TRIBE ASPIDIOTINI 463 



ee. Pygidium of adult female with mesal truncate projection 

 not bearing setae, sides constricted, much smaller triangu- 

 lar lobe-like projection on each side and adjacent to mesal 

 projection; margin of pygidium adjacent to these latter 

 projections with three or four rounded prominences; anus 

 large and prominent, not adjacent to margin; scale yellow 

 with a whitish secretion which persists only as a marginal 

 fringe; first nymphal exuvia deciduous. Ceylon on 



Carissa. pusilla Green. 



dd. Pygidium of adult female never with mesal projection. 



e. Pygidium of adult female with margin with six minute 

 thorn-like projections, arranged hook-like, three on each 

 side of meson extending laterad; margin cephalad of pro- 

 jections entire or gently crenulate; setae minute; anus 

 located slightly caudad of middle of pygidium; scale dull 

 reddish-brown, roughened with innumerable, slender, 

 curved, spine-like projections that are not soluble in caustic 



potash. Ceylon on Hemicyclia echinata Green. 



ee. Pygidium of adult female never with minute hook-like pro- 

 jections with long slender pseudolobes. 



f. Pygidium of adult female not with lacinate pseudolobes. 

 g- Pygidium of adult female with pseudolobes clavate, 

 pair on meson, pair on each side of these and distant 

 from mesal pair, adjacent to and cephalad of each 

 of these on each side, a broad triangular lobe-like 

 projection, then three clavate projections, a broad 

 triangular lobe-like projection, and finally three 

 irregular clavate projections; anus located about 

 midway between vulva and caudal margin, four times 

 its width from caudal margin; caudal end of pygi- 

 dium truncate. Ceylon on Psychotria 



spatulata Green. 



gg. Pygidium of adult female with large number of long, 

 slender, dagger-shaped pseudolobes, d,istal end al- 

 ways pointed, never clavate; setas of one surface 

 nearly as long as pseudolobes and of other surface 

 minute, hardly projecting beyond margin; anus lo- 

 cated near and caudad of vulva. Spain on Billartia. 



picea Leon. 



ff. Pygidium of adult female with median pair of pseudo- 

 lobes prolonged into lacinate processes with deeply ser- 

 rate distal ends, other lobes and here and there on 

 margin with smaller similar, projections; setae spine- 

 like, few in number; females not excreting any definite 

 and separate scale, congregated in numbers under gen- 

 eral mass of thin, whitish, curling, cottony threads; 

 second exuvia much larger than adult female. Australia 



on Syncarpia. syncarpiae Mask. 



cc. Pygidium of adult female without lobe-like or plate-like pro- 



