316 JExplanation of Plates. 



Explanation of Plate XX. 



Planemoides females of Fapllio dardanus together with inter- 

 mediates between this and the other female forms. 

 All figures are about i of the natural size. 



Fig, 1. Papilio dardanus, sub-sp. merope, $ 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 

 9 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 planetnoides from cenea. 



2. Papilio dardanus, sub-sp. merope, 5 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, 5 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, snh-si:!. merope, 2 i. 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, poggei. 



