274 
MISCELLANEOUS NOTES AND OBSERVATIONS. 
XXL 
MISCELLANEOUS NOTES AND OBSERVATIONS. 
Macrogaster arundinis in Norfolk. — I have the pleasure of 
recording the capture at light, of one specimen of this interesting 
species on the 7th ult., near Horsey Mere. The Moth occurs in 
small numbers in the Cambridgeshire Fens, and in 1873 about 
a dozen eggs were introduced into Norfolk in an aldercar at 
Ranworth. In 1878 two specimens were taken within fifty yards 
of the same spot, and it was naturally concluded that these were 
the outcome or descendants of the ova. It is not known exactly 
how long the larva takes to feed up, but it is certainly more than 
one year, probably from two to three. Since that time no more 
have been taken, though the neighbourhood has been worked almost 
every season. The present capture, in a spot many miles distant, 
and without continuous communication of suitable ground, presents 
a curious problem. It seems incredible that the progeny of the 
original introduction, having disappeared from Ranworth, should 
have turned up at Potter Heigham ; it being contrary to all 
experience that Moths should shift their locality otherwise than by 
increasing in numbers, and occupying the intervening districts. 
When the Horsey and Hickling Fens have been better worked, we 
shall be more in a position to judge; but, at present, it seems only 
reasonable to conclude that arundinis is to be reckoned as an 
indigenous Norfolk resident, though probably lingering in very 
small numbers. 
I may also allude to one county speciality, Nonagria brevilinea , 
which has been this year somewhat more plentiful than usual. 
The species was discovered at Ranworth in 1864, and a second 
specimen taken at the same place by Mr. Barrett and myself seven 
years later. During the next few years it was taken very sparingly 
at Ranworth and Horning. The first capture in any quantity was 
in 1878, by Mr. Fletcher, and since then it has occurred in numbers 
fluctuating, but on the whole increasing all over the continuous 
stretch of fens from Wroxham to South Walsham. As long ago as 
1882 I found it at Barton, and it is now not very scarce there. 
