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Eastern Euralias, ivahlbergi, Wallgr., and mima, Trim., are 

 the forms of a single species] be established, it follows that 

 the corresponding and closely-allied mimetic West African 

 forms Euralia anthedon and E. dubia, connected like ivahlbergi 

 and mima by intermediate varieties, are similarly the di- 

 morphic forms of a single species." Mr. Marshall's conclusion 

 concerning the Eastern species was confirmed by the late 

 Mr. A. D. Millar in 1909 (Trans. Ent. Soc, 1910, p. 498), 

 and the further prediction about the Western species is 

 now, in 1911, verified by Mr. W. A. Lamborn. The Western 

 problem is, however, the more complicated and interesting 

 of the two ; for Euralia dubia is not a simple mimetic form 

 like mima, but is itself modified in the Oni district into three 

 subordinate forms, in mimicry of (1) Amauris egialea, Cram., 

 with much yellow in the hind-wings, (2) the most strongly 

 white-marked of the local forms of Amauris psyttalea, Plotz, 

 (3) Amauris hecate, But!., and the darkest forms of A . psyttalea 

 which closely resemble them. The hereditary influence of 

 the parent dubia upon its dubia offspring was clearly evident 

 in Mr. Lamborn's families. 



[It may be added that Mr. Lamborn has now bred families 

 from three dubia parents of various forrns, and one from 

 an anthedon parent, all captured at Oni in March of the 

 present year. Both anthedon and dubia appeared in all the 

 families. The numbers of the offspring are very large, and 

 the two forms always bear a simple numerical relationship 

 to each other, such as we should expect to see in a Mendelian 

 pair. At the date of the meeting (June 7) only two of 

 these families, both from dubia parents, had arrived in this 

 country.— E. B. P., Aug. 7, 1911.] 

 xlvi] 



Instances of Mimicry, Protective Resemblance, &c, from 

 the Lagos District. — Mr. W. A. Lamborn, who was intro- 

 duced by Prof: Poulton, had intended to show at this meeting 

 the cases which he had exhibited at the Conversazione, but 

 owing to a misunderstanding, they had not arrived. He 

 made, however, the following observations : — 



"Prof. Poulton's account of the mimicry of certain Danaine 

 butterflies by Euralias induces me to mention that I recently 



