PRECIS. By Dr. C. Aijrtvillius. 
219 
segments 2—10, on the other hand, have each 8—11 short spines, one in the mid-dorsum, one at each side of the 
dorsum and three on each side, of which the lowest on segments 6—9 is double; segments 2 and 3 lack the medio- 
dorsal spine, but are otherwise armed like segments 4 and 5; the 11th segments has no spine on the leg; the 
12th only the three dorsal spines and the 13th (the anus) only tAvo spines. — Pupa with obtuse, slightly emar- 
ginate head; dorsum and abdomen with short tubercles. 
The species may be divided into groups according to the following synopsis. 
Synopsis of the Groups. 
I. Hindvdng at the extremity of vein 1 b distinctly produced, lobed or tailed, and always projecting more 
than at the end of vein 2. 
A. Basal half of the forewing blue at least to the apex of the cell. Hindwing above with 1 or 2 large 
eye-spots (in cellules 2 and 5). First Group. 
B. Basal half of the forewing not blue. Hindwing above without eye-spots or with a transverse row of 
-4—7 small ones. 
a. Wings above dark brown—-black-brown, Avithout actual light transverse band, but with tAvo black 
. median lines, which enclose a sometimes darker, sometimes lighter (red-broAvn) transverse band. 
i Distal margin of the hindwing at vein 5 distinctly, often very strongly angled. Second Group. 
b. Wings above with light brown-yellow ground-colour or with a sharply defined, white -—- yelloAV 
-—- red transverse band in or somewhat beyond the middle. 
* Distal margin of the hindwing strongly undulate, lobed or dentate. Third Group. 
** Distal margin of the hindAving entire or only slightly undulate, rounded or at vein 4 angled. 
Fourth Group. 
II. Hindwing rounded at the anal angle, without tail or lobe at the extremity of vein 1 b; distal margin, 
however, sometimes projecting most at vein 2, more than at vein 1 b. Fifth Group. 
First Group. 
The species of this group have hitherto only been found in South and Bast Africa and in the Madagascar subregion. 
They may be easily known by the large eye-spots on the upperside of the hindwing and by the colouring. 
P. touhilimasa Vuill. has, like the folloAving species, 5 or 6 black transverse lines in the cell of the touhili- 
forewing above, but the upperside of the hindwing is bright blue at the base ($) or to far beyond the middle masa - 
(d 1 ) and has tAvo yelloAV, black-ringed eye-spots of equal size. Beneath both Avings are brown, at the apex 
of the foreAving and in the distal part of the hindwing more or less tinged with violet-grey; the foreAving has 4 
and the hindwing 3 whitish transverse lines, of which the distal one is straight and extends from the inner 
margin near the anal angle to the costal margin; the eye-spots are smaller than above, but quite distinct. 
The upperside of the forewing is coloured and marked almost as in artaxia (52 a). South-eastern part of the 
Congo region and in Rhodesia. 
P. artaxia may always be recognized by having the upperside of the hindwing uniform grey-broAA r n 
to the base, with two eye-spots, the posterior one, in cellule 2, always smaller and occasionally even indistinct; 
the cell of the fore wing above has 5 or 6 black transverse lines; the forewing above greenish blue to the 
apex of the cell, then with a broad black transverse band and in the distal part lighter blue with two dark 
transverse lines, of which the proximal becomes very broad posteriorly. -— artaxia Hew. (52 a) is the dry-season artaxia. 
form and is distinguished beneath by the hindwing having a straight brown or yelloAvisli transverse line, which, 
is continued also on the foreAving, although less distinct; the ground-colour is slate-grey to dark brown and the 
eye-spots are entirely absent or only indicated. Angola to German East Africa, but not in South Africa. In 
the rainy-season forms the eye-spots are distinct beneath also, yelloAV Avith black rings, and the under surface 
more uniform dark broAvn without transverse line on the hindAving. f. nachtigalli Dew. has on the underside of nachtigalli. 
the hindwing a violet-grey marginal band, 5 mm. in breadth, Avhich almost reaches the eye-spots and is divided 
by a dark undulate line; the apex of the forewing beneath broadly violet-grey. Angola and Ny as,sal and. Appa¬ 
rently rarer than the following more extreme rainy-season form. f. nobilitata Thur. only differs from nachtigalli ndbilitata. 
in having the underside of the fore wing whitish at the apex and that of the hindwing at the distal margin 
only grey outside the black line and with a thick black-brown line betAveen this and the distal margin; the 
eye-spots are larger and broadly separated from the light colour at the distal margin. Mashonaland and German 
East Africa. 
