506 
PYRRHOCHALCIA; RHOPALOCAMPTA. By Dr. C. Auriyillius. 
iphis. 
ju no. 
*. Vein 5 of the forewing rises somewhat nearer to 4 than to 6, rarely almost in the middle between 
the veins, in which case, however, the transverse vein (the middle discocellular) is bent between the 
veins 5 and 6 or relatively short. 3. Heteropterinae. 
**. Vein 5 of the forewing rises exactly in the middle between the veins 4 and 6 or nearer to 6. The 
two transverse veins (the middle and lower discocellulars) between the "veins 4 and 6 form a straight 
line and are longer than in the preceding subfamily. 4. Hesperiinae. 
The subfamilies stated here according to Mabille are not sharply separated, as vein 5 of the forewing 
does not remain quite constant in certain genera and species. This is particularly the case in the second and 
third subfamilies, because it is often difficult to decide whether vein 5 is quite straight or in the beginning 
somewhat bent. We therefore advise to look in the review of the genera of the two subfamilies for a species 
appearing doubtful as to the formation of vein 5. 
1. Subfamily: Ismeninae. 
Antennal club elongate, slightly thickened, with a longish, more or less turned down apical part. Vein 
5 of the hindwing is absent in the Ethiopian genera, or very feebly developed. No hyaline spots at all. 
Large species, the hindwing at the anal angle more or less extended or broadly lobate. 
Only two African genera. 
1. Genus: lPyrrlioelialcia Mob. 
Distinguished from the followdng genus merely by vein 3 of the hindwing rising before the posterior 
angle of the discal cell and by the anal lobe of the hindwing being a little broader, shorter, and more rounded 
off. Sexes different. Head, palpal joints 1 and 2, collar, and at least the three last ventral joints with orange- 
red hair. Wings beneath metallic green with blackish-blue margins and veins. 
P. iphis Drury (75 h). Collar only at the anterior edge, and abdomen only on the three last ventral 
joints with orange-red hair. —• <$. Thorax, abdomen and wings above uni-coloured black with a dark blue 
reflection. —- The $ differs from the by both wings above showing large, oblong, green-scaled antemarginal 
spots. It attains an expanse of wings of 66 to 88 mm and is the largest of all the Hesperidae known. Larva 
polyphagous, occurring in the primeval forest, velvety brown, slightly warming into violet, with numerous 
yellow spots and a red head. Pupa of a lustrous yellowish (?) with black markings; at the anterior edges of 
the mesodorsum, and at the head there is one obtuse, red-brown projection each; the anal apex ends with two 
long, rectangularly projecting branches. Sierra Leone to the Congo District. 
P. juno Plolz (75 h) only differs from iphis by its smaller size, shorter third palpal joint, the ventrum 
being red-haired for the greatest part. $ unknown to me. Gold Coast. 
2. Genus: IfcllopalOcampta Wallengr. 
Vein 3 of the hindwing proceeds from the posterior angle of the discal cell. Sexes almost similar. 
Review of the Species. 
A. Under surface of hindwing uni-coloured without spots or other markings, with darker veins and light 
fringes at most. 
a. Head, palpi, and abdomen beneath orange-red. Both wings beneath with a dull blackish-blue ground¬ 
colour. Rh. aeschylus. 
(3. Palpi white or grey with black longitudinal lines. Ventrum white or yellowish. 
*. Fringes of hindwings from the anal angle almost to vein 2 orange, then blackish. Hindwing above 
for the greatest part clothed with brownish-yellow hair. Rh. ratek. 
**. Fringes of hindwings white or whitish. Both wings above of a uni-coloured greyish brown or blackish 
brown. Rh. libeon. 
B. Under surface of hindwing with distinctly prominent markings. 
a. Hindwing beneath with a white or light yellow spot or a similar transverse line. 
