( 3 ) 



Mr. Millar has furnished photographs of the three sets of 

 Euralia progeny bred by him, with many most valuable details 

 as to transformations, etc., and also a selection of specimens 

 of the larvae, pupae, and imagines. With all these data I 

 propose to deal fully in a later communication to the Society.* 

 xvi] 



Professor Poulton reminded the Fellows of Mr. Guy A. K. 

 Marshall's conclusion that E. waldb&rgi and mima were forms 

 of the same species (Trans. Ent. Soc. Lond., 1902, pp. 491, 

 492), and of the exhibition of specimens relied on as evidence 

 (June 6, 190G : Proc. Ent, Soc. Lond., 1906, pp. liii, liv). He 

 felt thai Mr. A. D. Millar was to be greatly congratulated on 

 his success in obtaining this long-wished-for proof of a most 

 important and probably far-reaching conclusion. 



Professor Poulton considered that the uniform offspring 

 of the mima parent {!>) could not be explained in the same 

 manner as the predominant cenea offspring of P. dardanus in 

 Natal ; for according to Mr. G. F. Leigh (Proc. Ent. Soc. 

 Lond., 1906, p. lvii) mima is the rarer of the two forms in 

 Natal, whereas in the same area cenea is by far the commonest 

 of the dardanus females. 



The comparison of the results obtained by Mr. Millar in (a) 

 and (b) suggested a Mendelian relationship between the two 

 forms. t It was interesting to compare the records of two 

 broods obtained from Hypolimnas misippus (Proc. Ent. Soc. 

 Lond., 1909, pp. xxxvi, xxxvii). 



Professor Poulton also exhibited a set of 6 Euralia anthedon, 

 Doubl., and 4 E. dubia, Beauv., captured in the same locality, 

 Oni, 70 miles east of Lagos, by Dr. W. A. Lamborn (Dec. 1908- 



* Since the meeting on 2nd inst., I have received from Mr. A. D. Millar 

 the result of a second experiment in breeding from the ova of the mivia 

 form, differing remarkably from that of the first {b) described above. From 

 a ? mima' 8 11 ova, laid on 21st November, 1909, were bred 8 mima 

 (5 <J <5,3? 9 ) and 3 wahlbergi {6 6 )• This rounds off the case very 

 satisfactorily. As in result (a), the wahlbergi and mima of this last family 

 are respectively all true to type, and not one example is at all intermediate 

 between the two forms. — R. Trim en, March 15, 1910. 



f Since the date of the meeting I have had the chance of discussing 

 the facts with Mr. L. Doncaster, who agrees that the two forms are 

 probably a Mendelian pair, but considers that we have not at present 

 sufficient evidence to decide whether wahlbergi or mima is dominant. 

 Mr. Doncaster agrees that the last result, recorded by Mr. Trimen in the 

 footnote for p. xv, makes it probable, but by no means certain, that mima 

 is the dominant.— E. B. Poulton, March 21,1910. 



