Papilio cenea and Hypolimnas misippus. 685 



The evident hereditary tendencies displayed in these 

 males, together with their marked individual differences, 

 are of especial importance in relation to the study of tlie 

 wonderful series of modifications which are encountered 

 when we trace the allied forms of this remarkable Papilio 

 from the coast of British East Africa, westward into 

 Uganda, and north-westward into Abyssinia. In any such 

 investigation we must reckon with the fact that individuals 

 of the same synepigonic group are now proved to exhibit 

 great variation in the degree of continuity of the most 

 prominent feature in the hind-wing. E. B. P. 



III. The Synepigonic Group hrcd in 1903 from a captured 

 female of Papilio cenea (TROPHONius/o?m of female). 



I succeeded in capturing one of these rare forms of the 

 female in the neighbourhood of Durban on September 18, 

 1903. Both wings on the right side were slightly but 

 distinctly smaller than those on the left (see Plate XXXI, 

 Fig. 9). From this butterfly only seven eggs were obtained, 

 and only five larvse successfully reared. It is certain that the 

 experiment was not in any way vitiated by the introduction 

 of wild eggs, larvae, or pupa3. Two of the larvae pupated 

 on October 19, one on October 20, and two on October 

 23. The butterflies emerged on the following dates: — 



Nov. 2. 1 $ cenca-hxm (Plate XXXI, Fig. 10). 

 „ 3. U (Fig. 14). 

 „ 4. 1 ^ ( „ 13). 

 „ 6. 1 ^ ( „ 12). 



1 ^ cenea-iovva (Fig. 11). 



Thus both the female offspring of the rare tropJionias 

 form were examples of the commonest of all Natal 

 varieties. 



Comparison of the Individtials of the 1903 Synepigonic 

 Group of Papilio cenea. By E. B. Poulton. 



The first of the females to emerge is rather smaller than 

 the other (Plate XXXI, Fig. 10). Spot (1) is unusually 

 small for an insect of this size (compare Figs. 3, 4, and 11), 

 being not only greatly reduced by encroachment of the 

 ground-colour but also overspread with scattered dark 

 scales. The specimen is a white-spotted variety very 

 similar to female II. of the 1902 group. The appearance 

 of spot (5) is, however, the same as in female III. 



