( cxxii ) 



Exhibitions. 



Insects from Java. — Mr. A. H. Jones exhibited on belialf 

 of Mrs. Walsh a number of insects from Java, nearly all of 

 which were taken by her in her garden and grounds at Soeka- 

 boemi. There were a number of small Heterocera unnamed 

 and a varied collection of insects of other orders preserved 

 in spirits, accompanied in several cases by insects parasitic 

 upon them. This collection, which was also mostly unnamed, 

 promises to be of considerable interest. 



British Aleurodidae.— Mr. C. B. Williams exhibited a 

 series of coloured drawings of the pupal cases of the British 

 Aleurodidae executed by Mr. H. G. Osterstock. The follow- 

 ing species were represented : Aleurodes {sensu lato) immacu- 

 lata, A. phillyreae, A. vaporariorum, A. proletella, A. ? quercus, 

 A. ruhicola, and an unidentified species from a greenhouse at 

 Wisley ; also two photographs ( X 6 diameters) of adults and 

 pupae of A. ])hillyreae on a hawthorn leaf. 



Notes on breedinc4 from a Melanic Race of Boarmia 

 gemmaria. — Mr. R. Adkin exhibited several families of 

 Boarmia gemwaria, and gave the following explanatory notes. 

 From a black female captured in 1907 a brood was reared in 

 1908, which gave 60 % Black and 40 % Typical. Black was 

 paired with Black and produced in 1909 a brood consisting 

 of 77 % Black and 23 % Typical. Again Black was paired 

 with Black and resulted in 1910 in a brood wholly Black, 

 but which showed evident signs of constitutional weakness. 

 However, Black was again paired with Black, but resulted in 

 1911 in only two males and three females, all of them 

 Black. For convenience in the following tables I will call 

 this Brood X. 



In 1910 I was fortunate in again obtaining ova from a 

 captured Black female, and in rearing from them in 1911 a 

 brood consisting of 33 % Black and 67 % Typical. This I 

 call Brood Z. 



From the stocks thus obtained various cross pairings were 

 made as set out in the following table together with the results 

 obtained, given in percentages of Typical and Black and the 

 sex percentage in each. 



