Papilio dardaniis (^nicrope) and Acraia j'ohusioni. 283 



Plate XVII, Fig. 8, about the same as No. Ill on p. G81. 

 " " " ^ 1 Nos IV-V 



>' " 111 i_ir 



ThcunliguredcripijlcJ " " " " " " " 



The two ccnea represented in Figs. 8 and 11, on Plate 

 XVII, show the influence of iroplionius parentage (see 

 description of Figures, p. 313). 



In the latter pages of this memoir these 11 specimens, 

 both male and female, will be often referred to and 

 compared with other forms. 



II. Pa'pilio dardanus $ f. trimcni, new form. 



In his Presidential Address to the Entomological Society 

 of London in 1898 (Proc. 1897, pp. Ixxxviii, Ixxxix) Mr. 

 Roland Trimen, F.R.S., described a remarkable form of the 

 female dardanus, sub-species tilndlus, from Zanzibar, in 

 the Hope Department. After expressing the opinion 

 that the West African dionysos was the least modified as 

 compared with the male of all the various tail-less conti- 

 nental female forms known until that time,* he went on to 

 describe the specimen from Zanzibar as " a much closer 

 approximation to the masculine coloration. In this female 

 the tran verse trace of black in the fore-wings is even 

 fainter than in the dionysos form, and the colour of the 

 wide pale spaces and the hind-marginal spots in all tlie 

 Avings is almost exactly of the pale creamy-yellowish tint 

 of the male P. cc7ica ; and on the under-side, while the 

 pale yellowish of the fore-wings is better divided by 

 blackish than on the upper-side, the colouring of the 

 hind-wings corresponds much more nearly to that of 

 the male than in any other female I have seen — the 

 characteristic break in tlie submarginal brownish band 

 being moreover very complete and wide. There can be 

 no doubt that in this specimen we have a marked case of 

 reversion to the original colouring of the female, but it is 

 unaccompanied by any inclination towards the recovery of 

 the lost tail of the hind-wings." In the same address 

 (p. Ixxxviii) the distinguished African naturalist expresses 

 the opinion that " we may not unreasonably hope to dis- 



* Speaking of dionysos, Mr. Trimen quotes his earh'er paper in 

 Trans. Ent. Soc. Lond. 1874. The reference is erroneously given 

 as p. 178 : it sliould be p. 148. 



TRANS. ENT. SOC. LOND. 190G. — PART II. (SEPT.) 19 



