(i  seaxixz ) 
the most interesting of butterflies, from known parents. Further 
convincing evidence of its stability as a form is seen in the 
fact that it also occurs almost unchanged so far away from 
Natal as the N.E. corner of the Victoria Nyanza. A 
specimen collected by Mr. A. H. Harrison about 1903 at 
‘“‘Unyori,” N.E. of Kisumu, differs from the Natal specimens 
no more than the other female forms of P. dardanus from 
these two remote localities are known to differ. “ Unyori,” as 
Mr. C. A. Wiggins informs me, is certainly a rendering of 
‘‘Nyangori,” a forested locality at a height of about 5000 ft. 
to the N.E. of the great lake. Mr. Harrison’s specimen 
was figured 4 of the natural size, by the present writer in 
Trans. Ent. Soc., 1906, Plate XX, fig. 1. It is there spoken 
of as “intermediate between planemoides and cenea.” The 
figure here referred to may stand as an adequate repre- 
sentation of the Jleighi form described below, the slight 
differences between it and the Natal specimens, as also 
between the two latter, being indicated in the description. 
Fore-wing upper surface. All the markings possess a rich 
fulvous tint closely resembling that of planemoides, becoming 
paler in closest proximity to the costa in the two Natal 
specimens. The three paler markings are: spot (4), between 
veins 8 and 9, the costal end of spot 5, within the cell, and 
the apical spot (8), between veins 7 and 8. ‘This increasing 
paleness towards the costa is also often seen in planemoides. 
In form and position the subapical bar is that of trophonius 
and hippocoon, while the other markings are those of cenea. 
In this latter form, the principal spot (between veins 2 and 3) 
may be extended downwards and outwards into the next 
interspace between veins 2 and 1), as may be seen in the 
examples represented on Plate XXVI, figs. 18, 19, and 21, 
of Trans. Ent. Soc., 1908. In the leighi form the same 
tendency is manifested to an equal extent in specimen 48, 
to a slightly greater extent in 36. The latter furthermore 
possesses the linear marking along the inner margin which 
is also often seen in cenea; e.g. in the original of Fig. 15 
referred to above. In the Unyori (Nyangori) example (Plate 
XX, fig. 1, Trans. Ent. Soc., 1906) the principal spot extends 
downwards much further and is continuous with the linear 
