/ 
Annual Report for 1913 of the Zoologist. 389 
were sent from a nest which had been taken and almost every 
worker was fonnd to have in its jaws the mangled remains of a 
“Crane-fly,” Or “ Daddy-long-legs,” whose grub is the very 
destructive “ leather- jacket.” The harm done by wasps is very 
obvious, but many people overlook the vast amount of useful 
work done by them. Every wasp grub is reared on insect food, 
and as the workers naturally take insects which are for the 
moment plentiful, their effect in reducing pests must be quite 
considerable. 
A new garden pest occurred in the form of a caterpillar 
which was reported as destroying hollyhocks and Michaelmas 
daisies by burrowing in their stems. On examination it proved 
to be the caterpillar of the “ Frosted Orange ” moth, Ochria 
( Gortyna ) ochracea. This caterpillar feeds in the stems of 
various succulent weeds, and its origin in this case was traced 
to a badly infested patch of thistles near at hand. 
Advice has often been given Avith regard to pests infesting 
houses and household goods and some more or less interesting 
cases of this nature were dealt with. 
In one case a house was invaded by grain weevils ( Galandra 
granaria). They were traced to a neighbouring granary which 
had lately been cleared out and the surviving weevils, deprived 
of their food, were wandering in search of more. 
Some maggot-infested bacon which was sent for examination 
was found to be attacked by the cheese-fly, Piophila casei , and 
not bv the more usual bacon beetle, Dermestes lardarius. 
Cecil Warburton. 
School of Agriculture, Cambridge. 
