( Ixxxvi ) 



from at all. Much remains to be rlone, but Mr. Leigh's 

 work marks a great advance in our knowledge of this most 

 interesting of mimetic forms. 



Tlie President showed a long series of Crastia amymone, 

 captured by Mr. J. C. Kershaw at Macao. The series exhibited 

 a beautiful transition between typical amymone, Godt., and 

 (/odarfi, Lucas, the lavender apical patch on the fore-wing first 

 appearing as a minute trace in certain individuals, gradually 

 becoming larger in others. Himilar transition occurred in 

 the development of the white marginal spots of the hind- 

 wing. Mr. Heron had noticed intermediate forms between 

 these two Euploeas about ten years ago, and had arranged 

 them in the collection of the British Museum as possible 

 hybrids between godarti and felderi, Butl. ( := amymone). 

 Among the three specimens thus arranged was one captured 

 by Commander J. J. Walker in May, 1892. Mr. Kershaw's 

 results throw new and unexpected light on the subject ; for 

 not only has he shown the gradual transition, but he has even 

 succeeded more than once in breeding well-marked individuals 

 of the one form from well-marked individuals of the other. 

 He also states the larvje eat the same food-plant, and are 

 exactly alike, as also are the pupa\ After this evidence 

 there can be no doubt that we are dealing with a single 

 species, and godarti becomes a subspecific form of amymone. 

 It is hoped that on some future occasion parent and offspring 

 will be shown to the Society, and represented in one of the 

 plates of the Transactions. The speaker expressed the opinion 

 that Mr. Kershaw's observation was one of those important 

 pieces of work which opened the way to a great deal more. 

 He believed that there was no group in which such work is 

 more wanted than in the Euploeina. 



The President also exhibited a photograph, taken by Mr. 

 Alfred Robinson of the Oxford University Museum, showing 

 the Xylocopid model and its Asilid mimic exhibited by Mr. 

 E. E. Green at the meeting of June 1 (Proc. Ent, Soc. Lond. 

 1904, p. xxxix). The example was particularly interesting, 

 inasmuch as Mr. Green's recoixl of the mimic circling I'ound 

 its model tended to support the view that the bee is the prey 

 of the fly. {See Trans. Ent. Soc. Lond. 1904, pp. 661-663.) 



