( XX ) 



Mr. F. W. Frohawk, on behalf of the Hon. Walter 

 Rothschild, exhibited a specimen of PseudaercBa miraculosa 

 mimicking Danais chrysippns ; also a specimen of the mimic 

 of the latter, Dladema misippus, and read notes on the 

 subject. 



Mr. C. G. Barrett exhibited, and commented on, a long 

 series of specimens of Melitaa aurinia [artemis) from Hamp- 

 shire, Pembrokeshire, Cumberland, and other parts of the 

 United Kingdom ; also a long and varied series of Coremia 

 fluctuata. 



Mr. H. Goss exhibited, for Mr. W. Borrer, jun., of Hurst- 

 pierpoint, a photograph of a portion of a wasp's nest which 

 had been built in such a way as to conceal the entrance 

 thereto, and to protect the whole nest from observation. He 

 also read the following note on the subject, which he had 

 received, through Mr. Borrer, from Mrs. Blackburn, of Hen- 

 field, Sussex, the owner of the nest : — 



" What is shown in the photograph is only a flat piece 

 built over the wall, behind which the nest is situated, in 

 order apparently to hide the entrance, and make it exactly to 

 resemble the surrounding stone and mortar, thereby seeming 

 to show an instinct of mimicry. From a study of Dr. 

 Ormerod's book, the nest appears to be that of Vespa vxdgans. 

 It was situated close to a window in the upper story of an 

 old farmhouse, built with cross-beams of oak, the squares 

 filled in with stone, rubble, and mortar, giving a sort of 

 yellow-grey appearance between the oak-beams, which the 

 nest exactly resembled. As the swarm was large, it had to 

 be destroyed. From below the nest showed itself only as a 

 little hole close to the beam, but, on closer inspection, the 

 man who took the nest saw what looked like the whole side of 

 it exposed, but it was so like the surrounding stone and mortar 

 as to make it most difficult to see where that left off and the 

 wasps' work began. On inserting a knife at the edge he 

 found he could take off the piece, and then the reason for 

 it appeared. At some time or other, when the house was 

 repaired, the workmen, not having enough stone, put in 

 one large red tile to fill up, so the red patch was very 

 conspicuous ; the wasps therefore, for some reason of 



