LACHNOCNEMA. By Dr. C. Aurtvillius. 
363 
By the marking on the hindwings beneath the species are easily discernible from all the others; they 
exhibit there several brown or blackish spots arranged in transverse rows, strewn or encircled with lustrous, 
silvery or lead-coloured scales. The are above uni-coloured dark brown or blackish-brown, the $$, however, 
in the disc of both wings more or less whitish or yellowish. The species are closely allied to each other and as 
yet incompletely known. 
The larvae are carnivorous, living on Homoptera-larvae, and are accompanied by ants. 
Review of the Species. 
A. Small species with an expanse of wings of 15 to 30 mm. 
a. Median transverse band of hindwing beneath irregular, at the costal margin expanded, sometimes 
broken up into spots or entirely absent. 
*. Median transverse band of hindwing beneath complete and coherent or only little interrupted. 
The cliscal spots of the hindwing beneath are at least just as distant from the submarginal spots 
as from the discal spots. 
f. The discal spots of the hindwing beneath are arranged in a coherent, almost straight or 
slightly bent row between the proximal margin and vein 6. — $. Both wings above with 
a large or small, white, well defined discal area; forewing at the end of the discal cell with 
a large, rectangular, black median spot. L. bibulus. 
|f. The discal spots of the areas 2 and 3 on the hindwing beneath are situate much nearer at 
the base than those of the areas 4 and 5; the row is thereby interrupted or very much bent 
like an S. — <$. Wings above lighter brown. — $. Both wings above brownish-grey, in 
the middle somewhat lighter, but without a light area; forewing only with a small streak- 
shaped discal dot. L. durbani. 
**. Median transverse band of hindwing beneath absent and only represented by a spot at the costal 
margin and another on the transverse vein of the discal cell. The discal spots are situate much 
nearer at the submarginal spots than at the discal cell. — $. Hindwing above as far as the costal 
margin and almost to the base white with a black marginal band of about 3 mm width. 
L. exigua. 
[3. Median transverse band of hindwing beneath straight and almost ecpially broad. The discal spots 
of the areas 1 c to 5 in the middle between the median band and the submarginal spots or nearer 
at the median band. — $. Wings above dark with a small square whitish spot near the base of the 
areas 4 and 5 of the forewing. L. brimo. 
B. Larger species with an expanse of wings of 38 to 46 mm. 
oc. $. Forewing above with a white longitudinal spot covering the posterior margin of the discal cell 
and the base of the areas 1 b to 3. Hind wing above with a broad white transverse band from the 
proximal margin to vein 6. L. magna. 
L. busoga. 
(3. $. Both wings above behind the apex of the discal cell with a yellow transverse band which on the 
forewing does not cover the base of the areas 2 and 3. L. reutlingeri. 
L. buna. 
L. bibulus F. (= emperamus Snell.) (65 g). Both wings above uni-coloured dark brown without blbuiua. 
any markings; fringes of hindwings very undulatingly edged; wings beneath with a greyish-brown ground¬ 
colour and deep red-brown spots strewn with silvery scales, which are arranged as in the °. •— 2. Both wings 
above with a white discal area or a transverse band extending from the proximal margin to vein 6 or sometimes 
only covering the base of the areas 4 and 5, in which case the areas 1 c to 3 are more or less covered with a 
greyish blue; at the end of the discal cell on the forewing always a large angular black spot. Beneath the wings 
are white in the middle and exhibit the same dark spots decorated with silvery scales, by which all the 
species of the genus are distinguished; their arrangement may be seen from the figures. Lamborn discovered 
the larva in Nigeria living on larvae of a Homoptera, Ossana bicolor Dist., but he does not describe it. Nigeria 
to the Cape Colony, East Africa and Uganda. 
L. durbani Trim. (65 g). The is very much like the <$ of bibulus , but above somewhat lighter and durbani. 
beneath distinguished by the marks stated in the review. The $ is above light brownish-grey, somewhat darker 
at the margins; the forewing only shows a small black dot at the end of the cell; beneath as in the U- Cape 
Colony to Brit. East Africa. 
