exigua. 
brimo. 
magnet.. 
diver gens. 
busoga. 
reutlingeri. 
luna. 
364 LACHNOCNEMA. By Dr. C. Atjeivtllius. 
L. exigua Roll. (65 g) is known only in the female. Forewing above black with a large, white spot 
on the posterior margin, reaching anteriorly narrowed to vein 6; hindwing above white with a black marginal 
band of 3 mm width. Wings beneath almost white; forewing at the costal and distal margins darkened and 
with the usual silvery spots, though without a dark discal dot; hindwing with three silvery spots at the costal 
margin and behind the middle with discal spots in 1 c to 5, which are situate close in front of the submarginal 
dots; the other spots are absent or there are only faint traces of them. On the Ogowe and Kuilu Rivers. 
L. brimo Karsch. (= sudanica Auriv.) (65 g). Fringes of forewing scarcely undulate, white with 
dark spots at the ends of the veins. <$. Wings above uni-coloured dark brown. $. Forewing above with a 
small, light spot behind the apex of the cell. Beneath distinguished by the marks stated in the review of the 
species. Togo and Nigeria. 
L. magna Auriv. (65 g). (= umbra Smith). Wings above uni-coloured blackish-brown without 
markings; fringes of forewings deeply undulate, almost dentate; beneath with a brown or yellowish-brown 
ground-colour and the usual red-brown spots covered with silvery scales; the discal spots of the hindwings 
irregularly arranged and approaching the margin. The $ (= nivens Ham. Druce) is described in the review 
and easily recognizable by the sharply defined, white areas above. Cameroon and Congo District. 
L. divergens Gaede (65 li) has remained unknown to me. The description says: ,,Somewhat smaller 
than L. magna Auriv. and above not different from it; beneath somewhat lighter brown and at once distinguishable 
from magna or other similar species by the bands of the hindwings being differently arranged; in divergens 
the most distal of the three spots extends at the costal margm at vein 6 between the median and distal bands, 
whereas in magna it is situate on the median band. Expanse of wings: 30 mm.“ As we do not yet know the 
limits of variation in the species of Lachnocnema and especially in magna, it is impossible to say whether divergens 
is a distinct species or only an aberration of magna. In bibulus the position of the said spot is variable. Came¬ 
roon, captured by Dr. Mildbraed near Dengdeng. 
L. busoga Baker is described according to a $ and seems scarcely to deviate from the $ of L. magna 
(65 g). The description at least does not mention any important differences: ,,Both wings blackish-brown 
with a large white discal area; forewing with the white area beginning almost at the base, clistally quickly 
expanded as far as the last quarter of the wing and extended from vein 1 almost to the costal margin of the 
cell; hindwing with a very large white area extending from the proximal margin to vein 6 and from the middle 
of the cell almost to the margin. Forewing beneath white with a brown, broad costal and distal margin; a small 
spot before the apex, posteriorly accompanied by a larger, slanting spot; costal margin and apex with groups 
of silvery scales. Hindwing beneath white, at the costal margin as far as the last quarter with a very large, 
sharply defined, almost square spot showing in the middle a slanting white streak; at the base 1 or 2 white 
spots curled silvery brown, and in the middle a transverse row of similar spots; an indistinct postmedian row 
of 4 or 5 similar spots; margin broadly darkened. Expanse of wings: 46 mm.“ Busoga. 
L. reutlingeri Holl. (65 h). $ unknown. In the $ the wings are above blackish-brown with a pale 
yellow median transverse band extending from vein 1 to vein 6 of the forewing and from vein 1 c to vein 6 
of the hindwing; the transverse band of the forewing is narrowed in the areas 2 and 3 and does not cover 
the base of these areas, the transverse band of the hindwing is about 4 mm broad. The marking beneath is 
most distinctly to be seen from the figure. Benita. -— luna Ham. Druce (65 h) only deviates by the transverse 
bands above being darker yellow and that of the hindwing being 6 mm broad, and it is probably only a variation 
of reutlingeri. Cameroon. 
Third Group of Genera. 
The forms of this group are very easily discernible from all the other Lycaenids by the formation of 
the hindwings which, at the anal angle at the end of vein 1 c, exhibit a distinct lobe turned backward, but no 
small tail; at the end of vein 2, however, they are tailed and at the veins 3 and 4 more or less dentate, angled 
or tailed. 
In the neuration all the species agree; the forewing has only 11 veins, vein 9 being absent; vein 5 rises 
in the middle between 4 and 6; the latter from the same place as the footstalk of 7 and 8; 10 and 11 quite 
separately from the costal margin of the discal cell; in the hindwing vein 5 rises in the middle between 
4 and 6, and the veins 6 and 7 are rather remote from each other at their rise. Eyes densely haired. 
Palpi with appressed scales and a thin terminal joint. Antennal shaft thin, often as fine as a hair, with long, 
distinct joints; club circular and long, rather distinctly defined. 
The males are often distinguished by mealy spots or hair-pencils, whereupon several genera have been 
founded. But as the females of these ,,genera“ cannot be distinguished by any marks at all, I regard them 
as subordinate genera or groups of species at most. 
The stages of development are very little known; the larvae have the usual shape of the body of the 
Lycaenid larvae, and sometimes live in the interior of fruits. 
