) VIXSOXIA STELLIFEEA. 



Fig. 10. Empty puparium of male (dorsal). X 25. 

 Fig. 11. Puparium of male with portions broken 



away, revealing the imago within (ventral). X 25. 

 Fig. 12. Female larva (first stage of test), x 25. 

 Fig. 13. The same in a more advanced stage. 



x 25. 

 Fig. 14. Male puparia, natural size, in situ on leaf 



of Cypripedium. 



GEXUS PULVIXAIIIA (Targioni-Tozzetti). 



Adult females naked; ovisac secreted at period of 

 parturition, not enveloping the insect. 



Puparium of male inseparable from the puparia of 

 Lecanium. This genus comes very near to Lecanium, 

 and is only separable from it by the formation of a 

 cottony ovisac below and behind the posterior extremity 

 of the" body of the adult female at the period of par- 

 turition. In typical forms, such as P. vitis, Linn. (PI. 

 XLV, fig. 1), the ovisac takes the form of a pad, upon 

 which the body of the female rests, with the exception 

 of the cephalic extremity, which remains firmly 

 attached to the food-plant (PL XLV, fig. la). In such 

 forms as P. floccifera, West. (PL XLVIII, fig. 1), the 

 ovisac is very elongate, being from five to eight times 

 the length of the body of the female. 



All the stages of the male, including the glassy 

 puparium, as well as those of the female up to the time 

 of parturition, are inseparable from those of Lecanium, 

 so that in the absence of the ovisac it is quite impos- 

 sible to fix this otherwise conspicuous genus. 



SYNOPSIS or SPECIES. 



A. Ovisac short, forming a large pad partly beneath the 

 posterior extremity of the adult female. 



(i) . . . VITIS and var. EIBESLE. 



