CHIONOPSYCHE. By Dr. C. Aurivillius. 213 
The latter, however, differs in the long palpi from Opistodontia. The Ethiopian species form two natural groups. 
Stages and habits unknown. 
First Group. 
Distal margin of forewing uniformly bent, entire or feebly undulate. Hindwing between the veins 2 and 0 with a 
darker, proximad distinctly defined marginal band. 
0. darmfelti Auriv. (29 b). Red-brown. Forewing above with two indistinct darker transverse lines, dannfelli 
an antemedian one and a postmedian one, and at the apex with rather indistinct dark brown submarginal spots 
filled with grey. Hindwing with a small discal dot and a distinct postmedian, almost straight transverse line 
of a dark brown colour; marginal band violettish-grey. Congo District. 
0. amoldi Auriv. (29 b). A- Wings above with a yellowish ground-colour and dentate black transverse arnoldi. 
lines the arrangement of which is shown in the figure. The marginal band of the hindwing is coloured and 
shaped almost as in dannfelti, but in the centre of each area with a black dot. Discovered near Bascho in North- 
West Cameroon by Dr. Arnold Schultze. 
0. superba Auriv. (29 d). $. This large beautiful species differs rather considerably from the two superba. 
other species of this group. The wings above show a light orange or golden yellow ground-colour with violet 
markings; the violet marginal band of the hinclwing is not ecpially broad, but anteriorly narrower. The exact 
figure makes it superfluous to describe it at large. Captured by the well-known English natural philosopher 
S. A. Neave in Nyassa Land near Mlanje. 
Second Group. 
Distal margin of forewing dentate, between the veins 2 and 5 emarginated and angular at them. Hindwing 
without a darker marginal band, between the veins 2 and 6 emarginated. 
0. demtata Auriv. (29 c). <$. Forewing above greyish-brown, at the hind-margin broadly brownish- dentaia. 
yellow (as far as vein 3); two indistinct transverse lines and a small discal dot blackish. Hindwing blackish- 
grey, at the base of the costal margin and at the hind-margin reddish, beneath at the hind-margin somewhat 
lighter; fringes reddish. Gabun. 
A d d i t i o n. 
In 1915 Bethune-Baker described a Lasiocampida as ,,Gastropacha“ bicrenulata from North-Eastern bicrcnulat 
Rhodesia, the systematic position is quite unclear. No other species of Gastropacha is known from the Ethiopian 
Region, and it is therefore improbable that B. -Baker’s species belongs to this genus. But as the description 
does not supply any help for the determination of the genus, I can merely mention the species here and 
recapitulate the description. Head, thorax, abdomen, and both wings dust-coloured. Forewing with an 
irregular, interrupted, subbasal transverse line and a fine, strongly dentate, dark postmedian line which is 
extended towards the margin at the veins 6 and 7. Hind wing somewhat darker than forewing and with a dentate 
postmedian line. Both wings with a dark dot at the end of the discal cell. Expanse of wings: 72 mm. 
5. Subfamily: Chionopsychinae Auriv. 
This subfamily initiates the genera in which vein 7 of the hindwing rises near the base of the wing and 
touches vein 8 or is united with it in one place or for some distance. The basal cell being formed thereby is 
small, much smaller than the discal cell and without accessory veins. The Chionopsychinae differ from all 
the other subfamilies in vein 5 of the hindwing rising almost in the middle between veins 4 and 6. Discal cells 
closed. But one genus. 
1. Genus: Auriv. 
Palpi well developed, projecting a little beyond the frons. Eyes bare. Antennae of $ as far as the apex 
with two rows of pinnae. Legs unarmed; hind tibiae with four long spins. Wings short and rounded off; margin 
strongly bent. Porewing with 12 veins: vein 2 near the base, 3 to 5 from the anal angle, 6 from the apex 
of the cell, 7 and 8 forked, 9 and 10 also forked near the apex of the cell, 11 separately behind the centre 
of the cell. Hindwing with 8 veins: vein 2 a little behind the centre of the cell, 3 and 4 from the anal angle 
and 6 from the apex, of the discal cell. Vein 8 rises separately from the base, but it is at once closely 
adjacent to vein 7 for some-distance, forming a small and narrow basal cell. Abdomen of $ with an anal pencil, 
projecting little beyond the hindwing. 
