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of its Amauris models —psyttalea, Plcitz, hecate, Butler, and 

 an undetermined species, probably new, from the Cameroons. 

 The specimens of formosa, mercedonia, and their models were 

 those figured in Plates XI and XII accompanying Mr. S. A. 

 Neave's paper in Ent. Soc. Trans., 1906, p. 207, and it was 

 xxxii] 



explained that, in the Hope Department, figured specimens 

 illustrating the problems of bionomics were as far as possible 

 always arranged side by side with copies of the respective 

 plates. Professor Poulton said that, although the examples 

 were well known, he had ventured to exhibit them, because 

 the bionomic history of the three African species of the 

 Oriental genus Tirumala, had never been so completely 

 illustrated as in the drawer which he had brought to the 

 meeting. There was something arresting in the sight of the 

 actual species with their mimics and models, which was 

 inevitably lost in descriptions and figures, however good. He 

 drew attention to the fact that the deep reddish-brown 

 colour of mercedonia was preserved, but little darkened, on 

 that part of the under surface of the fore wing of morgeni 

 which is covered by the hind wing in the attitude of rest, 

 although elsewhere, on all visible parts of both surfaces, the 

 tint had so far deepened as to present the closest likeness to 

 the Amauris models. The pattern of the undetermined 

 species of Amauris was more closely resembled than that of 

 auy other, although, in the form of the fore wings, hecate 

 appeared to be the principal model. Professor Poulton 

 pointed out that Tirumala passed from the condition of a 

 model to that of a mimic at the point where it had left its 

 original country furthest behind, and had penetrated most 

 deeply into the area where the black and white species of 

 Amauris were dominant. 



A LARGE LEPIDOPTEROUS PUPA, PROBABLY L.YCAENID, FOUND 

 IN THE LEAF-NEST OF OECOPHYLLA, IN THE LAGOS DISTRICT.— 



Professor Poulton exhibited the pupal shell and the dead 

 pupa referred to by Mr. W. A. Lamborn in the following 

 note upon the tree-ant Oecophylla smaragdina, F., race longi- 

 noda, Latr. Both pupae, which were evidently of the same 

 species, were attached to the leaf by an expanded suckerlike 



A 5 



