336 THE COCCIDAE 



shaped, arranged 0, 1, 6; genacerores in five 

 almost contiguous groups, arranged 4-7(11-18) 



26-32. South Africa on Leucadendron 



leucadendri Brain. 



hh. Pygidium with median pair of lobes short, conic- 

 al, separated by slight wedge-shaped depression; 

 second pair of lobes incised, mesal lobelet longer 

 and larger than lateral, lateral short, wide, round- 

 ed at caudal end; each lateris with its margin 

 prolonged and thickened in three places, probably 

 altaceratubae, plates tapering, very long, situated 

 caudad of lobes and prolongations of margin, ar- 

 ranged 0, 1, 4, those of each lateris arranged 

 1-1-1-1; genacerores 4-4(19-20)25-30. South Aus- 

 tralia on Xanthorrhoea xanthorrhoeae Fuller. 



gg- Pygidium with second pair of lobes incised, mesal 

 lobelet larger than lateral, often approximating a 

 median lobe in size; median pair of lobes well de- 

 veloped, distant, separted by distance about equal 

 to width of median lobe; plates prominent, arranged 

 0, 1, 4-5, those of each lateris arranged l-lor2-2; 

 latadentes located in median and second incisurae 

 and associated with plates of lateres; lateres cleft at 

 intervals, margin denticulate; genacerores 5-7(9-14) 

 7-14. District of Columbia on East Indian bamboo... 



howardi Cooley. 



dd. Pygidium with distance between median pair of lobes more 

 than twice width of a median lobe. 



e. Pygidium with median pair of lobes subquadrangular, 

 mesal and lateral margins parallel, caudal margin trans- 

 verse, with three teeth; second pair of lobes distinct, in- 

 cised, lobelets long, slender, caudal ends rounded, mesal 

 larger than lateral; plates only slightly longer than lobes, 

 arranged" 0, 1, 2, those of lateris placed one near second 

 lobe and other distant and very small, other plates may 

 be present; dorsal oraceratubae numerous on all parts of 

 body, arranged in regular series on pygidium; genacerores 



10-10(26-32)30-42. Niger, Africa on Xymenia 



nigerensis Vayss. 



ee. Pygidium with median pair of lobes triangular, pointed, 

 lateral and mesal margins oblique and concave, shouldered 

 on proximal portion, about as broad as long; second pair 

 of lobes incised, mesal lobelet similar in form to median, 

 as large or larger than median, lateral lobelet triangular, 

 small, one-third size of mesal lobelet; plates twice as long 

 as lobes, proximal portion stout, arranged 0, 1, 2, those 

 of each lateris distant; lateres irregular; genacerores 7-8 

 (18-23)34-40. South Africa on aloe margaritae Brain. 



