Gr. H. F. Nutt all 
159 
clinging to the cloth or hair upon which the insect has emerged, as in 
the Mayfly; this anchoring of the moult insures against accidents during 
the act of emergence. When the adults issue, the abdomen appears 
1_i_i-1-1 - . .1 
Ob mm 
Fig. 12. Pediculus humanus (corporis). Empty third larval skin from which an adult 
has emerged. Dorsal aspect, together with a frontal view of the head-parts of the 
moult showing the position of the eyes and antennae. The old tracheae are omitted. 
short, broad, and curved dorsally behind; after a time they lengthen 
to out their normal dimensions and gradually darken. 
Although Bacot (n. 1917, p. 235) states that the males undergo the 
