G2 
MU. J. B. BRIDGMAN ON HYMENOPTERA IN THE 
intention to giv’e a paper on general entomology, but simply a few 
notices of occurrences, and to conclude with some notes and a table 
of the genus Glypta , G., one of the genera of Ichneumons belong- 
ing to the family of Pimplides. 
My collecting this year has been done almost entirely in the 
neighbourhood of ^Norwich, because I have not had time to get 
away, except on the bank holidays, and I am sure I need hardly 
remind you of the wretched weather we had here on the summer 
bank holidays. I should think Whit — or, as it might be called, 
wet — Monday will be long remembered in this county. 
When I published my list of Sawflies in our Transactions for 
1 S88, 1 introduced Croesus septentrional is with some doubt, because 
I was not certain where the specimen Mr. F. Norgate gave me 
came from. I am sorry to say this last summer I have taken the 
larvae from the Birch trees on Mousehold. Five males emerged 
in August, and I have no doubt more of them will come out in the 
spring. I say I am sorry I met with them, because they often do 
so much mischief ; they are gregarious, and feed on the edge of the 
leaf, generally very close together. They hold the leaf with their 
forefeet, and elevate their bodies in the air in the form of an 
elongated £; three or four will be at work on one edge of a leaf 
at a time ; and so thoroughly do they do their work, that where they 
have been nothing is left but the bare twigs and leaf-stalks. 
I took all I could find of them, to save the trees as much as 
possible. 
I have also bred in numbers Fenusa ulmi and F. pumilio ; the 
former is abundant in Elm leaves. This genus of Sawflies lay their 
eggs in the leaves of plants ; and the larvae when hatched live and 
feed between the tissues of the leaf, leaving the outer cuticle intact. 
From F. ulmi I have not yet succeeded in breeding any parasites. 
F. pumilio lives in the larval state in the leaves of the Raspberry, 
to which they often do much damage ; they are also found in the 
leaves of the Bramble. I have found that they seem to prefer 
large rather woolly leaves. I do not know if it is a variety of 
a distinct species of Bramble. From this Sawfiy I have bred 
a small Ichneumon, Grypocentrus albipes , B. I believe this is the 
first time it has been bred. I also found on the Birch trees, on 
Mousehold, the larvae of another of these mining Sawilies. The 
trees were literally infested with them. They aro easily seen, when 
