30 THE ENTOMOLOGIST. 
thinking that they might be interesting to other readers of the 
magazine. 
The best locality for LZ. argiolus in the Midlands, with which 
I am acquainted, is Sutton Park, situated in the north-west 
extremity of the county of Warwick. The whole of its contents 
are estimated at about 2500 acres, not more than a third of 
which is occupied by woods, the remainder being divided into 
moorland, meadow, bog and lake. Hollies are the principal 
trees in all the woods, and in some places they almost rival the 
oaks in their majestic height, while, on the other hand, there is. 
scarcely any ivy whatever. Now, it is well known that the larva 
of L. argiolus feeds upon the flowers of both holly and ivy where 
they occur, but whereas ivy is almost entirely absent from Sutton 
Park, I think we may safely assume this as the reason that there 
is only one brood in the season of the butterfly there, which fact 
I stated in the ‘ Entomologist ’ (vol. xix., p. 13). 
I used formerly to attribute the absence of a second brood 
to the exposed situation of the locality—Sutton Park being about 
600 feet above the level of the sea, and forming part of the 
highest table-land in England. I have recently, however, had 
reasons for entirely changing my views on this question. Learn- 
ing from several sources that only one brood of the butterfly 
occurs in the year in such a southern locality as the New Forest 
in Hampshire, and that ivy is also scarce there, I have arrived 
at the conclusion that it arises from the same cause as in Sutton 
Park. It will be interesting to know in what other localities 
LL. argiolus is single-brooded where ivy is not to be found, and 
how under other circumstances it maintains itself. When I first 
commenced my explorations in Sutton Park a few years ago, 
discovering an absence of ivy I took the hint to search for the 
larvee of a supposed second brood on the flowers of the bramble, 
which comes into full blossom just about the right time, but 
hitherto I have entirely failed to trace the slightest connection 
between the two, and know of no one who has done so; it has 
since, moreover, been proved to be useless, a second brood of 
the butterfly not having been known to occur here at all. I may 
mention that bramble is very plentiful in most of the woods, 
where it composes a thick undergrowth. I have occasionally 
observed L. argiolus settle on the flowers of the mountain ash 
and crab-apple, but could never discover any signs of larve 
