(. } xx 7) 
that at present only the larva of a single species (Cleroden- 
dronella), was known; but Lord Walsingham had well shown 
that the botanical genus Clerodendron occurred in all the 
parts of the globe, whence specimens of these insects had been 
received, and now that the attention of collectors had been 
called to this fact, there was a better prospect of our learning 
the early stages of other species. Mr. Stainton also observed 
that as the genus Butalis had been alluded to more than once 
in the remarks of Lord Walsingham, he ought perhaps to 
mention, that he had never been able to persuade himself that 
it was rightly placed amongst the Hlachistide ; in his idea, 
the more robust habit of the imago, and the general appear- 
ance and habit of the larva, ill accorded with such a location. 
Mr. F. Merrifield read a paper entitled ‘‘ Incidental Observa- 
tions on Pedigree Moth-breeding.”” He said the forced Selenia 
illunaria of the fifth generation of 1887, exhibited as larve 
at the meeting in December, 1887, had come to an end. 
Thirty moths appeared between Dec. 26th and Jan. 28th, 
showing signs of deterioration. From one pair of these he 
had 179 eggs, which turned red and were exposed to winter 
cold until 14th April, when they were forced. On the 17th 
they changed colour, showing the young larve through the 
shells, but never actually hatched. This would seem to 
indicate that this insect, which now hybernates as a pupa, 
might possibly under changes of climate hybernate as an 
egg. As tothe larger size of the male S. dllunaria in the spring 
emergence, suggested last year, subsequent measurements on 
a large scale confirmed it; the excess was small, but it com- 
pared with a large excess in the opposite direction in the 
summer emergence. He had tried experiments with refer- 
ence to the effect of high and low temperature on the larva, 
as well as on the pupa. It appeared that the temperature 
most conducive to development of size of the larva in 
8. illunaria and illustraria was one rather higher than that of a 
warm Enelish summer. All his unforced broods of both 
species in the very cold summer of 1888 were decidedly - 
smaller than the corresponding ones of last year, and the pro- 
portion of healthy insects pupating and emerging was con- 
siderably less. This could not be ascribed to interbreeding, 
