PLATYLESCHES. By Dr. C. Aurivillius. 
a. Hindwing beneatli monotonously dark brown with a bent row of dark, often light-ringed spots in 2 to 9, 
sometimes also with a white spot in 1 c. P. galesa. 
[3. Hindwing beneath at the margin dusted with whitish and with lighter veins, a white spot in I c. Forewing 
beneath in 1 b with a distinct white longitudinal patch. P. nigricans. 
? P. depygatus. 
B. Abdomen above at the apex dark-coloured. 
a. Hindwing beneath with a light median transverse band at least between the costal margin and vein 1 b, 
*. The transverse band of the hindwing beneath is interrupted in area 1 b. 
§. The transverse band of the hindwing beneath is very indistinctly defined, violettish-grey and 
diffuse; the area between the margin and the band is dark brown. P. morilili. 
§§. The transverse band of the hindwing beneath is distinctly defined, white or yellowish. 
1. The hyaline spots 3 and 4 of the forewing are small, punctiform and separate. The transverse 
band of the hindwing beneath is only about 2 mm broad, white. Margin of the forewing before 
the anal angle distinctly emarginated. P. picanini. 
2. The hyaline spots 3 and 4 of the forewing are oblong and only separated by vein 4. The 
transverse band of the hindwing beneath is about 4 mm broad, light yellowish. P. goetzei. 
3. The hyaline spot in 4 is absent. The discal cell of the forewing only shows a hyaline spot 
situate near the anal angle. P. subnotatus. 
**. The transverse band of the hindwing beneath is coherent from the costal margin to the proximal 
margin, sharply defined, in the areas 1 a to 1 c white, in 2 to 6 yellow. Hyaline spots 3 and 4 of 
the forewing separate. P. lamba. 
p. Hindwing beneath without a light transverse band, but generally as above with a transverse row of 
light spots. 
*. Both wings or at least the hindwing beneath at the margin of the ground-colour, dark brown or 
blackish. Hindwing beneath with a generally distinct transverse row of light spots. The hyaline 
spots 3 and 4 of the forewing are small and separate. 
1. Hindwing beneath of a grey ground-colour and with distinct discal spots. P. amadhu. 
2. Hindwing beneath of a blackish ground-colour. P. chamaeleon. 
**. Both wings beneath at the margin between the apex and vein 2 more or less clothed with lighter 
scales, but in the area 1 b of the hindwing monotonously dark brown. 
1. Almost the whole under surface of the hindwing is thinly strewn with small grey scales. 
P. ayresi. 
2. Both wings beneath between the apex and vein 2 with a broad, violettish-grey marginal band. 
P. robustus. 
P. ertli. 
P. galesa Hew. (79 a) is the largest species of the genus and easily recognized by the marks stated galesa. 
in the review. Guinea. — nigerrimus Btlr. (79 b), as the figure shows, differs but slightly from the type, nigerrimus. 
British Central Africa. 
P. nigricans Holl. (79 b). Both wings above black; hindwing with white fringes; otherwise particularly nigricans. 
distinguished by the light dusted veins and the black colour of the distal part of the areas 1 a to 1 c on the 
hindwing beneath. Sierra Leone to Gabun. 
P. depygatus Strand was described after a specimen lacking the apex of the abdomen and therefore depygatus. 
denominated depygata (= devoid of the anus) (!). The circumstantial description of the upper surface and 
under surface of the forewing does not contain any essential differences from P. nigricans ; but the under surface 
of the hindwing is described as follows. ,,The hindwing is beneath lined with violettish particularly in the basal 
area; the markings are faded violettish-whitish, and consist of a postmedian, irregularly zigzag-shaped, narrow 
band extending between the dorsal vein 8, the posterior half corresponding with the band above, moreover 
of a light longitudinal stripe extending along the whole dorsal margin, a spot in the cell at the costal margin, 
and finally the veins are for the greatest part lighter and partly connected by light transverse streaks; the 
whole forms an extinct, irregularly reticulate, blurred marking.“ Nyassaland. If the apex of the abdomen 
is white, depygata probably belongs to nigricans as an eastern race. 
P. moritili Wallengr. (79 a) is the species of the genus being known longest and occurs in the nioritili. 
whole of South Africa as far as the Congo District. It is particularly distinguished by the indistinctly defined 
transverse band of the hindwing beneath. The fringes on the hindwing beneath between the anal angle and vein 
2 are broad uni-coloured white or light yellow, then between 2 and 7 grey or at least with a broad grey basal 
line. — costalis form. nov. differs by the costal margin of the hindwing beneath being yellow in its v bole width costalis. 
