DIESTOGYNA. By Dr. G. Aurivillius. 
167 
middle of discoidal cell a pair of black streaks outlined in yellow; at extremity of cell a similar pair. Beyond 
extremity of cell an oblique, yellow, rather narrow bar extending from subcostal nervure to second median 
nervule. Nearer the apex and forming the other side of a triangle of which the costa is the base is a row of five 
white spots, the first above subcostal nervure, the last between third radial and first median nervules. Dark 
internervular streaks join the two sides of the triangle. Parallel with distal margin from a point close to 
apex to posterior angle is a dusky black submarginal stripe interrupted somewhat by crossing nervules near 
apex. — Hindwing: Base to just beyond end of cell, inner and distal margins dusky olive-brown. A large 
patch of an ochreous buff colour fills the discal half of the wing nearer costa. A dark row forming irregular 
dusky streaks, of which the outer is best defined, crosses the outer discal portion of the wing. Fringe olive- 
brown with some small white dots. Underside — Chestnut-brown, with costa, apex, posterior angle of forewing 
and whole of hindwing except distal margin shaded with grey; oblique bar on forewing white. Inner margin 
of fore wing pale olive-brown. On hindwing an irregular line crosses basal portion just beyond extremity of 
cell, and a row of seven small white spots crosses discal area. Expanse: 59 mm”. Kavirondo: Kisumu and 
Congo region. 
D. ernesti-baumanni Karsch (38a). Both wings above black-brown; the forewing with indistinct crncsti- 
light transverse streaks in the cell and with the usual oblique band whitish yellow; of the spots of this band ,mumanni - 
those in cellules 4—6 are much smaller than the other two, just as in the $ of karschi; the white subapi- 
cal dots are distinct; hindwing above between the costal margin and vein 1 b with an irregular, light yellow 
median band, 4—9 mm. in breadth, which projects most widely distad in cellule 4 and is consequently broadest 
there; the underside recalls that of karschi $, but is lighter, less striated, and has the basal area of the hind¬ 
wing smaller and traversed by a row of light spots. Togoland. 
D. felicia Btlr. recalls the preceding species, but has the markings more yellowish and differs from all felicia. 
the other $$ of this subgroup particularly in having the oblique band on the forewing very narrow, almost 
linear; this is the case especially in cellules 2 and 3, where it is only represented by small, fine crescents; the 
crescent in cellule 2 is continued to the hindmargin by an undulate transverse streak in cellules 1 b and 
la; in this respect felicia $ forms a transition to those of the third subgroup; on the hindwing the light yellow 
median band is formed almost as in the preceding species, but the rows of black spots in the distal part are more 
distinct, nearly as in saphirina $. The under surface is neither described nor figured by Butler; he only 
mentions that the oblique band of the forewing is white instead of yellow. Gold Coast. 
D. plagiata Auriv. (37 d). Only the A is known; it differs at once from all other species in the large, plagiata. 
sharply defined spot with intensive blue reflection in the anal area of the hindwing; the wings are otherwise 
black-brown above, with indistinct, darker transverse markings; the postdiscal spots in celhdes 4—6 of the 
hindwing are faintly bordered with yellowish; the under surface is rather uniform rust-brown, slightly irro- 
rated with grey at the anal angle of the hindwing; the cell of the hindwing has a black dot and its basal area 
is bounded by a dark curved line; the dark spot in cellule 4 is only weakly indicated. Congo: Bena Bendi. 
Second Subgroup. 
The have the ground-colour above at least in part red-brown to orange-yellow or bear a similarly coloured transverse 
band on the forewing. The $9 agree with those of the first subgroup in having on the fore wing a light oblique band between 
the middle of the costal margin and vein 2. 
D. milnei Hew. (37 f). In the $ both wings are deep black above, at the base bright rust-brown and at milnei. 
the costal margin of the hindwing broadly rust-yellow; near the apex of the cell the forewing has a light 
blue transverse streak and beyond the apex of the cell a large light blue spot; the subapical dots are 
often indistinct, the fringes white; on the hindwing the black ground-colour has a large velvety spot before 
the anal angle; the under surface is dark red-brown and quite similar to that of D. plagiata, only somewhat 
darker. The $ is orange-yellow above with the apical area and costal margin of the forewing and the mar¬ 
ginal band of the hindwing black; this marginal band is posteriorly somewhat broader and nearly reaches 
the lunulate line, before which is placed a row of 7 black dots; otherwise the hindwing is entirely unmarked 
and not darker at the base; the oblique band of the forewing is pure white and forms large spots in cellules 2 
and 3, but only very small or indistinct ones in cellules 4-—6; the under surface is much lighter than in the 
but otherwise similar, only differing in having the basal area of the hindwing finely margined with whitish; 
the anal area is suffused with grey. Liberia to the Cameroons. 
D. fuscomarginata Bartel (37 d). Of this species only the $ is known; it recalls those of milnei and fusco- 
amicia. The basal half of the forewing to beyond the apex of the cell and the hindwing to far beyond the middle mar 9 inata 
are orange above; the costal margin and the apical half of the forewing as well as a broad marginal band and 
the postdiscal spots of the hindwing are black; the forewing has a white oblique band, which, however, is 
only feebly developed in cellules 4—6; the under surface is similar to that of milnei $; the hindwing is round¬ 
ed, not, as in milnei, somewhat produced at the end of vein 2. From the Johann-Albrechthohe, North Ca¬ 
meroons. 
D. amicia Hew. (37 d, as “amicea”). In the A the ground-colour of both wings above is red-yellow amicia. 
with black-brown marginal band and three black-brown transverse bands or transverse rows of spots between 
