Explanation of Plates. 315 



Explanation of Plate XIX. 



Ancestral females of Pa/pilio dardanus. 



All the figures are about fV of the natural size. 



Fig. 1. Papilio dardanus, sub-sp. tibullns, § f- trimeni, n. f. 



Zanzibar, Lieut. Turner, 1884 : in the Hope Department, 

 Oxford University Museum. 



In this highly ancestral form of female the colour of 

 the central part of the wings is not so white as in the 

 Mppocoon form, but very pale buff and thus far nearer 

 to the colour of the male. The subapical patch is also 

 imperfectly divided from the main pale patch of the 

 fore-wing. 



2. Papilio dardanus, sub-sp. merope, ^ f- hippocoon. 



Gaboon, Hewitson Coll., in Brit. Mus. 



The exceptional variety of the Mppocoon form here 

 figured exhibits distinct rudiments of "tails" to the 

 hind-wings. It is of much interest that this ancestral 

 character should be associated with the ancestral pattern 

 of the hippocoon form. 



3. Papilio dardanus, sub-sp. merope, $ f. hippocoon. 



W. Africa, Crowley Coll., in Brit. Mus. 



This specimen of hippocoon also exhibits traces of the 

 lost * tails,' although to a much less extent than in the 

 last figured specimen. 



TRANS. ENT. SOC. LOND. 1906.— PART IL (SEPT.) 21 



