Ixxviii 



Canibs. ; F. E. Wilson, Jacana, Darling Road, East Malvern, 

 Melbourne; and H. E. Winser, 2, Mead Road, Craaleigh, 

 Surrey. 



Gift to the Society. 



The Treasurer announced that he had received £500 

 towards the Housing Fund from the Misses Chapman on 

 behalf of their brother, the late Dr. T. A. Chapman, F.R.S. 



Exhibitions. 



A Note on Belenois gidica Godt. — Dr. F. A. Dixey 

 exhibited specimens and drawings of the genitalia and scent- 

 scales of Belenois gidica Godt., with those of some other species 

 of Belenois for comj^arison. He said : — 



" The old-world Pierine group to which the well-known 

 forms B. calypso Drury, B. zochalia Boisd., and B. mesentina 

 Cram., belong, may be treated either as a section of Pier is 

 (Trimen, Aurivillius) or as a separate genus under the name 

 Belenois or Anaphaeis (Butler, Fruhstorfer). Though capable 

 of some subdivision, it constitutes in most respects a natural 

 assemblage; but the divergence in some structural points 

 shown by one group of subspecies seems sufficient to raise a 

 doubt whether it is properly included in the same genus 

 or section with the other species just referred to. The grouj) 

 of subspecies in question is that included under the general 

 head of Belenois gidica Godt. 



" A structural feature common to all the ordinary forms 

 of Belenois is the prolongation of the clasper in the male into 

 a long posterior S])ine directed backwards. There is no 

 posterior spine on the clasper of gidica, but only a slight 

 convexity in the corresponding situation. Another point 

 is the structure of the scent-scale. In all the other species of 

 Belenois the sides of the lamina are nearly parallel or slightly 

 sinuous, the apex is comparatively sharp, the distal border is 

 furnished with an array of well-developed fimbriae, and the 

 accessory disc is large, rounded, oval or chestnut-shaped. 

 In gidica the lamina is slug-shaped, dilated towards the base ; 

 there are no fimbriae, their place being taken by a few minute 

 tubercular processes of the blunt distal border. The accessory 



