Publ. 10. I. 1920. 
MALLOCEPHALA; ANTARCTIA. By Dr. A. Seitz. 
321 
20. Genus: Mallocepliala Blch. 
The butterflies corresponding with the palearctic Ocnogyna have an accessory cell in the forewing. 
The $ antennae are doubly combed with long branches and the $ abdomen is a very slim appendage dispro¬ 
portionate to the robust thorax, being somewhat conspicuous only owing to the long, dense, fleece-like hairing. 
The $ is very characteristic by a complete stunted growth of the wings. The palpi are just like in the Antarcticv 
and Palustra lowered in the resting butterfly, their tips showing almost downward. Only few species resembling 
each other are known, the wings being unmarked. The larvae are covered with short and dense tufts of hair, 
with raised tubercles, living on low plants, numerous in the gardens of the towns, the male butterflies common 
on the lanterns in the streets. 
M. deserticola Berg (41 d). In the the head, antennae, thorax, and forewings are of a light greyish- 
brown, hindwings and abdomen white, the former rarely with a darkened apex. The $ is quite yellowish-grey, 
the abdominal end broad white and woolly. Argentina, Patagonia, according to H amp son also from Colon. 
I captured both sexes in the town of Buenos Ayres itself, on the garden-walls, and found the cocoons underneath 
the covers of walls, in February. Not rare. 
M. brittoni Rothsch. is very closely allied to the preceding. Head, body, and forewings of a brownish- 
creamy colour. Hindwings white. Antennae light brown. La Soledad in Argentina. 
M. latior Btlr. (41 d). Dark ochreous-brown, hindwings dirty ochreous-white, abdomen of a brighter 
yellow with black dorsal transverse bands. 2 yellowish-brown with similar stumps of wings and a white anal 
part of the abdomen. —• Larva black with blue warts and red-brown, partly grey hair. Imago in February. 
Chile, common. — tegulata Btlr. is based upon 2 from Valparaiso, the wings being of a greyish chocolate 
colour instead of dark ochreous-brown, the hindwing at the base diaphanous. — angustior Btlr. has narrower 
forewings, and the ground-colour is bronze-brown. Likewise from Valparaiso. —- ab. obscura Btlr. finally is 
a name given to an uncommonly dark specimen ($). — The larva of latior , according to Edmonds, is entirely 
Arctia- like. 
M. magna Rothsch. (41 d). Thorax and forewings dark chestnut brown, hindwings whitish, head 
and abdomen above tinted orange. Salta in North Argentina. 
M. peruviana Rothsch. (41 d) is somewhat smaller than magna-, hindwings darkened by a dirty grey 
colour. It is distinguished by the abdomen being ashy-grey above. South East Peru. The are common, 
the $2 not yet known. 
M. insipida Rothsch. Size of deserticola (41 d). Head, chest, and legs slate-coloured, antennae reddish- 
grey; thorax, abdomen and forewings of a greyish-cinnamon colour. Hindwings greyish-white. Lagama 
(Argentina). 
M. rubripes Blch. resembles insipula , and is just as large, of a dark red-brown with lighter hindwings. 
Recognizable by the rosy-red palpi and upper surface of the femora, as well as by the red abdomen with a black 
dorsal line. Chile. 
21. Genus: Aiitnretia Hhn. 
Very closely allied to the preceding genus, forewing with an accessory cell; body like in the Mallocephala 
with a long, shaggy hair-fleece. But in the species of which the $$ are known, the latter are fully winged. 
More than 30 species are known, almost all of which inhabit the southern temperate zone of America. 
A. vulpina Hhn. (= pallicosta B-sd. , uruguayensis Berg) (41 d) is coloured almost like a large Mallo¬ 
cephala latior (41 d), dark-brown with dirty-white hindwings and a golden yellow abdomen which, however, 
is without the black dorsal bands, and differs besides by a creamy-white stripe along the costa. In the $ the 
hindwings and a costal stripe are of a more intense yellow-brownish tinge. — Larva quite black with black 
tubercles; across the dorsum a series of partly paired, yellowish-brown brushes. Very common in the pampas 
of Argentina and Uruguay, in January and February ; in Montevideo in the Prado, and in the evening on lanterns 
in the streets. 
A. felderi Rothsch. (41 f) is exactly like vulpina in its size and colours. Brown forewings, with a 
creamy yellow costal stripe in the q, dull white hindwings and yolk-coloured abdomen; only the colour of the 
forewing is not a dark chestnut brown, but a red-brown fox-coloured tint. From Rio de Janeiro. There are 
only 2 specimens known. 
A. aurantiaca Rothsch. (41 f) is like the preceding, but the forewing yellowish-brown, without 
the costal stripe, in the $ yolk-coloured, the hindwings a little lighter. From Rio de Janeiro, through South 
Brazil and Paraguay as far as Bolivia. 
A. lehmanni Rothsch. is somewhat larger; the only specimen known originates from Popayan in 
Colombia and is quite unicolorously greyish-white with orange-yellow abdominal sides, the antennal shaft 
white with a brown comb. 
VI . J D „ 41 
deserticola. 
brittoni. 
latior. 
tegulata. 
angustior. 
obscura. 
magna. 
peruviana. 
insipida. 
rubripes. 
vulpina. 
felderi. 
aurantiaca. 
lelnnanni. 
