( xli ) 



possible, as Boisduval pointed out, to find specimens of 

 G. rhamni which are less acuminate than some specimens of 

 G. cleopatra. We often find females which belong unmistak- 

 ably to the cleopatra type, both in form and in colour ; but 

 beside these we get other females which in shape appear to be 

 of the one form, and in colour of the other. Finally as to 

 the food-plant. This in the case of G. cleopatra is said to be 

 Ehamnus alatemus or R. alpiaus. Mr. Bagwell-Purefoy's 

 cleopatra, however, would not eat R. alatemus ; but throve, 

 like rhamni, on R. catharticics. 



" Dr. Longstaff's very interesting observation must of 

 course be allowed full weight. In reference to this it is 

 remarkable that I have not found any scales in either 

 G. rhamni or G. cleopatra which appear to be specialised for 

 scent production ; nor do I find any microscopic difference 

 between the ordinary scales of these two forms, except in the 

 matter of pigmentation. Further information as to all these 

 forms would be very welcome, especially in the case of G. 

 farinosa and its possible relation with G. rhamni and G. taurica, 

 in company with the latter of which forms it was found flying 

 by Mrs. Nicholl on the west side of Lebanon towards the 

 end of June (Trans. Entom. Soc. Lond., 1901, p. 81). Mean- 

 while, I think it may be considered as open to question 

 whether in a portion of their range G. rhamni and G. cleopatra 

 may not to some extent intergrade, though for the most part 

 they certainly appear to be distinct enough. 



" By the kindness of Professor Poulton I am able to 

 exhibit to-night specimens from the Hope Collection of many 

 of the forms that have been mentioned in the course of these 

 remarks." 



Mr. IT. J. Elwes, F.R.S., read the following note on the 

 Geographical Affinities of Japanese Butterflies, of which he 

 also exhibited numerous specimens : — 



"Twenty-three years ago (P. Z. S. 1881, p. 856, et seq.), I 

 wrote my first entomological faunistic paper, ' On the Butter- 

 flies of Amurland, North China and Japan,' basing it upon 

 the collections of Messrs. Jonas, Pryer, and Fenton. I then 

 attempted to analyse the distribution of the species, which 

 I classified as follows : — 



