404 
IOLAUS. By Dr. C. Aurivillius. 
alicnus. 
arborifera. 
aphnaeoi- 
cles. 
diameira. 
aemulus. 
I. alienus Trim. (69 b). Frons white, above in the middle with black or reddish-yellow scales. Legs 
white. Beneath white, at the margin almost as far as the submarginal line darkened by a blackish grey; sub- 
marginal line fine blackish, postdiscal line blackish, on the forewing often indistinct and on the hindwing broken 
up into streaks, on both wings very much thickened at the costal margin, forming two jet-black spots situate 
in 6 and 8 on the forewing, in 6 and 7 on the bindAving; forewing besides at the end of the discal cell 
with a large, quadrangular double spot covering the base of the areas 4 and 5; hindwing with tAvo small tails, 
at the anal angle extended triangularly; anal lobe on both sides white with a black, green-scaled punctiform 
spot, but without any red scales; a black submarginal spot being at least below proximally scaled reddish-yelloAv 
in area 2. <$. Forewing above at the costal margin as far as the cell, at the apex very broad and at the distal 
margin 4 mm broad black, otherwise light blue; hindwing at the costal margin as far as vein 6 black and 
Avith a fine, black marginal line. The $ deviates above by the blue basal area of the forewing being distally 
in the areas 1 b to 4 white, and by the transverse lines of the hindwing beneath being distinct also above. Ma- 
shuna Land and German East Africa near Kigonsera. 
Seventh Group of Species. 
The beautiful species of this group are discernible from all the others by both Avings beneath showing 
a broad orange or red-brown basal band. In addition the transverse streak at the end of the discal cell of 
the forewing and the postdiscal bands of both Avings are also very broad and orange or red-brown. Both 
wings besides generally with a similarly coloured marginal band. Frons orange. Hinchving at vein 3 angular 
or tailed. Abdomen beneath with a yellow longitudinal line. 
Review of the Species. 
A. Submarginal line of both Avings beneath broad, coherent and reel-brown. Hindwing beneath with a red- 
broAvn longitudinal band bordered with black from the base along vein 1 b to the submarginal band. 
I. arborifera. 
B. Submarginal line of both wings beneath represented by black dots or streaks. 
a. Hindwing beneath before the proximal margin in 1 b with a broad orange longitudinal stripe extending 
from the base to the postdiscal band. Basal band of hindwing beneath from the costal margin to the 
middle of vein 2 coherent. Wings in the $ above partly white. 1. aphnaeoides. 
[3. Hindwing beneath without a longitudinal stripe in area 1 b, its basal transverse band is short and only 
consists of a transverse streak between vein 8 and the median and of a spot in 1 a. Wings in the $ above 
devoid of white. I. aemulus. 
I. arborifera Btlr. (69 a). <$. Forewing above of a bright light blue; the costal margin, apex and 
distal margin broad black; the blue area anteriorly and distally rounded; hindwing above blue with a black 
marginal band of 2 mm width, at the costal margin in 6 and 7 white; mealy spot black, round. £ unknown. 
British East Africa: Kikuyu. 
I. aphnaeoides Trim. (69 b). The differs but little above from that of the preceding species. In the 
$ the hindwing and the centre of the forewing above are white, at the base both wings are darkened and covered 
with a light blue; forewing with a black transverse spot at the end of the discal cell; hindwing with a black 
postdiscal and submarginal line; the latter broken up into spots. South Africa from Cape Colony to Njmssa- 
land. - —- diamefra Karsch (69 a) is considered by Ham. Dkuce not to differ from aphnaeoides. Although I do 
not possess sufficient material in order to come to a final decision as to this question, I am inclined to consider 
diametra as the north-eastern race. The $ seems at least to differ from the principal form by both wings above 
being of a purer white with more distinct black markings and with less blue; the black transverse spot at the 
end of the discal cell of the forewing is triangular and pointed. German East Africa : North Usambara and 
on Mount Meru. The transverse markings beneath are yellowish-brown instead of light orange in the principal 
form. 
I. aemulus Trim. (68 h). <$. Forewing above black, in the basal part light blue; the blue colour scarcely 
reaches the cell-apex and vein 4; hindwing above light blue, at the costal margin as far as vein 6 blackish-grey 
with a fine black marginal line and black submarginal spots in 1c and 2; anal lobe white pupilled with 
black; areas 1 a and 1 b white or grey. In the $ the blue colour above is darker and at the base tinged with 
a blackish grey; the black colour is more extensive at the costal and distal margins. Natal to German East 
Africa. 
Eighth Group of Species. 
The only species belonging hereto differs from all the others by the colouring. Hindwing only with 2 
small tails Avhich are uni-coloured black. 
