84 



undertook to examine the genitalia of the five males in the 

 series. Shortly it may be stated that three of these proved 

 to be C. lychnitis, and the other two were C. verbasci. 



A male specimen of the so-called " scrophularia ,! from the 

 Kentish marshes was also sent to Mr. Fierce, and this he 

 found to have genitalia as in C. verbasci. 



Messrs. Harrison and Main exhibited, and read the follow- 

 ing notes on, a long bred series of Aplccta ncbulosa, and its 

 forms, var. robsoni and var. thompsoni. 



"As is well known, there are three forms of Aplecta 

 nebulosa occurring in Delamere Forest, viz. a grey form ; a 

 very dark form with grey fringes, known as robsoni ; and an 

 almost black form, with deep white fringes and white 

 crenulate margin, known as thompsoni. 



" From larvse collected in the forest we bred from 88 — 90 

 per cent, of the grey form, and 10 — 12 per cent, of robsoni. 

 The form thompsoni is very scarce ; it is difficult to give an 

 exact percentage, but perhaps about 1 in 500 is not far off 

 the mark. 



" We have been breeding this species with the idea of 

 seeing if we could obtain Mendelian proportions. In 1906 

 and 1907 we bred a considerable number from grey parents, 

 obtaining only the grey form. This year we have bred a 

 series from robsoni parents, and obtained 25 per cent, grey, 

 51 per cent, robsoni, and 24 per cent, thompsoni, or almost 

 exactly the proportions expected, if it can be assumed that 

 robsoni is a heterozygote. 



" If this assumption be correct, then both the grey and 

 thompsoni forms are homozygotes, and the results we obtained 

 when breeding from grey parents are as would be expected. 

 We have not yet succeeded in breeding from thompsoni.'''' 



They also showed a gynandromorphous specimen of Pieris 

 napi bred from N. Cornwall parents this year. Left side 

 male, right side female (Plate IV). 



Mr. Robert Adkin exhibited a series of Boarmia gemmaria 

 (rhomboidaria) , including typical and black forms reared in 

 1908 from ova obtained from a black female taken wild in 

 August, 1907, and a series reared from ova from a moth 

 taken at Lewisham, together with a portion of Edward 

 Newman's series of B. rhomboidaria (gemmaria), and of his 

 series of B. perfnmaria from the Entomological Club Col- 

 lection. In the course of his remarks he said that there 

 appeared to be no doubt that the specimens of B. perfnmaria 

 exhibited were the identical specimens that Newman had 

 put into the Club Collection during the time that it was 



