32 
MYLOTHRIS. By Dr. C. Aurivillius. 
mabillei. mabillei Auriv. (22 g) has the light markings on the upperside snow-white and much extended and the black 
median band of the hindwing beneath proximally abbreviated, not reaching the inner margin. Madagascar. 
callianira. f. callianira Mab. is the dry-season form of mabillei and only differs from it in having the under surface of 
the hindwing and the apex of the forewing suffused with reddish. Madagascar. 
4. Genus: Mylotliris Hb %.m 
This extensive genus is peculiar to the Ethiopian Region and consists of medium-sized butterflies with 
white or yellow, rarely dark grey, ground-colour. Their wing-pattern consists only of black spots at the ex¬ 
tremities of the veins, which are sometimes all rounded and entirely free, sometimes more or less united into 
a marginal band; on the hindwing there are rarely more than six marginal spots; the base of the forewing 
and sometimes also of the hindwing, is often light yellow, red-yellow or fiery red, especially on the under surface; 
discal spots and dark spots at the end of the coll are always wanting; the apex of the forewing is usually rounded, 
and more obtuse in the $ than in the A- Larva of normal Pierid-shape, but with somewhat longer hairs than 
in the European species of Pieris. The pupa with a row of processes on the dorsum and a hook-shaped pro¬ 
cess on each side at the base of the abdomen. The genus occurs almost everywhere in the Ethiopian 
Region and is only wanting in Arabia, on the Maskarenes, the island, of Socotra and some of the small islands. 
Although the species are often very nearly allied, it has so far not been proved that any are associated as sea¬ 
sonal forms or as local races. The species may be divided into three groups according to the markings. 
Humbloti- Group. 
Both wings entirely without black spots at the extremities of the veins. 
humbloti. M. humbloti Oberth. (10 c). Wings on both surface unicolorous black-grey with somewhat lighter 
veins. Only met with on the island of Great Comoro. 
Chloris-Group. 
The wings always with black marginal spots, which, at least on the underside of the hindwing, are united into a black 
marginal band. Forewing on both surfaces with black apical band and above with narrow dark costal-marginal stripe as 
far as the base. The $9 are distinguished by a broader black marginal band on the hindwing. 
M. chloris. Both surfaces of the forewing with white ground-colour, beneath with red-yellow basal 
spot; hindwing beneath with ochre-yellow ground-colour; apical spot of the forewing on both surfaces continuous 
chloris. at least to vein 4. — chloris F. (lOd). Hindwing in both sexes with white, or in the A sometimes with yellowish 
ground-colour, its marginal band in the A above 4—5, but beneath 9—10 mm broad, in the 9 15—17 mm 
broad, covering the apical part of the cell. Distributed from Sierra Leone to the Congo and eastwards to 
clarissa. Equatoria. — Clarissa Btlr. The black marginal band of the hindwing much narrower, in the A only conti¬ 
nuous from the anal angle to the middle of cellule 3, in the 9 not reaching the apex of the cell; the ground¬ 
colour of the hinclwing above in the 9 light ochre-yellowish. Njamnjara, Equatoria and Uganda. 
intermedia. M. intermedia Auriv. (12 c). Agrees with chloris in the ochre-yellow under surface of the hindwing, 
but differs from it in the narrow apical band of the forewing, which above is indistinctly defined proximally 
and beneath only continues to vein 5; the basal part of the forewing to the apex of the cell and the hindwing 
to the marginal band are covered with black-grey scales above; the A is unknown; the marginal band of the 
hindwing in the 9 is only 2—4 mm broad and continuous. Cameroons. 
rembina. M. rembina Plotz (12a) differs from the two preceding species in the sulphur-yellow ground-colour 
of the hindwing beneath. The AS vary but little, have above a pure white ground-colour, an apical band on 
the forewing only continuous to vein 4 and a narrow marginal band on the hindwing, which is constricted 
between the veins or even broken up into spots; beneath this marginal band is always continuous and 4—7 mm. 
broad; the forewing beneath without red-yellow basal spot, at most somewhat sulphur-yellow at the base of the 
costal margin. The 99 are very variable, rarely similar to the A, but usually with much broader marginal band 
on the hindwing, and the marginal band on the forewing continuous almost to the hinder angle, sometimes 
infuscata. with the hindwing above black almost to the base, ab. infuscata Bartel, or even suffused with black-grey on 
fusca. both wings, ab. fusca Bartel. Cameroons and Gaboon. 
analis. M. analis Auriv. (12 a). A' wings above with Avliite ground-colour, hindwing suffused with yellowish 
at the inner margin and especially at the anal angle, marginal band of the forewing continuous to vein 3; fore¬ 
wing beneath red almost to the apex of the cell, then yellowish, and only white in cellules la, lb, 2 and 3, 
marginal band narrower than above and posteriorly broken up into spots; hindwing beneath ochre-yellow 
with the marginal band 3—4 mm broad. The 9 differs only in having both wings reddish orange-yellcw with 
somewhat broader black marginal bands. French Congo. 
