TRIBE DIASPIDINI 341 



pair of lobes with mesal margins straight or slightly di- 

 vergent, not adjacent, hatchet-shaped, longer than second 

 lobe, lateral margin with two notches; plates small, 

 arranged 0, 1, 3, those of each lateris arranged 1-1-1; 

 margin with six altaceratubae on each side; brevacera- 

 tubae few in number, not in crescentic transverse rows; 

 genacerores 2-4(8-13)8-15. This species is given this place 

 only because of its original reference. North Australia on 



Pandanus. pseudaspidistrae Green. 



dd. Pygidium with two median lobes together broader than long, 

 e. Pygidium with anus and vulva superimposed; median pair 

 of lobes moderately produced, lateral margins oblique, two 

 notches, forming three subequal crenulations; plates longer 

 than lobes, arranged 0, 7, those of each lateris arranged 

 1-2-2-2; genacerores 12-18(15-19)13-17. Natal, Africa on 



Altermanthera. cyanogena Ckll. 



ee. Pygidium with anus and vulva not superimposed, 

 f. Pygidium with anus located cephalad of vulva. 



g. Pygidium with median pair of lobes broader than 

 long, margin strongly crenulate, with three depres- 

 sions; second pair of lobes incised, mesal lobelet 

 enlarged and subtruncate at distal end; third pair 

 of lobes wanting; plates large; vulva located between 

 postgenacerores and caudad of anus; genacerores 8-8 



(23-23)12-15. French Guinea, Africa on Eleis 



marchali Ckll. 



gg. Pygidium with median pair of lobes projecting dis- 

 tinctly beyond distal end of second pair, 

 h. Pygidium with three rows of brevaceratubae, 

 about four oraceratubae in each half of each row; 

 median pair of lobes large, crenulate, broader 

 than long; second pair of lobes minute, incised; 

 plates long, arranged 0, 2, 7, those of each lateris 

 arranged 2-1-1-3; altaceratubae five on each side; 

 genacerores 11-20(20-27)16-22; oblong chitinous 

 thickening laterad of genacerores; mesospira- 

 cerores represented by conspicuous groups; in- 

 sects living in small pits at base of veins on under- 

 side of leaves. Ceylon on Elaeocarpus 



scrobicularum Green. 



hh. Pygidium never with three rows of brevacera- 

 tubae, rarely with two partial rows, 

 i. Pygidium with genacerores 6-8(11-15)10-15; 

 median pair of lobes prominent, crenulate; sec- 

 ond pair of lobes small, incised; plates stout, 

 longer than lobes, arranged 0, 1, 6, those of 

 each lateris arranged 1-1-1-3; altaceratubae six 

 on each side; brevaceratubae one on each side 

 of fourth and three on each side of fifth row; 



