TRIBE DIASPIDINI 345 



g. Pygidium with cephalic group of each lateris with 

 two plates, plates slender, arranged 0, 1, 1, 4, those 

 of each lateris arranged 1-1-2; median pair of lohes 

 moderately large, divergent, not confluent, entire; 

 second and third pairs of lobes incised, mesal lobe- 

 let truncate and larger than lateral, lateral lobelets 

 pointed, all entire; mesospiracerores present; breva- 

 ceratubae few in number; anus located less than its 

 own width caudad of vulva, nine times its width 

 from caudal margin; genacerores 16-16(25-33)16-23. 



Ceylon on Litzea. litzeae Green. 



gg. Pygidium with cephalic group of each lateris with 

 three plates, plates stout, dagger-shaped, arranged 0, 1, 

 1, 5, those of each lateris arranged 1-1-3; median pair 

 of lobes large, divergent, confluent, distal ends scarcely 

 projecting, minutely serrate; second and third pairs 

 of lobes incised, mesal lobelets larger than lateral, all 

 lobelets bluntly rounded, entire; mesospiracerores and 

 metaspiracerores present; brevaceratubae well devel- 

 oped; anus located seven times its width from caudal 

 margin and about its own width cephalad of vulva; 

 genacerores 12-16(28-34)18-24. Ceylon on Psidium, 



Actinodaphne. megalo'ba Green. 



ff. Pygidium with (10-23) pregenacerores present. 



g. Pygidium with third pair of lobes small or wanting, 

 incised, broad and short; median pair of lobes con- 

 fluent at proximal end, serrate, large; second pair 

 of lobes incised, mesal lobelet larger than lateral, 

 extends caudad about as far as median pair; plates 



! arranged 0, 1, 1, 5, those of each lateris arranged 

 1-1-3; altaceratubae three on each side, opening in 

 latadentes; genacerores 7-9(17-23)23-34. China, Cal- 

 ifornia at quarantine on palm cockerelli Cooley. 



gg. Pygidium with third pair of lobes large and well 

 developed. 



h. Pygidium with second pair of lobes incised, mesal 

 lobelet distinctly larger than lateral, lobelets 

 well developed, mesal lobelet broadly rounded 

 and lateral bluntly pointed, entire or obscurely 

 serrate; third pair of lobes large and well devel- 

 oped, incised, mesal lobelet distinct, lateral lobe- 

 let obscure or wanting; median pair of lobes 

 large, well developed, divergent, confluent, scarce- 

 ly projecting, serrate; plates dagger-shaped, those 

 of second incisurae very short, arranged 0, 1, 1, 

 4-6, those of each lateris arranged l-l-2or4; ora- 

 ceratubae of brevaceratubae with 2-3 in mesal 

 group of second row, third row 4-6 in mesal group 

 and 2-4 in lateral, fourth row 4-8 mesal and 4-6 

 lateral; genacerores 6-13(10-17)10-16. Kansas, 

 Japan on Rhus, sycamore platani Cooley. 



