( 22 ) [xi 
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 
Rhamnus alaternus or R. alpinus. Mr. Bagwell-Purefoy’s 
cleopatra, however, would not eat R. alaternus; but throve, 
like rhamni, on R. catharticus. 
“Dr. Longstafi’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@. rhammni 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,” 
