400 
IOLAUS. By Dr. C. Aurivillius. 
trimeni. 
scintilla ns. 
mermis. 
tt- Hindwing above in 1 c and 2 or at least in 1 c with a black or red submarginal dot. The 
blue colour of the forewing above covers the cliscal cell and reaches at least vein 4. 
o. The postdiscal and submarginal lines beneath at least as far as vein 3 of the hindwing 
fine and blackish-grey. Forewing beneath at the end of the discal cell generally with 
a fine, dark transverse line. Hindwing with three small tails. 
1. Costal margin of hindwing above black almost as far as vein 6. I. belli. 
2. Hindwing above at the costal margin as far as vein 7 whitish, then blue; vein 7 
and a small apical spot in area 6, however, blackish. I. silanus. 
oo. Forewing beneath between the costal margin and vein 2 with a thick, red postdiscal 
line but without a submarginal line; marginal line thick, orange. Hindwing beneath 
with thick, red postdiscal lines and submarginal lines from the costal margin to vein 
2. Hindwing above outside the mealy spot as far as the costal margin or as far as 
vein 7 blue. I. sidus. 
B. Forewing beneath at the anal margin without a hair-pencil. The blue basal area of the forewing small. 
not occupying half the wing. Mealy spot of the hindwing very large, lustrous white. Hindwing in the 
A with only 2 small tails. I. aethria. 
I. barbara. 
I. mildbraedi. 
I. mirabilis. 
1. trimeni Wallengr. A- Forewing above blue; costal margin (narrowly), apex (very broadly) and 
distal margin black; the blue colour distally defined in the shape of a bow and not quite uniform; costal margin 
at the base narrowly reddish; hindwing above blue, at the base and costal margin black and with a moderately 
large dark mealy spot covering the greatest part of the discal cell; distal margin narrowly, proximal margin 
broadly black; two black submarginal spots near the anal angle. Wings beneath silvery white; forewing unmarked; 
hindwing, however, with a fine black postdiscal line and a still finer reddish-yellow submarginal line terminating 
into a rounded, red submarginal spot of area 2; anal lobe red, distally black with bluish scales; a fine black 
marginal line; the small tail at vein 1 b white with a black median line, that at vein 2 black with a white 
apex. Fringes white, those of the forewings above grey. The $, according to Trimen, resembles the A beneath, 
but above it differs by the blue colour of the forewing being distally more or less whitish and by the blue colour 
of the hindwing terminating about 4 mm before the margin; the broad marginal band formed thereby is 
whitish as far as vein 0, then black, and encloses two rows of 5 or 6 black spots each; in the submarginal row 
the spots of the areas 1 c and 2 are larger and pupilled red; the spots of the postdiscal row are strigiform 
and situate at the distal margin of the blue colour. A rare species hitherto only met with in the Transvaal. 
— Ham. Druce says (Proc. Zool. Hoc. Bond. 1902. 2 p. 118) that trimeni belongs to Epamera. The genuine 
I. trimeni. however, is according to Druce’s system an Argiolaus. It is therefore evident that Druce had not 
the genuine I. trimeni before him. The same is probably the case with the species mentioned by Butler as 
trimeni from the Mashunaland. 
1. scintillans Auriv. (= gazei Ham. Druce) (68 e). Head above, particularly on the antennae orange- 
red, frons white with an orange median line. Wings beneath white; forewing unmarked or with 
indistinct transverse lines, at the margin sometimes faintly hued yellowish; in the E a f the base of the areas 
1 a and lb a large, lustrous, anteriorly rounded, grey spot; hindwing with a fine, separate, black postdiscal 
line between the costal margin and vein 1 a; the submarginal line of it is absent or only represented by some 
red streaks of the areas 4 to 6 and a line in lb; a separate, black spot in 2 close at the margin, anal 
lobe with a large red, and a smaller black spot; the former decorated with violet, the latter with greenish scales. 
In the E the basal part of the forewing above is lustrous blue as far as the costal margin; the blue colour 
reaches the apex of the discal cell and vein 4, it is distally rounded off and (almost) reaches the margin 
at vein 1; in the 2 the blue area is smaller and lighter and distally broadly white. The hindwing in the E 
above between the veins 1 b and 6 beautifully blue with a fine black marginal line being a little expanded at 
the apex, a black submarginal spot in lc and a brown mealy spot with a rounded, blackish-grey surrounding: 
anal lobe red, black and white; areas la and 1 b for the greatest part whitish. In the $ the hindwing is above 
white, at the base somewhat covered with blue, and with two blackish postmedian transverse bands parallel 
to the distal margin. Nigeria to the Sudan. 
I. mermis Hem. Drc. (68 e). E- Forewing above jet-black with a small light blue basal area; the blue 
colour scarcely covers more than the basal half of the discal cell, a minute part of area 2, and reaches the proximal 
margin 3 mm distant from the margin. Hindwing above from the costal margin to vein 1 b and to the fine black 
marginal line light blue with a large, rounded mealy spot, but without other spots; areas la and lb grey, anal 
lobe white with a small red and black spot. Wings beneath white with blackish-grey postdiscal and submarginal 
lines; these are on the hindwing thickened from vein 3 to vein 1 a, red and both with the submarginal 
