structure of the mouth-parts in the Body-louse 225 
explanation. The former is simply the thickened cuticular lining 
of the buccal cavity. The latter may be modifications of the 
ordinary labial hairs, or may be quite independent structures. 
Lice are capable of an infinite variety of processes of their 
chitinous cuticle. 
I have examined for comparison the mouth-parts of several 
other genera of Anoplura, though not in section; and I find them 
e be of the same general type, with minor differences in 
etall. 
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