DIESTOGYNA. By Dr. C. Aurtvillius. 
165 
white transverse band on the forewing; the under surface recalls that of the <L, but is lighter and has the basal 
area of the hindwing more quadrate and margined with whitish grey. Sierra Leone to Ashanti. 
D. barombina Auriv. (38 c). In the $ the black transverse markings of the upper surface stand out barombina. 
distinctly and the dark blue colour is only present as transverse lines between the black bands; the fringes 
are unicolorous dark brown, or only on the forewing with some indistinct light dots; the under surface is coloured 
and marked almost exactly as in veronica, only a little lighter and with a small, not very distinct black 
dot in the cell of the hindwing; this dot is entirely absent in veronica, but in the two following species is large 
and very distinct. The $ above is brown-yellow on the hindwing and at the base of the forewing and the 
forewing has a white transverse band with the spot in cellule 2 almost free; the under surface is rather dark 
brown and the basal area of the hindwing much darker than the distal half, the latter being suffused with grey; 
the dark spot in the basal part of cellules 4 and 5 stands out sharply; the cell, however, has only an indistinct 
dark ring instead of the black dot. Cameroons. 
D. incerta spec. nov. (38 c). The upper surface of the <$ agrees exactly with that of the of barombina incerta. 
and tadema, but the under surface is bright and almost uniform ferruginous, only at the distal side of the basal 
area somewhat relieved with yellowish; the basal area of the forewing is very large, extending somewhat beyond 
the middle of the wing and with its distal boundary curved; the basal area of the hindwing is but little darker 
than the marginal half, distally bounded by a black-brown dentate line and ornamented in the cell with a distinct, 
light-edged, black dot; the blackish spot in cellules 4 and 5 at the middle of the basal area stands out distinctly; 
the white dots at the proximal extremities of the postdiscal spots are conspicuous; the fringes of both wings 
uniformly dark; the white subapical dots of the forewing are indistinct or absent. The $ recalls on the upper- 
side those of the allied species, but has four distinct dark transverse bands on the hindwing; the under surface 
has the ground-colour rust-brown, as in the (J, but somewhat lighter, and only differs materially in the mark¬ 
ings in having the basal area of the hindwing distally broadly bordered with whitish grey; the black dot in the 
cell of the hindwing stands out sharply. Cameroons; discovered by the Swedish collector Fritz Theorin. 
D. tadema Hew. (38 a) is very similar in both sexes to the preceding and particularly to D. barombina, tadema. 
but differs from them in the lighter, brown-yellow to grey-yellow, ground-colour of the under surface, the 
black dot in the cell of the hindwing beneath is large and stands out sharply; in the the fringes are unicolo¬ 
rous, dark, the subapical dots of the forewing small or indistinct and the basal area of the forewing distinctly 
obtuse-angled distally in cellule 4; in the $ the under surface of the forewing is brown-grey and that of the 
hindwing not or only indistinctly suffused with grey. Old Calabar, Cameroons, Gaboon; in the Cameroons 
probably the commonest species of the genus. 
D. nigropunctata Auriv. (38 b), of which only the <$ is known, is certainly very near to D. tadema, nigrojmnc- 
but is much lighter both above and beneath. On the upper surface the black transverse bands are sharply f,lta - 
contrasted with the brown ground-colour, which has only a slight violet gloss; the under surface is pale whitish 
yellow with the markings quite blurred; only the black dot in the cell of the hindwing and the elongate but 
much reduced black centres of the postdiscal spots on both wings stand out sharply; the basal area of the 
hindwing is hardly darker than the ground-colour and is bounded by a darker line; the dark spot in cellule 4 
is scarcely indicated. Ikelemba, Congo. 
D. aurivillii Bartel (38 b, c). This species was erected on a $ and is unknown to me in nature; it is de- aurivillii. 
scribed as follows: “Forewing somewhat more strongly incurved than in D. veronica Cr., otherwise similar to that 
species, especially in the markings, but these are less prominent; a greenish gloss overspreads especially the cell, 
the blackish stripe beyond the discocellular is narrower and is only continued to vein 3; the upper part of this 
stripe is distally bounded by a small whitish spot; greenish scales mass themselves at various places near the 
costal margin; the row of white dots before the apex is rather strongly expressed; the reflections on the rest of 
the wing are much darker than in D. veronica, almost darker than even in amaranta Karscln ; under surface very 
dark and sharply marked, otherwise similar to the former species; the distal boundary of the dark basal area 
of the forewing has a different course; hindwing very dark brown with a broad, sharply defined band in the 
basal part, this band proximally margined with yellow, broadest, broken up into spots, in the anterior part; 
cell with a large dark brown spot and a lighter one at the end; the blackish spot in the middle is more extended: 
distal part of the wing brown, very uniform, with a row of whitish dots and obscure dentate lines”. Cameroons, 
at the Barombi Station. 
D. schultzei Auriv. (37 e). This beautiful species is also only known in the male. Wings above dark schultzei. 
black-brown with four distinct blackish transverse bands between the end of the cell and the distal margin 
and four blackish transverse spots in the cell of the forewing; both wings in certain lights with very bright greenish 
blue reflection, which on the forewing covers the dark spots in the cell and cellules 1 a—3, without, however, com¬ 
pletely reaching the distal margin, and on the hindwing extends over the cell, cellules 2—5 and the costal margin of 
cellule 1 c; cellules 4—6 on the forewing are without the blue reflection and each bears a white subapical dot 
and at each side of the first dark transverse band some whitish grey scales; the interspace between the second 
