CHIONOPSYCHE. By Dr. C. Aurivillitjs. 
montana. 
grisea. 
214 
Ch. montana Auriv. (29 c). Snow-white; forewing above almost in the centre with a transverse row 
of 10 black spots extending from the anal margin to vein 9. Hindwing uni-coloured without markings. Antennal 
shaft whitish, pinnae yellowish. Eye-circle and prothorax with blackish hair. Palpi blackish-brown, at the 
tips more or less orange-yellow. Legs yellowish with black rings; middle and hind tibiae above clad with long 
snow-white hair. $ and stages unknown. East Africa. Kilima-Njaro. 
Ch. grisea Auriv. is closely allied with Ch. montana. Body and wings light grey; forewing above 
with an irregularly bent transverse row of small black dots which, however, are absent in the areas 1 and 2. 
Palpi for the greatest part orange. Legs coloured and marked as in montana. Expanse of wings: 38 mm. British 
East Africa on the Juba River, 
6. Subfamily: Lasiocampinae. 
To this subfamily belong most of the Ethiopian Lasiocampidae. They are distinguished from the others 
by the basal cell of the hindwing being small, often much smaller than the discal cell, without or only with 
feeble accessory veins, and being formed by vein 7, which proceeds near the base of the wing at about the 
centre of the discal cell, forming with vein 8 a longer or shorter anastomosis or being united with it by a short, 
almost vertical cross-vein. Discal cell of fore wing generally closed (except Laeliopsis). By the small basal 
cell of the hindwing the genera of the Lasiocampinae can at once be distinguished from those of the following 
subfamily (Gonometinae). Only in the genus Braura the basal cell is somewhat larger and in its formation it 
forms the transition between the two subfamilies. 
T able of Gener a. 
1. Vein 8 of hindwing proceeds separately from the base of the wing, but soon unites with the anterior edge 
of the discal cell and then either proceeds from the same place as vein 7 or it is fused with it for some 
distance, in which case the veins 7 and 8 consequently are forked. The discal cells of both wings are closed. 
A. Eyes bare. Veins 7 and 8 of forewing on a short fork from the apex of the discal cell 
1. Trichiurana. 
B. Eyes hairy. Veins 6 and 7 of forewing forked; vein 8 separately from the apex of the discal cell. 
Trichiura. 
TI. Vein 8 of hindwing is never united with the anterior edge of the discal cell, and the basal cell thus reaches 
at least to the beginning of vein 7. 
A. Discal cell of hindwing open or only partly and indistinctly closed. 
t- Discall cell of forewing open. 2. Laeliopsis. 
ff. Discal cell of forewing closed. 
a. Anterior tibiae short, at the apex with two spines. $ without wings. 3. Me-socelis. 
[i. Anterior tibiae of normal length, unarmed. $ with fully developed wings. 
*. Veins 9 and 10 of fore wing much shorter than their joint pedicle. $ with anal wool. 
1. Distal margin of hindwing entire. Vein 9 of hindwing terminates into the costal margin 
or the apex of the wing. 4. Lechriolepis. 
2. Distal margin of hindwing undulate. Vein 9 of hindwing terminates into the distal margin 
5. Trabala. 
**. Veins 9 and 10 of forewing longer than their joint pedicle. $ without anal wool. 
1. Vein 7 of forewing is shortly forked with vein 8, and vein 9 terminates into the costal 
margin or the apex of the wing. (5. Closterothrix. 
2. Vein 7 of forewing is forked with vein 6, and vein 9 terminates into the distal margin 
or apex. 7. Craspia. 
B. Discal cell of both wings closed. 
a. Distal margin in both wings entire or u n i f o r m 1 y undulate, rarely dentate. 
*. Costal margin of hindwing uniformly bent or almost straight, neither emarginated in the centre 
nor forming an angle at the apex of vein 8. Apex of forewing never falciformly bent. Palpi never 
rostriformly projecting nor coniformly pointed. 
