XANTHETIS; THUMATHA; OPSAROA. By Dr. A. Seitz. 
A. fulvia Hmps. (8 1) is somewhat larger, like the preceding species yolk-coloured, but in the costal julvia. 
part of the forewing and in the apical part of the hindwing it is tinged reddish. In the forewing an antemedian 
row of dots, in the centre a nebulous stripe, and a postmedian dentate stripe are dark; between them 
scattered dots. Natal. 
A. obliterata Wkr. (= indecisa Wkr., rufostria Plotz, crenulata B.-Bak., xantha B.-Bak.) (8 1) has instead obliterate. 
of the fine transverse lines thicker but more red-brown transverse stripes: 2 in the basal part of the forewing, 
1 deeply dentate stripe in the centre, 1 irregular antemarginal stripe. -— The form hieroglyphica B.-Bak. (= gabu- 
nica Holl.) differs in the veins. West Africa. 
A. pectinella Strd. (= pectinata Hmps.) (8 m). Forewing and hindwing deep dark yellow; in the forewing peciinella. 
the transverse stripes entirely disappear towards the hind-margin or become quite indistinct. West Africa. 
A. atricraspeda Hmps. (8 m). In this very small imago the antemedian and the median dentate bands atricraspe- 
of the forewing are contiguous and the two postmedian ones likewise touch each other several times, whereby 
islands of the deep yolk-coloured ground-colour are produced. West Africa. 
A. sagenaria Wallgr. (= natalensis Wkr.) (8 m) is much larger than the preceding ones (expanse of sagenaria. 
$ more than 30 mm). The antemedian line touches the median line on the median vein; the two distal dentate 
lines are contiguous. From German East Africa to the south as far as Cape Colony. 
A. hyporhoda H?nps. (8 m) is smaller and paler yolk-coloured than the preceding species. The ante- hyporhoda. 
median and median transverse lines as in sagenaria , but in the distal area only a slightly dentate dark transverse 
stripe, behind it a black subapical dot. Hindwing whitish. Sierra Leone. 
A. numida Holl. (8 m) is larger; body and wings white, forewing in the disc suffused with a purple numida. 
pink. The dentate stripes are scanty, partly broken up into small spots. West Africa. 
A. Clara Holl. Light cream-coloured; in the forewing a small black basal dot, a series of 3 dots near elara. 
the base; a pale brown median dentate transverse line and a somewhat broader, very irregular distal one behind 
the cell-end, and a series of blackish marginal spots. Expanse of wings: 10 mm. West Africa. 
22. Genus: Xantlietls Hmps. 
This genus is described in Vol. X, where the diagnose is found on p. 159. In addition to luzonica figured 
there (pi. 17 c), there occur also 2 African species. 
X. ichorina Btlr. (8 m). The pale yellow forewing is distally intensely tinted red, as in many species ichorina. 
of the genus Miltochrista. In the forewing dull dots are arranged in transverse chains. Hindwing dull whitish, 
at the costa and apex tinted red. Natal. 
X. spurrelli Hmps. Of the same size as ichorina, but of a pale yellow colour; the darker transverse spurrelli. 
chains are increased, but often broken up into small diffuse patches, spots, and dots, and not so distinctly separated 
but more confused. Gold Coast. 
23. Genus: Tliiiniatha Wkr. 
As to the genus cf. Vol. X, p. 159. The species treated there: 
Th. fuscescens Wkr. (= infantula Saalm., rava Luc.) (Vol. X, pi. 17 c) is one of the smallest Lithosiidae, fuscescens. 
with an expanse of 16 mm, pale yolk-coloured forewings and bone-white hindwings; widely distributed over South 
India, Ceylon, and Australia, from there over Madagascar to West Africa. 
Th. inconstans Btlr. (8 m). Orange, body black with some yellow hairing and an orange-yellow anal inconstans. 
tuft. Forewing orange, at the base darkened, the costal margin, hind-margin and distal margin as well as a 
discal spot being black; hindwing with a dark discal dot. — In ab. delimbatula Strd. (= ab. 1 Hmps.) the forewing delimbatu- 
lacks the black marginal band; —■ in limbatula Strd. also the hindwing shows a dark distal band, but no distinct . 
central spot. Nyassa Land. 
24. Genus: Opsaroa Hmps. 
Easily discernible from the preceding genus by the $ exhibiting very long pinnate antennae and very 
broad hindwings. Proboscis absent. Anterior tibiae with an appendage at the base, being much longer than the 
tibia itself. But 1 species: 
0. fulvinota Hmps. Expanse: 22 to 24 mm. Forewing greyish-brown, with a yellowish-red discal fulvinota. 
spot in which there is a black cell-end dot; also in the submedian area there is a yellowish-red longitudinal 
patch. Hindwing orange with a broad brown margin; the end of the abdomen is also yellow. Cape Colony. 
