DISCUSSION OF GENERA AND SPECIES 



25 



iobes become almost obliterated. Anal ring borne at the inner end of a 

 short invagination, consisting of a simple, irregular, chitinized ring which 

 bears no setae. Body with a few stout, sharply pointed spines (Fig. WD) 

 at the margins. Extending almost around the ventral side of the body 

 is a broad zone containing many tubular ducts which have the inner ex- 



Fig. 10. Kermes cockerelli Ehrh. ; A, antenna of adult female ; B, adult female be- 

 fore the hardening of the derm ; C, pore from ventral cluster ; D, dorsal spine ; 

 E, wax duct. From specimen from topotype material. 



tremity reflexed into a very deep and narrow cup (Fig. 10). Behind 

 the posterior legs are numerous clusters of circular, multilocular pores 

 of the type shown in Fig. IOC. 



In the penultimate stage (Fig. 115) the body is oval in form and 

 shows small anal lobes. The lateral margins are beset with numerous 

 slender spines. The antennae (Fig. 11D) are 6-segmented as in the adult 

 but much slenderer. Anal ring with six setae. Tubular ducts lacking. 



