72 



" The males of all these local races differ but little in their 

 markings and form, in some races a red spot occurs in the base of 

 the cell in one of the seasonal forms, in other races it never appears, 

 while the amount of the red area at the base of the wings is also 

 variable. 



" The females however are dimorphic in the shape of their 

 hindwings, the latter occurring both tailed and tailless ; in colour 

 and pattern they are very polymorphic, not only forming 

 local forms but seasonal as well. Local forms which occur pre- 

 dominenfcly in one area occur aberrationally in other areas. 



" In Sumatra at least four distinct forms of the female have 

 been named, three of them tailless and one tailed. Dr. Martin has 

 frequently bred the species from larv*, which fed on Citrus limetta 

 and C. (leciiiiiaiui, and on one occasion he bred all four forms 

 of female from eggs laid by one female, while on another occasion 

 eggs laid by a tailed female did not produce a single tailed descen- 

 dant like herself. 



" There is but little suggestion of mimicry in the species, but 

 Wallace says that the $ f acliatea of P. iiiemuon mimics the form 

 doHhledani oi P. coon (Trans. Linn. Soc, J865)." 



Professor T. D. A. Cockerell, who was present as a visitor, 

 gave a short account of the entomological national collection in the 

 United States of America. 



SEPTEMBER 9th, 1920. 



Mr. J. B. Farmer, of Brixton, was elected a member. 



Mr. Bowman exhibited a brood of PJpIu/ra porata bred from ova 

 laid b}' a female captured at Witley, which had emerged in two 

 distinct series : about one half of the brood in August and the other 

 half the following spring ; and called attention to the curiously 

 close resemblance of the spring series to the allied species E. 

 piiuctaria. 



Mr. H. Main exhibited the larvae of three species of hymen- 

 opterous parasites, which were feeding on larvsis of the Longicorn 

 beetle, li/ioi/ium inquisitor, common in Epping Forest in recent 

 years. 



Mr. Turner exhibited about forty species of moths taken by Mr. 

 Grosvenor in India, chief!}' at Bangalore, including a fine example 

 of AttacKS etlwardsi, a series of Trabala vislinit with female colour 



