PALLA. By Dr. C. Aurivillius. 
141 
Ch. porthos Smith. Hindwing above with a blue transverse band 4—5 mm. in breadth, placed in the porthos. 
middle anti continued on the forewing almost straight to vein 6 or 7, but then becoming gradually narrower 
and breaking up into spots. $ unknown. Cameroons to the Congo; very rare. 
Ch. zelica Btlr. (32 b). Hindwing above with a narrow blue transverse band, broken up into spots, zelicu. 
placed far beyond the middle and only 7 mm. from the distal margin. Forewing above with a transverse row 
of small blue spots, almost vertical to the costal margin and forming almost a right angle with the band of the 
hindwing. ^ unknown. A rare species, only certainly known from the Cameroons and Angola. 
Ch. laodice Drury (32 c). <$: hindwing above with blue marginal streaks in cellules lc—5(—6), but laodice. 
without submarginal dots or only with very small ones; close inside the marginal streak and only 3 mm. from 
the distal margin is placed a row of 6 thick blue spots. Forewing above with blue submarginal spots in 1 a—4 
and with two blue spots at the costal margin in 5 and 6, about 5 mm. beyond the apex of the cell. Wings 
beneath with grey silky gloss, hindwing with a blackish transverse band beyond the middle. both wings 
above with broad, dark ochre-yellow marginal band; hinclwing with white submarginal dots, but without 
marginal streak. Gold Coast to Angola. 
Second Subgroup. 
Cell of the forewing above wholly or for the most part blue. Hindwing without submarginal dots. Hindwing above 
beyond the apex of the cell with a straight blue median band, anteriorly narrower; this is continued on the forewing by 
a row of large blue submarginal spots running parallel with the distal margin. Porewing in addition with two blue spots 
at the middle of the costal margin in cellules 5 and 6. The $ with a tail 5 mm. in length at vein 4 on the hindwing. 
Ch. mycerina Godt. Forewing above without blue marginal spots. Hindwing above with almost con- mycerina. 
tinuous blue marginal streaks. Sierra Leone to the Congo. 
Ch. doubledayi Auriv. (32c). Forewing above with large blue marginal spots; hindwing above with doubledayi. 
thick marginal lunules. Sierra Leone to the Congo; commoner than the preceding species. 
3. Genus: l*:alln Hbn. 
Agrees with Climaxes in neuration and other morphological characters; but the middle and hindtibiae are 
without spines above, veins 3 and 4 of the hindwing are long-stalked and the closing vein of the ceil on the hindwing 
very fine. In the scheme of markings, however, the species of Palla differ entirely from all the Charaxes. The 
under surface of both wings is divided by a white median band into a dark basal area, almost without markings, 
and a marginal area densely covered with brown transverse striation; cellules 1 a and 1 b on the hindwing 
also striated. Hindwing without marginal streak, but its underside just before the distal margin with black, 
white-pupilled eye-spots, ringed with red-brown. In addition to the black proximal bordering of the white 
median band there are in the dark basal part of the under surface black transverse streaks only in the cell of 
the forewing (4) and one each in cellule lb of the forewing and 7 and 8 of the hindwing. 
Forewing in the G6 °f all species unicolorous black-brown above, with a white median band starting 
from the middle of the hindmargin and reaching the costal margin somewhat before the middle. Hindwing 
with a long tail at vein 4 and above with a very large orange-yellow median area, which extends at the hind- 
margin from the anal angle to vein 4 or 5 and becoming gradually narrower anteriorly reaches at least to the 
middle of vein 3 or even to vein 6 or 7 and anteriorly joins the continuation of the white transverse band of the 
forewing. When the orange-yellow area is long the white band of the hindwing becomes short, and vice versa. 
The early stages are unfortunately not known. 
P. publius Stgr. The white transverse band on the underside of the forewing is sharply bounded distally publius. 
by a black-brown band. The orange colour on the upperside of the hindwing reaches at least to vein 6. $ si¬ 
milar to the A- Sierra Leone to the Congo. 
P. ussheri Btlr. (32 d). The white transverse band on the underside of the forewing distally not sharply ussheri. 
defined, but only bounded by the dark striation. A '■ upper surface marked as in publius. wings above with 
common light yellow to yellowish white median band; forewing with contiguous orange-yellow submarginal 
spots and hindwing with similar marginal spots. Sierra Leone to the Congo and Uganda. 
P. decius Cr. A (32 d). The white median band of the upper surface reaches vein 5 or 4 on the hind- decius. 
wing and is more or less broadly bordered with bluish. $ similar to that of ussheri, but with lighter, almost 
white, bluish-bordered median band 7—11 mm. in breadth on the forewing and the submarginal spots com¬ 
pletely separated. Sierra Leone to Angola. 
P. violinitens Crowley is very similar to the preceding species and only differs in the $ in the white or violinitens. 
blue band of the hindwing covering also the base of cellules 2 and 3 and in the $ in having the white median 
band 12—15 mm. in breadth in the middle. Gold Coast to Angola. 
