2i6 On Three new Species of African Butterflies. 



Mylothris flaviana. 



Male. — Upperside differs from M. ochracea, Auriv., in the 

 colour of the wings, which are uniform yellow, not ochraceous, 

 and in the broader greyish-black apex of the anterior wings. 



On the underside the dark apical area of the anterior wings 

 is restricted to half the area of the dark markings on the 

 upperside. 



Expanse of wings 2g- inches. 



Hah. Cameroons. 



Nep)tis callina. 



Upperside. Both wings dusky brown ; anterior wings 

 crossed beyond the cell by a broad white band, placed rather 

 obliquely and extending from the subcostal nervure at the 

 middle to the lowest median nervule ; the upper part of the 

 band at the end of the cell curves abruptly inwards, tlie lower 

 part of the band being narrower and indented on its outer 

 edge; a rather large white patch on tlie middle of the inner 

 margin, extending upwards to the lowest median nervule ; 

 beyond the band towards the apex, are three narrow hastate 

 white markings, and traces of a fourth, enclosing a row of 

 conical spots darker than the ground-colour, followed by 

 two submarginal brownish-white lines, divided by the veins ; 

 the cell is crossed beyond the middle by three dark lines 

 and a V-shaped marking towards the base, the spaces be- 

 tween which are paler than the ground-colour. Posterior 

 wings crossed about the middle by a broad white band, 

 the inner edge of which is regular and the outer edge is 

 indented ; towards the outer margin between the veins is a 

 row of conical spots, darker than the ground-colour, bordered 

 on either side by dusky white lines, followed by a sub- 

 marginal row of narrow lunulate dark bars, narrowly bordered 

 on each side by dusky white lines; the cilia on both wings 

 between the veins narrowly white, the veins where they cross 

 the white bands being also white. 



Underside brighter and paler brown than above, with the 

 white spots and lines much brighter ; on the anterior wings 

 the ground-colour of the cell is brownish white, and on the 

 posterior wings there is a broad white streak above the costal 

 nervure. 



Expanse of wings If inch. 



Hab. Cameroons. 



