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plate ; but knowing what we did of the close association of 

 the two forms, he thought it was quite evident the two were 

 merely forms of a single species, especially as no difference in 

 structure had been pointed out. 



West African Homopteea. — Mr. W. A. Lamborn exhibited 

 a series of twelve Homoptera of the genus Flata, all taken feed- 

 ing on one plant, 70 miles E. of Lagos, on Dec. 1, 1912. The 

 insects were dimorphic, and he stated that the pink and green 

 forms were mixed as they rested on the plant. He had 

 not observed in these the definite arrangement according to 

 colour mentioned by Mr. Gahan, although he was acquainted 

 with the same species. 



Prof. Poulton observed that the insect probably had the 

 instinct for congregating, though not of colour-arrangement, 

 and that in the two known instances in which the green 

 specimens were found above and the pink below they had 

 probably come out in that order, and had not yet flown, and 

 that when once disturbed they congregated again, but 

 promiscuously. 



Euchelia jacobaeae, L., captured and then abandoned 

 by a Robin. — Prof. Poulton exhibited an apparently un- 

 injured example of E. jacobaeae given him by Mr. Roland 

 Trimen, F.R.S., who had made the following observation on 

 June 20, 1912. The moth was flying slowly at midday in his 

 garden at Fawley, Onslow Crescent, Woking, when a robin 



[xci 

 captured it on the wing and flew with it behind a bush. 

 After about three minutes the bird flew away, and Mr. Trimen 

 found the moth lying upon the ground. Although there was 

 no obvious injury, except that one fore-wing was bent over 

 and slightly rubbed, the insect seemed paralysed or almost 

 dead. E. jacobaeae being, however, one of those moths that 

 readily "feign death," and Mr. Trimen being anxious to 

 preserve the specimen just as it was left by the assailant, he 

 placed it without delay in a killing-bottle. 



