86 
THE WEEKLY ENTOMOLOGIST. 
however, that in all this granting of 
powers and wishes, we are overshoot- 
ing the mark. What we want is facts. 
Now it is a fact that Daplidice has 
been taken at Grange, in North Lan- 
cashire. To get there, after landing 
on any part of the coast opposite to 
South Europe, it must have flown 
two hundred miles, at least, over every 
sort of country in England, and to do 
this, and still be in fine order is im- 
possible, so the “immigration” the- 
ory, won’t do in this case. 
For my part, I cannot understand 
what is called the steady course of 
Bceticus from South to North. Is it 
meant that a large flight of them 
started North, and that one stopped 
here, and another there, until they 
reached at length to England. ? I 
rather opine the great impulse given 
to Entomology on the Continent, by 
the publication of cheaper and better 
works, has set the wits and the nets 
of our continental friends to work, and 
they have turned up species not 
hitherto known in their localities, and 
that it is j ust possible that the Bceticus 
said to have been taken in England 
is a mistake, — just as was the report 
of the capture of Hera last year on 
the Highbank between Ruabon and 
■Wrexham. Mistakes will happen etc. 
Let us now take another lino of 
argument. Suppose Bceticus and 
Daplidice do fly over,— and the Van- 
ess idee also, — let us ask how it is that 
only Bceticus and Daplidice, and our 
well established Fanessce come ? Why 
do not other species, never yet blamed 
for coming ( in the same Genera ) 
come with them ? Why do not P. 
Callidice and v. Bellidice come ? or 
some of the Ccenonymphoe ? This is a 
long genus, well represented here in 
specimens : or, why do not V. V — 
album, X. Ichnusa or prorsa come? 
C. S. Guegson, Stanley Grove, Liver- 
pool. Oct. 25th, 1862. 
To be continued. 
DIPTEKA. 
Anthomyia Betce. Curtis . — The 
Mangold Wurzel crops in this neigh- 
bourhood suffered very severely last 
year from what was popularly called 
a “blast,” which was generally attri- 
buted to lightning. The leaves of 
the plant were covered with deep 
brown patches, spread over the entire 
surface, the leaves soon becoming 
useless as supporters of the plant. 
This year I have examined, very 
closely, the leaves of a crop of Wurzel 
in my garden, and I found all the 
leaves which were infected were suf- 
fering from the ravages of a grub, 
whose history is briefly this ; — the 
parent lays her eggs on the underside 
of the leaves. They are white and 
oblong, and generally laid in groups 
of three or four. When they are 
hatched, the grub ( which is a miner) 
eats its way between the outer coats 
of the leaves, feeding on the inner 
rind thereof. The leaves when de- 
prived of their inner rind, die, and the 
grub after attaining its full size, 
buries in the earth, where it passes 
its pupa state. The pupa is of a 
copper brown color. 
