198 LEPIDOPTERA HETEROCERA 
strong, second joint somewhat rough-scaled, third joint small, concealed. Tongue present. Antenna 
scarcely one-half, in. cf shortly bipectinate (the branches scarcely longer than diameter of shaft), apex 
nearly simple; in Q nearly simple. Pectus hairy. Femora glabrous; hindtibia in c not dilated, in both 
sexes with four well-developed spurs. Abdomen rather long, not crested. Frenulum in &' moderately 
strong, from before basal expansion, retinaculum near base; Q frenulum wanting. Forewing with costa 
straight, termen curved, strongly oblique, tornus rounded, cell about one-half, DC very deeply incurved, 
SC! anastomosing (usually strongly) with C, SC? very short-stalked (usually arising before R!), anast- 
omosing with SC! (usually strongly), R! stalked, R? from near R!, M'! separate ; hindwing rather narrow, 
costa long, apex rounded, termen somewhat rounded, becoming straighter towards tornus, cell about 
one-half, DC rather deeply incurved, C anastomosing to near end of cell, SC? stalked, R* characteristic, 
M! separate. 
Early stages unknown. 
Notable for the curious position of SC? of forewing, which is more primitive than in any other 
I 5 à 
genus except in Group I. When not before R! it arises only just aíter it. 
Type of the genus : Dichroma equestralis, Westwood (1841). 
Geographical distribution of species. — ^. Africa. 
1I. D. equestralis, Westwood. Cape. 
Dichroma equestralis, Westwood, Duncan's Exot. Moths, p.224, t.30, p.1 (1841). 
Argyrophora equestrinaria, Guenée, Spec. Gén. Lép. Vol. 10, p. 232 (1858). 
NorE. — The other species placed by Westwood under this genus, Dichroma Aistrionalis (trofonta, 
Cramer) and arcualis (trofonia ab. ?) belong to the Geometrinae (Boarmiinae). The former, under its synonym 
monelata, Guenée, is the type of Guenée's genus Avgyrofhora, which will stand for the species in question 1); 
the position assigned to it by Guenée, near the genus Conpfsoftera, Blanchard (Ligia, Duponchel, nom. 
praocc.), may likely be correct. Dichroma alternata, Warren, Novit. Zool. Vol. 8, p. 209, is Larentiid, 
close to Conchylia; Weymer, Deutsche Ent. Zeitschr. 1908, p. 512, proposed for it (under the synonym 
argenteofasciata) the genus Callythria. 
147. GeNUS ARGYROGRAPHA, NOV. GEN., PROUT 
Argyrographa, nov. gen. Prout. 
Characters. — Face smooth. Palpus in cf moderate, second joint rough.scaled above and 
beneath, reaching well beyond frons, third joint minute (Q unknown). Tongue slender. Antenna in gr 
bipectinate with moderately long branches, apical part nearly simple. Pectus and femora hairy. Hind- 
tibia and tarsus in c rough-scaled, tibia not dilated, all spurs present, tarsus as long as tibia. Abdomen 
not crested. Frenulum in & slender and colourless, from before basal expansion. Forewing with costa 
very feebly arched, apex rather acute, termen smooth, oblique, curved posteriorly, cell fuily one-half, 
DC somewhat incurved, SC! from cell, sometimes anastomosing with C, SC? from close after R!, 
anastomosing with SC!, R! short-stalked, M! separate; hindwing with costa rather long, apex rounded, 
termen gently rounded, tornus rather pronounced, cell one-half, DC somewhat incurved, C approximated 
to cell to about one-half, rather gradually diverging, SC? stalked, M! separate. 
Early stages unknown. 
1) Kirby, Zazdb. Lep. Vol. 5, p. 243, says of rgyropAora « nom przocc. », but wecannot find that this is the case: probably he was con- 
founding it with ArgyroeZorus, Blanchard, 1852. 
