obliquizona. 
metasonata. 
squamata. 
rohani. 
pyrocera. 
ruficauda. 
rufitibia. 
bicolor. 
532 THYRANTHRENE; NYCTAEGERIA; SURA. By M. Gaede. 
the cell-end and at the distal margin. A black incomplete ring behind the cross-vein, filled with red-brown. 
Before the margin a faded black line. Hindwing blackish-brown, dusted with white. The cell and the space 
below it almost to the inner margin hyaline. $ 20—24 mm. Mashonaland. 
31. Genus: Tliyraiitlireiie Hmps. 
Proboscis stunted. Palpi normal, 1st and 2nd joints in front long-haired. Antennae of $ with distinct 
pectinations. Tibiae and 1st joint of the hind tarsi rather long-haired. Abdomen as in Echiclgnathia. Neuration 
the same. Type: obliquizona Hmps. 
T. obliquizona limps. (77 h). Black, with a blue gloss, with yellow scales. Palpi yellow. Abdomen with 
white lateral streaks. Forewing dark coppery brown with yellow scales. Wedge-shaped area short triangular, 
distal hyaline area close behind the cross-vein narrow and oblicpie. Hindwing narrowly margined with coppery 
brown, cross-vein broad dark. 24 mm. Rhodesia. 
T. metazonata Hmps. Body blackish-brown. The first two palpal joints white and black, abdomen 
with a white and ochreous line on the penultimate segment, anal tuft ochreous and white in the centre. Hind 
tibiae above with pale brown and white hair, tarsi white. Abdomen beneath with brownish-white segmental 
margins. In the forewing another short longitudinal area, behind the distal hyaline area as in obliquizona with 
a row of hyaline white dots before the distal margin. Hindwing hyaline at the costal margin, behind the cell 
and with marginal dots as in the forewing. Fringes of both wings red-brown. $ 26 mm. Natal. 
T. squamata n. sp. (77 h). Body greenish-black. Palpi black-haired, the 3rd joint at the base white, 
patagia in front rusty yellow. Abdomen on the 4th segment with a yellow band, behind finely margined with 
white. At the end 4 lateral tufts, the first and last white, between them 2 black ones, beneath the band is 
almost white. Anterior coxae white. Hind tibiae and tarsi blackish-brown, the latter with white rings, spurs 
white. Forewing unicoloured brownish-black. Hindwing hyaline, cross-vein and costal margin brownish- 
black. $ 26 mm. Nyassa District. Type in the Beilin Museum. 
32. Genus: XyHaegeri?! Le Cerf. 
Proboscis feeble. Palpi hairy except apically. Antennae long, with scarcely thickened ends. Middle 
and hind tibiae hairy. In the forewing veins 2, 3, 4 equidistant, 7 + 8 stalked, 10 and 11 very near to each 
other. In the hindwing veins 3 and 4 from the same place, 3 inner-marginal veins are present. Thorax behind 
and the base of the abdomen with hair-tufts. 
N. rohani Le Cerf. Body sooty black and brownish black. Forewing bronze black, turning yellow 
towards the cross-vein. Costal and distal margins darker. Cross-vein with a roof-shaped marking. Hindwing 
pale ochreous, more densely scaled at the cross-vein in front and at the anal angle. Marginal line bronze black. 
Middle and hind tibiae sooty black, tarsi and spurs yellow. $ 30 mm. Angola. 
33. Genus: Siai*a Whr. 
Proboscis stunted. Palpi normal. Antennal ends thickened. Hind tibiae slightly thickened, bare, tarsi 
short. In the forewing all the veins not stalked, in the hindwing veins 3 and 4 from the same place, 5 from 
the centre of the cross-vein, 7 absent. Type: xylocopiformis Whr. 
All the species with a black body and forewing, with a more or less blue or blue-green metal gloss. 
S, pyrocera Hmps. Antennae and palpi fiery orange. Head, patagia, and anal tuft partly orange. 
Tibiae and tarsi fiery orange. Hindwing with a hyaline band in the cell, below it hyaline as far as the inner 
margin and yet a little behind the cell above and below vein 6. The two last spots may also be absent. $ 
26—30 mm. Central Africa, Delagoa Bay. 
S. ruficauda Bothsch. (77 h). Head and palpi dark brown. The last segment of the abdomen and the 
anal tuft orange-red. Hindwing predominantly hyaline, only between veins 2 and 4 more densely scaled. 
30 mm. East Africa. 
S. rufitibia Hmps. Palpi in the terminal halves in front red-brown. Anal tuft above orange except at 
the base. Hind tibiae above red-brown, spurs white. Hindwing similar to pyrocera. On the inner margin the 
hyaline area only in the middle. £ 40 mm. Niger District. 
S. bicolor Le Cerf (= xylocopiformis Le Cerf). <+ Only the last abdominal segment and the anal tuft 
orange, all the rest glossy green. On the hindwing below the cell a small hyaline spot. $. Abdominal end 
beneath not orange, on the hindwing also in the base of the cell another small hyaline spot. 31—39 mm. Transvaal. 
