ani on seasonal forms of Belenois. 433 
representing a slight local variation of which &. meldolx 
is the dry phase. The typical figures of the species re- 
present the intermediate phase, the wet phase of which 
has heavier black borders with which the subapical spots 
on the primaries are often united ; the dry phase is repre- 
sented by &. sabrata. A singular form of the species 
occurs sporadically in the area bounded by the Victoria 
Nyanza and Lake Nyasa; the females of this form differ 
so remarkably in outline and in the more or less lilacine 
greyish suffusion of the under surface that one might be 
excused for believing that they represented a distinct 
species. 
Belenois dentigera, Butl. 
This species, which is related to B. calypso, was based 
upon a dry-season male collected by Emin Pasha. The 
intermediate phase is represented by B. welwitschi of 
Rogenhofer (who states that it was collected in Angola !) ; 
of this phase we have a male obtained by Emin Pasha at 
Kangasi and three males from Nyasa-land. Of the wet 
phase, a heavily marked and more brilliantly coloured 
edition of the intermediate phase, we possess four males 
and one female from Nyasa-land. 
Belenots instabilis, Butl. 
Of this species we possess both sexes of all the phases, 
the wet form of the female somewhat resembling that sex 
of B. creona on the upper surface; both sexes are very 
heavily black-veined on the under surface. The inter- 
mediate phase bears much resemblance on the under 
surface to the wet phase of 4. dentigera, excepting that 
the insect 1s considerably smaller, the apical markings on 
the primaries are sulphur yellow and the median vein of 
the secondaries, with its branches, is black. In the dry 
form the black markings are reduced on both surfaces, and 
the secondaries below are more ochraceous. 
Belenois subeida, Felder. 
Related to the preceding ; we possess only single males 
of the wet and intermediate phases and a female of the 
dry phase. The species doubtless replaces Bb. instabilis in 
North Africa: whilst it ismuch more heavily bordered on 
