164 
DIESTOGYNA. By Dr. C. Aurivillifs. 
simplex. 
feronia. 
albopunc- 
tata. 
umbrina. 
veronica. 
is ferruginous; this colour extends far into cellules 3-—5; the basal area of the hindwing is dark rust-brown 
with a yellow spot at the base of cellule 7 and in the cell; the distal half is reddish yellow next to the basal 
area and without dark spot in cellule 4, but then for the most part suffused with rust-brown and reddish 
brown; the postdiscal spots are bordered with blackish, filled up with grey and rust-brown. The $ scarcely 
differs from that of D. atrovirens above; the white transverse band of the forewing, however, is much narrowed 
at the costal margin; the under surface of the forewing is entirely*uniform dark brown-grey with the same 
markings as above; the basal area of the hindwing is almost entirely black-brown and connected by a narrow 
stripe at the costal margin with the distal margin, which is likewise much darkened between the apex and vein 4; 
all the rest of the wing is light yellowish, thinly irrorated with brown, with long but indistinct postdiscal spots 
and entirely without dark spot in cellule 4. Congo: Mawamba-Makala. 
D. simplex Stgr. (38 e, f). In the $ both wings are unicolorous dark brown above with blue reflection, 
only before the distal margin the two outermost rows of spots stand out rather distinctly; the fringes of the 
forewing are dark; beneath cellules la—-2 of the forewing are grey; both wings otherwise uniform red-brown 
with very indistinct markings; the basal area of the hindwing is scarcely darker than the ground-colour, entirely 
unspotted, but with a black dot in the cell and distally bounded by a fine blackish, curved and somewhat undulate 
line; close to this line is placed in cellule 4 an indistinctly defined black nebulous spot; at the anal angle the 
ground-colour is very faintly tinged with grey; the white subapical spots of the forewing are completely absent 
on both surfaces. The $ has the forewing black-grey above, at the apex somewhat darker, blackish, with 
straight, continuous white transverse band and white subapical dots; the hindwing is grey-brown above, tinged 
with yellowish at the costal margin and in the postdiscal spots; the under surface as in the but much 
lighter, uniform light brown-yellow, and with very distinct black spot in the basal part of cellule 4 on the hind¬ 
wing; the boundary-line of the basal area sharply angled at vein 2. Sierra-Leone. 
B. feronia Stgr. (38d, e) is so similar to the preceding species that it is sufficient to mention the differ¬ 
ences: in the $ the wings are tinged with very dull and dark bluish above and the hindwing from the costal 
margin to the fold of cellule 4 dark brown without blue gloss; the forewing has white fringes and white submar- 
ginal dots; on the under surface the forewing is alternately banded with yellowish and red-brown and is only 
grey in cellule 1 b. Both sexes differ in having the basal area on the underside of the hindwing posteriorly cut 
off straight between vein 4 and the inner margin, and broadly margined with violet-grey; the blackish spot in 
cellule 4 (and 5) stands out sharply. Sierra Leone. 
D. albopunctata Auriv. (38 d). The wings in the $ are blackish above with blue reflection but without 
distinct black transverse markings and without white subapical dots; the fringes are dark, but have on the 
forewing small white and on the hindwing yellowish dots at the extremities of the interneural folds; beneath 
both wings are very dark grey-brown, the forewing with grey transverse lines in the cell -and the basal area 
margined with grey and angled at vein 4; the postdiscal eye-spot-s are very distinct and have small white dots, 
cellules 6—8 are grey-scaled at the apex; the basal area of the hindwing is much longer than broad, somewhat 
darker than the ground-colour, and encloses only a dark dot in the cell; the anal area is mixed with grey and the 
eye-spots white-pupilled. Umangi and Banana, Congo region. The $ figured probably belongs to this species, 
but was not found together with the <$<$. 
D. umbrina Auriv. (38 d) is only known in the male and approximates to the preceding species. It 
differs in having the dark transverse bands of the upper surface weakly indicated, the fringes uniformly dark, 
the basal area on the underside of the forewing differently shaped, projecting in a tooth at vein 2, the eye- 
spots of both wings indistinct, scarcely more than indicated by the white dots, and the basal area of the hind¬ 
wing more distinctly margined with grey. Congo region, at the Ikelemba River. 
D. veronica Cr. (38 b ?) *) was described and figured by Cramer as long ago as 1780 and is consequently 
the oldest known Diestogyna. The $ is rather light greenish blue above in any light, only a marginal band, 
which on the foreAving is 2 mm. in breadth, but on the hindwing scarcely 1 mm., is black; the fringes are distinctly 
spotted with white; the dark transverse markings in the cell of the forewing stand out distinctly and the black 
transverse bands are also more or less indicated, the outer band of the hindwing in particular is distinct, also 
the white subapical dots of the forewing; the ground-colour of the under surface is fairly uniform dark brown, 
the rounded basal area of the hindwing, however, decidedly darker than the distal half; the basal area of the 
forewing is distally weakly curved and margined with whitish grey; the postdiscal spots are distinct and ringed 
with grey; the apex Is slightly grey-scaled in cellules 7 and 8; on the hindwing a blackish spot is placed in cel¬ 
lules 4 and 5 close to the distal side of the basal area; the anal part is faintly tinged with grey as far 
as the basal area; in the basal area there is some small violet-grey clouding; in the white-spotted fringes and the 
stronger, more extended and continuous blue colour of the upper surface the A differs at once from they'd' of the 
folloAving nearly allied species. The $ has the upper surface rather uniform grey-brown with continuous 
* The figures here given, from specimens in the Berl. Mus., have not come out successfully; possibly they even belong 
to one of the folloAving species. 
