174 



THE COCCIDAE 



hh. Body of adult female with lateral portions per- 

 pendicular, edge of dorsal portion overlapping at 

 top like roof of house; antennae of second 



nymphal stage of female with seven segments 



Platysaissetia Ckll. 



ff. Abdomen of adult female with anal cleft and opercula 



located near middle of dorsal aspect. 



g. Body of adult female spherical with opercula located 



near middle of length of body; antennae minute, 



consisting of eight segments in adult female and of 



six in first nymphal stage, anal ring of first nymphal 



stage with seven anal ring setae; dorsum of adult 



female and of nymphs not with two cephalic and two 



caudal groups of cerores Cryptes Mask. 



gg. Body of adult female not spherical, flat and cor- 

 rugated, with opercula located near middle of length 

 of body; antennae of adult female consisting of nine 

 segments and of first nymphal stage of six; dorsum 

 of female in all stages with two prominent cephalic 



and two caudal groups of cerores 



Hemilecanium Newst. 



ee. Body of adult female flat and convex, never spherical, 

 never with alveolae, but always with tesserae; antennae 

 of adult female with eight segments; anal ring with six 



anal ring setae Eucalymnatus Ckll. 



dd. Adult female with margin of body fringed with flattened 

 setae or scales; antennae consisting of eight segments; anal 



ring with six anal ring setae Paralecanium Ckll. 



bb. Adult female with legs and antennae, when present, all or in 

 part rudimentary, one or both wanting. 



c. Adult female with body not greatly elongated, lateral margins 

 strongly convex, never subparallel; anal cleft and opercula dis- 

 tinct. 



d. Body of adult female convex, sometimes approaching hemis- 

 pherical, never spherical. 



e. Body of adult female convex, sometimes approaching 

 hemispherical, fringed with long slender, spear-like mar- 

 ginal setae; legs and antennae wanting Ericerus Westw. 

 ee. Body of adult female always convex, not approaching hem- 

 ispherical, not fringed with slender spear-like marginal 

 setae. 



f. Body of adult female with margin of dorsal aspect 

 divided into twenty plates of which one is cephalic, one 

 is about the anus, four are spiracular, and others are 

 intermediate in position; legs are wanting, antennae 



tuberculate; anal ring with ten anal ring seate 



Houardia Marchal. 



ff. Body of adult female with dorsal aspect never divided 

 into plates; legs and antennae rudimentary, latter con- 



