156 Flies [cu. 
Remedial Measures. 
The best method is to try and prevent the flies from 
laying their eggs on the sheep’s nose by covering it with 
a strong smelling substance such as tar. 
A method has been suggested in which the sheep 
smear themselves. They are supplied with a box of 
salt to which they have access through holes, about 
2 inches in diameter. These holes are then painted 
over with tar and in this way when the sheep lick the 
salt their noses become covered with the tar or prepara- 
tion used. When known to be infested they should 
be isolated about the middle of April so that the 
maggots which are sneezed out may be destroyed. 
A pasture which has become infested from sheep 
containing the maggots should be kept free from 
sheep during June and July. 
Sheep Maggot. 
The small maggots found on sheep are the larvae 
of two green bottles, Lucilia sericata and Lucilia 
caesar, and the larger ones are those of the blue bottle 
(Calliphora erythrocephala). The smaller ones do the 
most damage as they dig deeper into the flesh. Lambs 
suffer more than older sheep, being attacked in the 
parts around the tail, on the shoulders, and also on 
the poll. Hot and damp weather seems to favour 
the attack. 
The affected sheep can usually be picked out by the 
continual wagging of their tails. They also rub and 
bite themselves to try and get rid of the irritation. 
