RHINOBOMBYX; LEIPOXALS. By Dr. C. Aurivillius. 
24 7 
light yellowish. Thorax in front only little lighter than in the middle, in front with a darker longitudinal stripe. 
Expanse of wings: 77 mm. unknown. Spanish Guinea. 
18. Gattiing: JfcliinobomUyx Auriv. 
Eyes hairy. Palpi long, porrect, pointed like a beak. Wings in the $ almost entire, in the $ distinctly 
undulating. Eorewing of short and broad, with an obtuse or rectangular apex and a strongly curved distal 
margin, in the $ much longer, tapering, and with a feebly curved distal margin. The costal margin of the 
hindwing in the middle with a deep rounded indentation. The peculiarities of the neuration have been mentioned 
above in the table of genera (p. 215). 
Rh. cuneata Auriv. (= ziczac Strd.) (34 b). Abdomen and wings grey, in the much darker than cuneata. 
in the $; costal margin of hindwing, basal portion and distal margin of forewing darker coloured. Eorewing 
above with a small black discal dot being centred white in the d, and three fine black transverse lines, the 
two proximal ones of which are indistinct or may be absent in the whilst the third is very long and sharply 
dentate and always distinct. Damara Land, Matabele Land, Transvaal, German East Africa. 
19. Gattung: T^cigioxais Holl. 
Leipoxais is closely allied with Rhinobombyx, but easily discernible by the neuration and the costal 
margin of the hindwing. It corresponds, however, so closely with the palearctic genus Odonestis (type: pruni L.) 
that I should feel inclined to combine the two genera. Nevertheless it is advisable to postpone such a com¬ 
bination, until the stages of development of the African species have been discovered. 
The ($3 are much smaller than the their forewings are shorter and broader, with a straight erect 
distal margin and an obtuse or rectangular apex. In the $$ the forewing, however, is longer with a distinct, 
often falciform apex and a slanting, straight or concave distal margin. Antennal pectinations in the only 
moderately long, in the $ shorter and more ecpially long. Eyes hairy. The marking of the forewing above 
consists of two usually double transverse lines, the first of which is subbasal and extends within the apex of 
the cell, whilst the second crosses the centre of the wing, both being rather erect; almost midway between the 
distal transverse line and the distal margin extends the irregularly curved submarginal line being often broken 
up into spots. The hindwing is of a variable shape, whereby the species can be distinguished. Another remark¬ 
able fact is that vein 11 of the forewing soon joins, vein 12 to which it is closely adjoined, in nearly all the 
species I was able to examine. 
In order to facilitate the determination, I divide the species into three groups. 
Table of the groups of species. 
A. Costal margin of hindwing between the base and the apex of vein 8 quite straight or somewhat concave. 
*. The costal margin of the hindwing forms at the apex of vein 8 a distinct though obtuse angle, and 
the distal margin is between the veins 6 and 8 quite straight or even somewhat emarginated. 
First group of species. 
**. The costal margin of the forewing is at the apex of vein 8 entirely rounded off and is continued into 
the curved, distal margin without any boundary. Hindwing more elongate. 
Second group of species. 
B. Costal margin of hindwing in the middle very deeply emarginated. Third group of species. 
First Group of Species. 
L. peraffinis Holl. (34 b, 35 d). Body and wings red-brown; forewing generally at the distal peraffinis. 
margin broadly grey; hindwing with a broad blackish-brown marginal band or almost quite blackish. Forewing 
with blackish transverse lines; the subbasal line curved, distally convex; the discal line double, its proximal 
line distinctly undulating or angular, the distal line indistinct, brown; the submarginal line formed of black 
spots, irregularly curved; a white dot at the end of the discal cell. Forewing beneath almost as above; 
the subbasal and discal transverse line, however, are absent or indistinct. Hindwing beneath grey or greyish- 
brown, at the hind-margin often whitish, with two dark transverse markings, a proximal red-brown band 
being in the centre often interrupted, and a submarginal line formed of black separate spots. — The $ 
is much larger (expanse of wings about 56 mm) and shows above a red-brown ground-colour; the marking of 
the forewing only differs in the white discal spot being strigiform, the distal portion of the discal band broad, 
brown and distinct, and the submarginal spots distally bordered with whitish-grey. Cameroon to Gabun. — 
