TRIBE DIASPIDINI 339 



middle of groups of genacerores ; mesospiracerores 3-4; altacera- 



tubae present; genacerores 6-8(23-28)28-36. Uganda, Africa _.___ 



chionaspiformis New si. 



aa. Pygidium with two plates adjacent to median pair of lobes; median 

 pair of lobes fused for half their length, deep lateral notch and 

 mesal indentation, forming two prominent rounded lobules; other 

 lobes wanting; plates longer than lobes, arranged 0, 7-8, those of 

 each lateris arranged 2-l-2-l-lto2 ; each lateris with minute tooth- 

 like projections between groups of plates; group of 5-7 setae near 

 spiracles ; dorsal oraceratubae in rows ; altaceratubae few in number ; 



genacerores 6-11(17-26)20-32. Uganda, Africa on Cassia 



cassiae Newst. 



SPECIES OF GREENASPIS 



Body of adult female elongate, six or more times as long as wide, head 

 and thorax constituting over one-fourth of length of body, sides of 

 caudal segments of preabdomen strongly produced and bearing two 

 or three plates; pygidium with median pair of lobes prominent, di- 

 vergent, mesal margins emarginate; second pair of lobes incised, 

 mesal lobelet truncate, much larger than lateral; plates stout, 0, 1, 5-6, 

 those of each lateris arranged l-l-l-2to3; genacerores 4-6(8-10)10-10; 

 mesospiracerores 1-2; anus located slightly cephalad of vulva. Ceylon 

 on Arundinaria. elongata Green. 



SPECIES OF TENUIASPIS 



Body of adult female small, averaging less than one millimeter; seg- 

 ments of preabdomen without plates; pygidium with median pair of 

 lobes projecting, minute, narrow, bluntly rounded; second pair of 

 lobes incised, minute, inconspicuous; plates comparatively large, twice 

 as long as the lobes, arranged 0, 1, 7-8, those of each lateris arranged 

 l-l-l-4to5; altaceratubae four on each side; brevaceratubae located 

 only near altaceratubae; genacerores 4-6(9-12)8-8; mesospiracerores 

 represented by small group of pores; anus located twice its width 

 cephalad of vulva. Ceylon on Tetranthera minuta Green. 



SPECIES OF UNASPIS 



Body of adult female long and narrow, about three times as long as 

 wide, caudal portion widest; pygidium with median pair of lobes pro- 

 jecting, wedge-shaped, lateral margins free, distal ends truncately 

 rounded, entire; second and third pairs of lobes incised, lobelets 

 wedge-shaped, mesal lobelet larger than lateral, margins entire; plates 

 short and stout, arranged 0, 0, 0, 4, those of each lateris arranged 

 1-1-2; altaceratubae six on each side; brevaceratubae numerous, prom- 

 iscuously arranged; genacerores 4-4(6-7)4-5; mesospiracerores repre- 

 sented by small group; anus and vulva superimposed. Ceylon 



acuminata Green. 



SPECIES OF LINEASPIS 



Pygidium with median pair of lobes plate-like or spine-like, short, dis- 

 tance between them four times their length; second pair of lobes normal 

 in form, broader than long, broadly rounded; other lobes wanting; 



