166 
DIESTOGYNA. By Dr. C. AuRrviLLius. 
karschi. 
saphirina. 
hobleyi. 
and third dark transverse bands on the hindwing is rather densely covered with yellowish scales in cellules 4—6, 
forming an abbreviated yellowish transverse band (a distinct approach to the $3 of the second subgroup); 
fringes of both wings dark. The under surface of the forewing at the costal margin brown as far as vein 4, then 
lighter, yellowish; the cell with curved white transverse lines; the basal area distally bordered with whitish 
between the costal margin and vein 4; the hindwing beneath rather light, uniform red-brown; the basal area is 
almost unicolorous, only ornamented with a black, light-ringed dot. in the cell and a whitish grey transverse 
spot in cellule 7, distally it is bounded by a smooth line, broadly margined with whitish and very obtusely 
angled at vein 4; in cellule 4 the whitish bordering is interrupted by a blackish spot; the postdiscal spots are 
indistinct and as usual each marked proximally with a white dot; the anal area is only slightly mixed with 
violet-grey scales. In North-West Cameroons; discovered by Lieut. Arnold Schultze. 
D. iris Auriv. (37 e, f). In the $ the wings are black-brown above, with indistinct blue reflection, but 
with sharply prominent blue markings. The cell of the forewing with 5 blue transverse streaks; the basal area 
somewhat darker, broadly margined with blue in cellules 3—6 on the forewing and in the middle of the 
hindwing; the postdiscal spots of the forewing with black centres and blue rings and distally sharply bounded 
by a black lunulate line; the hindwing beyond the middle with two sinuous black transverse lines, margined 
with bright blue; the under surface rather uniform brownish sand-coloured, indistinctly striated with brown 
and with indistinct markings; a dark dot in the cell of the hindwing; its basal area little darker than the ground¬ 
colour, distally curved and in cellule 4 bounded by a dark spot. In the $ the forewing is blackish above, only 
in cellules 1 a and 1 b light brown-yellow, the yellow colour, however, does not reach the distal margin and is 
darkened at the base; the transverse lines in the cell are also yellowish; the white transverse band is irregular and 
its spot in cellule 2 small and free; the hindwing is light brown-yellow above, with a dark marginal band, not 
sharply defined, a black lunulate line composed of sharp angles, and before this a transverse row of black dots; 
the under surface is coloured and marked almost as above; the basal area of the hindwing is as light as 
the distal part and very indistinctly separated from it; only the black-brown spot at the base of cellule 4 stands 
out distinctly; in the cell a dark ring; the whole under surface is indistinctly striated with light brown and the 
lunulate line and the dark dots are much duller than above. Katanga, southern Congo. 
D. karschi Auriv. (37 d, e). In the <$ both wings are deep black above; the hindwing is quite unicolorous 
without markings, only with white dots on the fringes and a dense black-brown pecten of hair along vein lb; 
on the forewing four blue transverse streaks in and beyond the cell and the blue rings of the postdiscal spots 
contrast very beautifully with the deep black ground-colour; the white subapical dots are distinct and the 
fringes between vein 4 and the hinder angle white; the under surface is whitish grey in the apical part of the 
forewing and the anal area of the hindwing, otherwise blackish, but densely sprinkled with small black striae 
throughout. The $ is red-yellow above, in the apical half of the forewing blackish and at the distal margin 
of the hindwing darkened, the forewing with dark transverse markings in the cell and the hindwing with the usual 
row of dots and lunulate line; the white transverse band of the hindwing is distinguished by having the spots 
in cellules 4—-6 much smaller than the other two; the under surface, as in the <$, is finely striated with black 
and especially distinguished by having the basal area of the hindwing large, sharply angled, dark black-brown 
and densely striated with black, but otherwise cpiite without markings. Cameroons. 
D. saphirina Karsch (37 f). $: wings above coffee-brown with sapphire-blue reflection and very indistinct 
dark transverse bands; the hindwing lighter at the costal margin; forewing without subapical dots; the under 
surface is lighter brown; the forewing has lighter transverse striae in and beyond the cell and 2 or 3 white 
subapical dots; the basal area of the hindwing is somewhat darker, with its distal boundary curved, and with a 
small light ring in the cell; the postdiscal spots indicated by light dots. The $ differs considerably from the $$ 
of the preceding species and belongs to another type, resembling Catuna ; both wings have the ground-colour 
above black-brown; the oblique transverse band of the hindwing is light yellow and has the last spot, in cellule 
2, placed almost free, the cell with 5 grey-yellow transverse streaks, similar transverse streaks also in cel¬ 
lule lb; 5 whitish subapical dots and a distinct black submarginal line; the hindwing has a posteriorly ab¬ 
breviated and much narrowed light yellow median band, placed between veins 2 and 7 and at the latter about 
9mm. in breadth; in cellules lc—6 the lunulate line and a row of spots before it are very distinct, in cellules 
1 c—3 there is also a third row of dark spots; beneath both wings have the ground-colour brown-grey, but 
somewhat lighter in the middle of the hindwing; the basal area of the hindwing is quadrate and bounded by a 
darker, somewhat dentate line; it encloses a very indistinct dark ring in the cell and 2 or 3 small, lighter 
spots. Found in the eastern Congo region on the Ituri River and at Bolengi. 
Near this species probably belong the following three, of which only the females are known. 
D. hobleyi Neave is a species unknown to me in nature; the $ is described as follows: “Dusky olive- 
brown with yellow markings. Upperside — Forewing dusky olive-brown shaded with black scales. Crossing 
