84 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 
EXPLANATION OF FIGURES 
ABBREVIATIONS 
a.o.—Anal orifice. 
ce.p.s.—Cephalic pair of postanal sete. 
ce.s.—Cephalie pair of anal sete. 
¢.p.s.—Caudal pair of anal sete. 
d.p.—Denticulate wax pore. 
m.s.—Middle pair of anal set. 
s.—Ordinary sete. 
Sete of conical type. 
w.p.—Triangular type of wax pore. 
S.C. 
All figures are drawn with a camera lucida, x660. 
Figure 1. The anal ring of P. agrifoliae Essig. In this and the succeeding figures 
of anal rings the cephalic end of the ring faces the top of the page. 
Figure 2. Anal ring of P. obscurus Essig. 
Figure 3. Anal ring of P. crawii Coq. 
Figure 4. Anal ring of P. citri Risso. 
Figure 5. Anal ring of P. longispinus Targ. 
Figure 6. Lateral view of the posterior conical seta of an anal cerari of P. 
longispinus. 
Figure 7. Lateral view of conical seta of an anal cerari of P. crawii. 
Figure 8. Surface view of an anal cerari of P. agrifoliae. 
Figure 9. Head or first cerari of P. agrifoliae. 
Figure 10. First or head cerari of P. citri. 
Figure 11. Anal cerari of P. citri. 
Figure 12. Head cerari of P. crawii. 
Figure 13. Anal cerari of P. crawii. 
Figure 14. Head cerari of P. obscurus. 
Figure 15. Anal cerari of P. obscurus. 
Figure 16. Head cerari of P. longispinus. 
Figure 17. Anal cerari of P. longispinus. 
