394 
IOLAUS. By Dr. C. Aurivillius. 
schnitzel. 
paneperata. 
calisto. 
catori. 
laonides. 
maesa. 
state any other differences; it runs thus: ,,Allied with iulus ; upper surface lighter and less lustrous blue: forewine 
distinctly whitish at the base of the costal margin; hindwing with purely white fringes; a dark red spot, posteriorly 
accompanied by a black dot, occupies the upper part of the anal lobe; the lower part is white with a fine, black 
marginal line; the small tails are white with a fine black median line. Under surface yellowish-white ; in the 
forewing the costal margin and apex are somewhat covered with reddish-yellow; hindwing with a distinctly 
prominent orange band being somewhat thickened at each vein and running from the apex to the anal angle, 
where it unites with the red anal spot; it is also united with the red, black-pupilled submarginal spot of the 
area 2: a fine, interrupted submarginal line from the apex to the proximal margin; anal lobe with a jet-black, 
blue-scaled spot; the red anal spot with some violettish-red, small scales; a fine, black marginal line; fringes 
white: head white; thorax grey; palpi below white, above and at the apex black; legs white; antennae black, 
below with white dots.“ Kongo District on the Aruwimi River. 
1. schultzei Auriv. (97 e) is very easily recognizable by the thickened black marginal line of the hindwing 
beneath and by the other marks mentioned in the review. $ unknown. Adamaua in the Atlantica Mountains. 
1. paneperata H. Drc. (= elisa Sujf.) (67 e). The approaches above the $ of menas, but it is at once 
discernible by the black marginal band of the forewing being much broader in the areas 1 a and 1 b, the thicker 
black marginal line in the hindwing, the black submarginal spots of the areas 1 c and 2 of the hindwing, and 
the much larger red anal lobe of the hindwing. Beneath different only by the larger red anal spot of the hind¬ 
wing. Margin of hindwing at vein 3 with a short, though distinct tail. Nigeria near Lagos to Kongo. 
I, calisto Dbl. & Hew. (67 e). The $ deviates from the allied species by the light parts of the upper 
surface being metallic green, not blue. The under surface is white with an indistinct, brownish postdiscal line: 
forewing at the costal and distal margins liued reddish; hindwing with a large, carmine spot in 2, being distally 
coloured black; at the anal angle a black spot scaled light blue and proximally bordered by red; a shortened 
black submarginal line; marginal line black; fringes white. The $ is somewhat larger than the £ with the light 
parts of the upper surface greyish-white; hindwing with a somewhat irregular, brown, postmedian transverse 
band from the apex to the proximal margin, then follows a more indistinct submarginal band and a broad dark 
brown submarginal band; anal lobe orange-red with a black dot; an orange-reel spot in 2; both wings at the 
bases feebly covered with bluish-grey scales; fringes of forewings brown, of hindwings white; the under surface 
as in the <$. Senegambia to Gabun. 
I. catori B.-Bak. is described as follows: $ forewing of a deep lustrous blue, at the base and in the 
discal cell feebly speckled with light blue scales: costal margin broad black; apex as far as the anterior angle 
of the discal cell black; margin broad black, posteriorly narrowed and behind vein 2 linear; a pencil of black 
hair beneath at the proximal margin. Hindwing of a bright lustrous blue with a large, darker spot in the middle, 
reaching the proximal margin of the discal cell and enclosing a purple mealy spot of a greenish reflection, which 
extends to the costal margin and is surrounded by a ring of bronze-green scales; the whole spot changes its 
colour in a different light; behind it in the discal cell a lustrous purple stripe. Both wings beneath of a pure 
white; forewing unmarked; hindwing with a very fine dark submarginal line which is more distinct at the anal 
angle and with a red spot in 2; the small anal lobe which is above black with light green scales, is beneath 
lustrous blue, green and violettish-red at the proximal margin and above bordered by a red moon-spot from 
which a fine dark line extends to the proximal margin; three small, white-edged tails of which that at vein 
3 forms a long tooth. Expanse of wings: 37—-38 mm. Sierra Leone. 
I. laonides Aur. (67 e) differs from all the preceding by the sharply defined, dark marginal band on 
the forewing beneath. The is besides distinguished by the blackish colouring of the areas 1 a and 1 b on 
the forewing beneath. $. The dark blue colour of the forewing with a greenish reflection is distally rounded 
off, it covers the discal cell, the bc.se of the areas 2 and 3 and terminates at least- 3 mm. distant from the margin in 
the areas la and 1 b. On the hindwing the blue-colour covers the areas 1 c to 5 and the posterior margin of the 
discal cell and is bordered by a black marginal line being anteriorly very much widened in area 5; mealy spot 
yellowish-brown with a black zone; anal lobe black with green and white, sometimes also with red scales; often 
a black submarginal spot in area 2. Hindwing beneath white with a blackish postdiscal line between the proxi¬ 
mal margin and vein 4 and an irregular, anteriorly reddish-brown, posteriorly red submarginal line united with 
the black-pupilled spots of the areas 2 and 1 b; the small tail at vein 3 dentiform. The 9 is beneath like the 
A, but above it shows a broad, black marginal band on both wings, large black submarginal spots in the 
areas 1 b to 2 on the hindwing, and a black postdiscal transverse streak in the areas 1 c and 2 of the hindwing. 
Sierra Leone. 
I. maesa Hew. (67 e, f). Of this species only the $ is known. Its position is therefore uncertain. Frons 
white with a fine black median line. The species is larger than laonides , but it seems otherwise chiefly to differ 
