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touch a butterfly. Some years ago the question was raised 

 by the Bombay Natural History Society, and he, with others, 

 took notes on the subject. He recorded two cases only 

 during three years' observing. It was significant that while 

 the flocks of locusts and white ants were attended by 

 vertebrates of all orders, the flocks of butterflies in Ceylon 

 (locally known as " snowstorms ") were attended by one 

 species only of bird, and that but seldom. 



In his opinion the enemies of butterflies were chiefly, if not 

 entirely invertebrate. In Ceylon two protected species, 

 Euplcea core and Delias euckaris, were largely taken by a 

 mantis, Gongijlus gomjy hides, while two of the large Asilidas, 

 Promachus maculatus and Scleropojon ainbrijon preyed largely 

 on Danais limnace. 



Mr. Blandford : In criticizing the term " homoeochroma- 

 tism. " Prof. Poulton had, he thought, somewhat mistaken 

 the speaker's attitude. He had no intention whatever of 

 excluding theoretical considerations, even if he could not 

 accept them at their full value. But it was obviously unjust 

 that a class of facts, about which there could be no dispute, 

 should be labelled with a collective name implying the 

 acceptance of a theory which, however well it might stand 

 criticism, had certainly not yet been established. He 

 preferred to keep one terminology for the facts and another 

 for the explanatory theory. 



The wideness of meaning which he proposed to attach to 

 the term " homoeochromatism " required some explanation. 

 Certainly he conceded that it covered cases of Batesian 

 mimicry ; but if generally adopted, it would probably prove 

 convenient to give it a more restricted and conventional 

 meaning by their exclusion : such a conventional limit had 

 constantly to be applied in terminology. In order to keep 

 the nomenclature of these facts independent of speculation it 

 seemed desirable to employ the words " mimic " and " model " 

 without reference to the questions of Batesian or Miillerian 

 mimijry, the essential character oi a " mimic " being that of 

 a wide departure from the general type of its genus or 

 subfamily with a resulting likeness to a model which was not, 

 or scarcely, modified thereby ; in homoeochromatism, as he 



