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close to Digue, where the species attains a size equal to that of 

 the Spanish specimens, but with a darker and more typical 

 apollo coloration. What is the actual difference of delius 

 from apollo no one will tell me. I can find both species 

 described, but then the descriptions do not cover all the races 

 of each. Text-books are usually satisfied to state that every 

 one knows them so well that there is no need to mention the 

 distinctions. This would unquestionably be a sound position 

 if one had only to deal with such Swiss specimens as I have 

 placed on either side of my Spanish specimens. The best 

 character is certainly the black ringed antenna?, which are 

 also usually proportionally shorter. The denser creamier 

 colouring is also very characteristic, yet this would make the 

 Aragon specimens delius. The pouch of the female is to my 

 view identical in both species. Mr. Elwes, I think, omits 

 to say whether it is so or not. The £ appendages have no 

 structural difference that I have been able to observe, beyond 

 one in size, those of apollo being larger and so apparently 

 more solid. In the Spanish apollo this is markedly so ; the 

 differences are, however, I think, less proportionately than 

 may be observed in Erebia xthiops, of which the appendages 

 of continental specimens are so much larger than those of 

 British examples." 



Mr. G. C. Bignell sent for exhibition and discussion a 

 specimen of Sphecophaga vesparum, Curt., and the cocoon from 

 which it had been bred. Mr. Donisthorpe expressed his 

 opinion that the host was a Ground Wasp. 



Papers. 



Mr. Gilbert J. Arrow contributed a paper upon " The 

 Genus Hyliota, with descriptions of new forms and a list of 

 described species." 



Mr. W. L. Distant communicated a paper entitled " Con- 

 tributions to a knowledge of the Rhynchota." 



November 20th, 1901. 

 Mr. George Henry Verrall, Vice-President, in the Chair 



