Ixxxvii 



show the different forms of flowers to his class he began to 

 collect m the neighbourhood, but could only find primroses 

 of one form. 



Is it not probable that fertilisation was often effected 

 locally and illegitimately by means of small beetles, thrips, 

 etc., with limited powers of ranging, and that sufficient legiti- 

 mate crossing to maintain the strength of the stock is carried 

 on by Bomhylius and the Lepidoptera with tongues of 

 sufficient length which have been observed to visit the flowers ? 



In the discussion Mr. A. E. Tonge recorded the fact that 

 he had netted CucuUia verbasci L., at primrose bloom when 

 collecting at dusk in April near Chichester. 



Aberrations in Papilios prom Formosa. — Mr. Arthur 

 DiCKSEE exhibited : — 



(1) An example of homoeosis in Papilio horishanus, male, 

 from Central Formosa. On the underside of the left fore-wing is 

 an oblong patch, 5 mm. X 2-5 mm., of the colour and with 

 the rough scales of the underside of the hind-wing. It lies 

 along the middle of nervure 4, and projects forwards half-way 

 across cell 4. It is bright red with a semicircle of black, 

 which is broad internally and anteriorly and becomes very 

 narrow where it touches the nervure on either side. The 

 black part represents the posterior part of the black spot in 

 the middle of cell 4 of the hind-wing, but is not identical in 

 shape with it : in the hind-wing the black does not touch the 

 nervure and is slightly convex posteriorly. The abnormal 

 wing is fully developed, shows no reduction in size, and has 

 a normal upper side and neuration. Similar examples have 

 been described in Papilio bianor (Proc. South Lond. Ent. 

 and N.H. Soc, 1888, pp. 39-40), and P. glaucolaus (Berl. 

 Ent. Zeitschr., 1908, liii, pp. 199-201). 



(2) An aberration of the male of P. thaiwamis from Formosa, 

 together with a normal male and female. Instead of the 

 hind-wing being rounded it is of the somewhat square shape 

 of the female, but even more pronounced, and it shows a 

 greater development of a tail. 



(3) Twelve specimens of the females of Agrias amydon and 

 A. muzoensis from Colombia, correcting the statement of 

 Fruhstorfer in Seitz that the female never has any blue mark 



