and on seasonal forms of Belenois. 433 



representing a slight local variation of which B. meldolw 

 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 B. 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 Emm 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. 



Belenois 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 B. dentigera, excepting that 

 the insect is 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 B. instabilis in 

 North Africa : whilst it is much more heavily bordered on 



