PENTILA. By Dr. C. ArmviLLirs. 
of the forewing is very broad, 4 to 5 mm, black. The dark marginal band of the hindwing about 
2 mm broad. P. sylpha. 
**. The dark costal-marginal stripe of the forewing gradually passes over into the apical spot and docs 
not form a spot at the end of the discocellular. 
1. Costal margin, apex and border of the forewing very broadly black. P. ntebi. 
2. Costal-marginal stripe of the forewing narrowly black. Border of both wings very narrowly or 
on the hindwing scarcely black. P. iirza. 
(S. Wings unicolorouslv white without markings, only at the base of the costal margin of the forewing some¬ 
what darkened. P. par adorn. 
The wings are in all the species on both sides similarly marked and coloured, white with black markings. 
The markings have been described in the Review and have therefore not been repeated in the species. 
P. peucetia Heir, (61 i). East Africa from the Delagoa Bay to Mombasa. Comp, above. 
P. kirbyi Auriv. (61 i). Cameroon. Comp, above. 
P. niuhata Deir. (01 i). Cameroon to the Southern Congo District. Comp, above. 
P. sylphida Stgr. (01 i). Cameroon to the Kuilu River. Comp, above. 
P. perfragilis Holl. is unknown to me, but according to the description it seems scarcely to differ 
from sylphida. The description runs: ..Upper surface: antennae, head, thorax and abdomen black; wings 
transparent, white; costal margin and border of the forewing rather broadly, border of the hindwing only very 
narrowly black; a round black spot at the end of the discocellular of the hindwing. Under surface entirely 
like the upper surface; legs red.“ Ogowe. If sylphida and perfragilis are the same species, it must be called 
perfragilis, because the latter was described as sylphida a year before. 
P. sylpha Ky. (61 i) is very much like P. kirbyi and differs nearly only by the absence of the median 
dot of the hindwing. 
P. ntebi Baker. Uganda. Description comp, above. 
P. tirza Heir, corresponds to P. sylphida from which it deviates by the absence of the median dot 
of the hindwing. Gabun. 
P. paradoxa Ham. Druce (63 c) is the most plainly marked of all the Pentila- species, since all the 
black markings have disappeared. Cameroon. 
2. Group: Liplenini. 
In the genera of this group the precostal vein of the hindwing is entirely absent, 
fn order to facilitate the review of the numerous genera, I distribute them on two groups. 
First Group of Genera. 
The footstalk of the veins 7, 8 (and 9) of the forewing rises from the apex of the discocellular and is 
not at all separated from the vein 6 or only by a very short, almost vertical upper discocellular vein. Vein 6 
may even rise from the footstalk of 7 to 9. 
R e v i e w of the Gene r a. 
I. The veins 6 and 7 of the hindwing petroled. The veins 3 and 4 of the hindwing always separated. Vein 
6 of the forewing from the footstalk of 7 to 9 or 7 to 8. 
A. Wings entire-margined or with a uniformly undulated margin. 
a. The forewing with 12 veins, of which veins 10 and 11 nearly always rise separately from the costal 
margin of the discocellular. 
*. The discocellular of the hindwing small and short, not reaching the middle of the wing. Vein 
peucetia. 
Jcirhyi. 
muh ala. 
sylphida. 
perfragilis. 
sylpha. 
ulehi. 
lirza. 
paradoxa. 
