98 Second Report on Economic Zoology . 
chairs, and from them had invaded the sateen hangings on the walls. 
He stated that he had got rid of the chairs and had several times 
burnt sulphur in the room, but still found them in smaller numbers. 
He was informed that sulphur fumigation clears them out, and this 
has been found to be successful by many people, but it must be done 
as follows, namely (1) with complete air-tightness ; (2) in a dry room ; 
(3) the sulphur must be burnt twice or even three times at intervals 
of ten days, as the sulphur fumes do not affect the eggs of the mites, 
which must be allowed to hatch out. 
Another gentleman left materials used in upholstering in 
November that were much infested with small mites. The various 
substances were examined, and I found the pest to be the Common 
Household Mite ( Glyciphagus domesticus). There is little doubt that 
this mite lives mainly in the horsehair used in upholstery, feeding 
upon the unextracted juices. In this way we find they get into 
furniture — but the mites will feed on both dried animal and vegetable 
matter. Although they were found in braiding, canvas, wool, etc., 
left at the Museum, the horsehair had most. 
It is now found that sulphur fumes alone do any good in killing 
mites. Rooms in which the mites are should be well fumigated with 
sulphur, the material infested baked or similarly fumigated and then 
the room cleared out. Two fumigations are necessary, the second 
ten days after the first, so as to kill those that come from the eggs. 
C. ANIMALS INJURIOUS TO ROOD AND STORES. 
The Mediterranean Flour Moth. 
(Ephestia lcuhniella , Zeller.) 
Information was sent regarding the damage caused by the above- 
named moth in a mill at Stratford-on-Avon. The correspondent 
stated that the pest was a great nuisance, clogging the rolls by spin- 
ning its cocoons and sometimes stopping them. The webbing of the 
elevators gets covered with them also and stops working. “ I have 
two mills,” writes the correspondent, “ and they will not live in one 
that is damp.” The insects causing the annoyance in the mill were 
the Mediterranean Flour Moth [Ephestia Jcuhniella of Zeller). This 
insect is a great scourge when it once gets into a mill, frequently 
clogging the rollers and blocking up the machinery altogether. It 
invaded England in 1886, and has since spread considerably, being 
