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out to me as particularly noticeable in Pier is napi, which some of our 
members have been breeding largely. Doubtless the weather again 
has been responsible for the absence of our occasional visitors, or 
perhaps has prevented the possibility of a solitary migrant perpetuating 
the species for a time. In support of that, I may say that a friend of 
mine had put out some foreign larvae of V. antiopa in Norfolk during the 
early summer, and as far as I know none of the imagines have been 
seen. It may have been an interesting experiment in some ways, but 
from a collector’s point of view the advisability of the experiment is 
somewhat doubtful. 
The result of endeavouring to establish insects in new localities is 
by no means uniformly successful, even in cases where environment 
and climate seem all that can be desired. I have been told that many 
attempts have been made to colonize K. vespertarici in positions in 
Yorkshire similar to the original habitat, but in all cases the attempts 
have proved useless. Personally, I never remember having the 
satisfaction of seeing a new colony established by my own planting. 
I once put out a large number of Z. filipendulae on what seemed to me 
a likely spot, but I have never seen the sign of another since the day I 
put them out. And I have also put out Liparis dispar, and these also 
never occurred again. Perhaps one of the most successful results at 
colonization that I have ever heard of was that of Limenitis sibylla 
having been taken from St. Osyth, in Essex, to the woods a few miles 
to the west of Ipswich, by one of the old Ipswich collectors named 
Seaman. I never knew Seaman personally, for his collecting was 
about finished when mine began, but it was a tradition handed down 
that he brought sibylla to these woods, and certainly the insect was 
steadily increasing for many years when I used to work the district. 
I first took it there in the Sixties, when, if we saw half-a-dozen 
specimens during the day, we thought them fairly numerous. By 1885 
the insect simply swarmed, and in 1894, when I was last there, it was 
still to be found in large numbers, and now, I am told, it has extended 
its range considerably beyond where I used to take it. Strangely 
enough, this seems to be the only insect which, to my knowledge, has 
increased in numbers within the last forty years in that locality. My 
old companion, the late G. Garrett, of Ipswich, who was nearly forty 
years my senior, often used to sigh over the lost species of his early 
days, which occurred in this favoured spot, some of them being sinapis, 
atlialia, promissa , sponsa, quadra, and versicolor, while I have seen 
disappear, or almost so, iris, paphia, and adippe. It may be that 
when an insect is newly introduced into a locality which is favourable 
to its well-being, that the rate of increase is augmented by the absence 
of its parasite, which might explain the increase of sibylla, while so 
many other species disappeared from the same district. It seems as if 
Callimorpha hera was a parallel example, although I have no very 
reliable data to go on. It is believed by many entomologists that hera 
was artificially introduced into Devonshire, and I think that there can 
be no doubt that it has considerably increased in numbers of late years, 
and also that it has extended its range very considerably. I believe 
our friend Mr. Burrows has, to some extent, succeeded in introducing both 
C. hera and A. sulphuralis to his own district, as certainly one wild hera 
has been seen, and last year two sulphuralis were taken at light a short 
distance from where the lame were put out two years before. This 
