316 Explanation of Plates. 
EXPLANATION OF PLATE XX. 
Planemoides females of Papilio dardanus together with inter- 
mediates between this and the other female forms. 
All figures are about § of the natural size. 
Fia. 1. Papilio dardanus, sub-sp. merope, 9 form intermediate 
between cenea and planemoides. In coll. A. H. Harrison, 
from Unyori, N.E. of Kisumu, about 1903. The specimen 
figured is beautifully intermediate between these two 
@ forms, of which the planemoides is seen in Figs, 2 
and 4 and the cenea in Plate XVIII, Fig. 3. The discal 
patch of the hind-wing of this intermediate variety is 
not white as in planemoides. It is much nearer to the 
buff of cenea, but exhibits a faint reddish tinge which 
may indicate some influence of trophonius. Taken alone 
the specimen here represented would strongly suggest the 
origin of planemoides from cenea. 
2. Papilio dardanus, sub-sp. merope, 2 f. planemoides. 
Nyangori (Forest land), N.E. of Lake Victoria Nyanza, 
near Kisumu, 5000 feet. Captured November 1-8, 1902, 
by C. A. Wiggins. In Hope Department, Oxford 
University Museum. In everything except a curious 
overspreading of the discal patch of the hind-wings by 
' dark scales this is a typical planemoides form. 
3. Papilio dardanus, sub-sp. merope, Q f. planemoides, tending 
somewhat in the direction of hippocoon. From the same 
locality as Fig. 2. Collected about 1903 by A. H. 
Harrison. In Hope Department, Oxford University 
Museum. The hippocoon influence is seen in the great 
extension of the fulvous area along the inner margin of 
the fore-wing. This specimen taken alone suggests the 
origin of planemoides from hippocoon or trimeni. Compare 
Figs. 2 and 4 with 3. 
4, Papilio dardanus, sub-sp. merope, 2 f. planemoides. Nairobi, 
British East Africa, May 17, 1903. In coll. A. H. 
Harrison. The specimen figured is a fine typical example 
of this beautiful form. The extended basal black area 
of the hind-wing is an approach towards the much 
greater development of this marking in the model, 
Planema pogget. 
