Mexico“, shows a somewhat more olive tint. 
P. hoppi sp. n. (77 a, b) is a beautiful species closely allied to rufescens', the red-brown forewing 
exhibits particularly the antemedian and postmedian areas very much intermixed with whitish-grey hair-scales, 
especially at the hind-margin; the curved lines are prominent almost white, the blackish longitudinal stripe 
through the cell-end, enclosing the small white cellular dot, almost extends to the subterminal line which is 
composed of a more or less complete row of black small spots inwardly bordered with yellowish. Collar con¬ 
trastingly whitish-grey, also the thorax very light. Hindwing red-brown with almost white fringes. The $ 
is much more uniformly red-brown hardly intermixed with whitish-grey. Described from 2 SS and one $ from 
Chachatoy (Colombia), 2300 m. Type in the Coll. Hopp, Charlottenburg. 
II. Sect. Transverse lines, at least the postmedian one, finely dentate towards the costal margin. 
P. championi Drc. (77 c, 86 a). The identification of this species which was long misunderstood has 
caused the most difficulties, because beside the type, the photo of which was most kindly put at our disposal 
by the Brit. Museum, apparently at least no other specimen exists. It is allied to the two preceding species 
from which it is separated by the small fine dents of the postmedian line below the costal margin; the shape 
of the wings is broader, the apex rounder, the whole insect smaller; the colour is a soft brown, the antemedian 
and postmedian areas are just as broad as the somewhat darker median area which is almost broader at the 
hind-margin than at the costal margin and projects a little below the submedian fold on both sides rounded; 
the tiny blackish subterminal spots form an almost complete, slightly S-shaped row. The figure in the 
Biologia is deceptive, the description futile. Described from Panama. In contrast with conradti, the accessory 
spine at the penis is situate almost as high as the main spine, and in the concavity between both there is another 
small plain spine and a bicuspid spine. The $ figured on pi. 86 a we have placed here only as the presumable 
§. It originates from Ecuador. 
P. tremula Schs. (77 c). Here begins a very difficult group of closely allied and variable species extra¬ 
ordinarily allied to championi ; their sure identification will therefore only be possible by examining the peculiarly 
shaped genitals, the more so since the similar species vary also in the same direction, tremula is rather large, 
the basal area as far as the darker median area brown, strewn with yellowish-reddish, traversed by a darker 
waved line proximally bordered with a lighter colour; the white discal dot is very small; the postmedian and 
subterminal areas are lighter than the basal area, traversed by an undulatingly dentate, distally light line, passing 
over without a distinct border into the yellowish ochreous subterminal spots, projecting scalariformly especially 
in the centre and subanally, each of them being outside spotted blackish; the marginal area behind it is strongly 
mixed with grey. Hindwing dark brown with hardly lighter fringes and traces of two lighter transverse bands. 
Costa Rica to Colombia. 
P. crenulata sp. n. (86 b). There is but one faultless before me, for which I am indebted to Mr. 
Bang-Haas; without examining the genitals, it is therefore impossible to ascertain whether it is only a form 
of tremula. Forewing and hindwing not entirely margined as in tremula, but decidedly undulatingly margined. 
Ground-colour redder, hindwing almost copper-coloured, with whitish tips of the fringe. On the fore wing the 
subanal line is similarly shaped as in tremula, the median area about thrice as broad, the line defining the 
