PLATE LIII 



Figure 1. Ctenocephalits feUs, $ . To illustrate the external 



anatomy. The manubrium of the clasper is overlapped 



by the ninth sternite. x 40. 

 Figure 2. The terminal segments of Ctenocephalus felis, ? . 



The dotted line on the eighth tergite indicates the 



extent of the ninth sternite, which lies below it. 



xl 10. 

 Figure 3. The claw as seen when flattened out. Note the 



serrations and the chitinous pad at the base. 

 Figure 4. The ninth tergite of the 3 of same, showing the 



manubrium, and pygidium. x 240. 

 Figure 5. The anal stylet of the ? of same, x 300. 

 Figure 6. The antenna. It is segmented only on the posterior 



surface. 



