(eevee 3) 
came from pupze which as soon as formed were removed to a 
refrigerator and kept there for fifteen days, being afterwards 
subjected to the same treatment as the other lot of pup. 
These emerged August 8—15th and showed one var. prorsa, 16 
between portma and prorsa—6 ¢ gs and 10 9 9s—2 ab. 
porima, both 3 3s, 16 intermediates between prorsa and the 
type levana—4 4668 and 12 9 9s, of which several 
approached very nearly to the typical brood—levana. 
Dy, T. A. Cuapman showed specimens of Avraschnia levana, 
type, bred 1907, to give a fuller view of this form in assist- 
ance to Mr. Sheldon’s report. He said the palest specimens 
were probably the result of leaving the pupe at a temperature 
at or below 54° till the butterflies were nearly ready for 
emergence ; but on the whole they are probably not far from 
normal /evana, the darker being chiefly 3 ¢, the paler 2 9°. 
Mr. SHeipon also showed strings of the ova in situ on 
nettle, these being base to apex, and in position resembling 
those of Polygonia c-album. 
Exotic CockroacH FRoM Krw.-——Mr. G. J. Arrow exhibited 
a specimen of a handsome exotic Cockroach (Dorylxa 
rhombifolia) found alive in the Natural History Museum. 
He remarked that he had seen this species there several years 
ago but had not captured it. The present specimen was 
found in a different part of the building by Mr. T. Sherrin, 
on Nov. 16th. It is an apterous species inhabiting China, 
India, Madagascar, 8. Africa, etc. and has also been recorded 
from ‘Tropical America. 
TEMPERATURE EXPERIMENTS ON TROPICAL BurrERFLIEs.— 
Lieut.-Col. N. Manpers exhibited a collection of some 200 
specimens of tropical butterflies belonging to the genera 
Melanitis, Mycalesis, Atella, Papilio and Catopsilia, which 
had been subjected to abnormal degrees of temperature in 
the pupal stage. The object of the experiments was to 
ascertain the effect of climate on the colours of tropical 
butterflies. He said that with the exception of Mr. Mar- 
shall’s experiments on certain 8. African butterflies literally 
nothing had been done as far as he knew in the laboratory 
in relation to this question. He himself held the view 
tentatively, that certain cases believed to be examples of 
a 
. os «he 
