Fig. 9. Pediculus humanus (corporis). Development of the larva in the egg. 
As described in the text. Drawings from living specimens. 
Note. A number of the points in this description have already been touched upon by 
previous authors; thus Wulker (1915, p. 628) gives five text-figures, tracing a develop¬ 
ment somewhat resembling that which I have figured; Jeanneret-Minkine (1915, p. 126), 
Widmann (18. vm. 1915, p. 293) and Muller (1915, pp. 44-47, pi. Ill, coloured figs. 9-15) 
also devote a few lines of description to the development. 
