PLATE II. 



12. Pscudococcus 'nipae (Maskell) ; penultimate and anal lobe cerarii (left) and ventral side of 



anal lobe (right). 



13. Pscudococcus maritimus (Ehrh.); penultimate and anal lobe cerarii (left) and ventral side 



of anal lobe (right). 



14. Phcnacoccus eriogoni n. sp. ; penultimate and anal lobe cerarii. 



15. Phcnacoccus artemisice Ehrh.; penultimate and anal lobe cerarii (left) and ventral side of 



anal lobe (right). 



16. Phenacoccus artemisiae Ehrh.; cephalic margin of the body of immature specimen. 



17. Phcnacoccus stachyos Ehrh.; penultimate and anal lobe cerarii (left) and ventral side of 



anal lobe (right). 



18. Pscudococcus quercicolus n. sp. ; penultimate and anal lobe cerarii. 



19. Pseudococcus timberlakei Ckll. ; penultimate and anal lobe cerarii (left) and ventral side of 



anal lobe (right). Except for the ventral side of the anal lobe this figure will apply 

 equally well for Trionymus californicus Ehrh. 



20. Phenacoccus coletnani Ehrh.; a, penultimate and anal lobe cerarii (left) and ventral side of 



anal lobe (right) of the typical form; b, anal lobe cerarius of an extreme form. 



21. Phenacoccus solani n. sp. ; penultimate and anal lobe cerarii; a, disproportionately enlarged 



dorsal body seta. 



22. Phcnacoccus stachyos Ehrh. ; various modifications of the ducts. 



