250 
MONOGRAPH OF THE LABOULBENIACE^ 
purposes 
of dete 
should be mounted in tight pill-bo 
avoid the depredat 
A little cotton in the box pr 
of Anthrenus and 
of 
on the herbarium 
insect collections. 
host, as well as its parasites, from b 
jured by falling about when moved. Care should also be taken that the insect is kept 
cleau and free from dust particles or exudations from its own body. Otherwise, it is 
often difficult or indeed impossible to detect the parasites when needed for examina- 
I 
tioii. 
I 
V 
* ■ 
\ ^ 
K 
