152 



igog 2i'54 per cent, of the pale and 78'46 per cent, of the 

 black form. Ao:ain, selected black moths were paired, and 

 large batches of ova deposited, but a tendency to a weakness 

 that had been noticed in the former brood, in that many of 

 the eggs deposited did not hatch, although full opportunity 

 had been given for second or subsequent pairings, became 

 more manifest in this generation ; but such larvae as came 

 forth from the eg^, and got through their first moult, were 

 healthy, and in due time produced moths, the whole of the 

 igio emergence being of the black form. These also were 

 paired, and full batchesof ova obtained, but the proportion that 

 produced larvse was very small, probably not exceeding 

 5 per cent. The majority of the larvae, instead of feeding 

 slowly through the autumn and hibernating, fed up rapidly, 

 and produced eight undersized moths, all of the black 

 form, in October and November, this rapid feeding up 

 possibly being an additional sign of weakness in the brood, 

 five larvae only going into hibernation. These results appear 

 to show that, although it is possible by pairing black with 

 black, to produce entirely black broods, as soon as such 

 broods are obtained they begin to loose vitality, and the race 

 soon dies out." 



Mrs. Hemming exhibited a long series of Mclitcea aurinia, 

 bred from larvae taken in Wiltshire in igio, where the 

 species is somewhat common. There were also a number 

 of examples caught on the ground from which the larvae of 

 the bred series were taken. 



Mr. Hemming exhibited a series of Adopaa flava {linca), 

 taken in Sussex in igio, showing two distinct forms, one 

 pale with narrow marginal border, the other dark, and suffused 

 with wider border. On behalf of Mr. P. A. Buxton, he 

 showed another series of M. aurinia, bred from the Wiltshire 

 locality. Of this series, all the emergences took place in the 

 afternoon, while in the case of Mrs. Hemming's series this 

 was not so. 



Mr. Coote exhibited two very dark green examples of 

 Panolis piniperda, with normally coloured examples for 

 comparison. 



Mr. W. J. Kaye exhibited a specimen oi Myclohins nuwina, 

 an extremely large sphingid-like Pyrale, from S. America, 

 which flew in numbers around the arc lights at the Alto da 

 Serra station. 



Mr. Step exhibited a series of photographs by himself and 

 Mr. West (photo-micrographs), illustrating Brefeldia maxima, 

 one of the Myxogastres, and made the following remarks : 



