TRIBE DIASPIDINI 343 



ways with largest number; mesospiracerores 

 forming distinct group, sometimes with in- 

 conspicuous group of metaspiracerores. Asia, 

 Australia, France, England, eastern Canada 

 and United States, California, West Indies, 

 Brazil on Aspidistra, Acacia, Davallia, Cocos, 

 Cyanotus, Areaca, orchids, ferns, orange, fig, 

 mango, pepper-tree, etc aspidistrae Sign. 



jj. Pygidium with cephalic altaceratubae of each 

 side adjacent to lateral brevaceratubae of 

 fifth row. 



k. Pygidium with median pair of lobes promi- 

 nent, longer than broad, crenulate; second 

 pair of lobes minute, prominent; third pair 

 of lobes obsolete; plates comparatively 

 short, arranged 0, 1, 5-6, those of each lat- 

 eris arranged l-l-l-2or3; altaceratubae six 

 in number; brevaceratubae one on each 

 fourth and one on each fifth row near an 

 altaceratuba and double row of five or six 

 cephalad of fifth row; genacerores 6-11(14- 

 17)12-17; mesospiracerores represented by 

 small group. Chionaspis albizziae Green. 

 New Zealand, Japan, Ceylon, Florida, West 

 Indies, Panama, Brazil on Parsonia, Rhipo- 

 gonium, Hibiscus, Capsicum, Melia, Azed- 

 arch, Cycas, Pelargonium, Albizzia, Agave, 

 fig, cocoa-palm, cotton, pepper, orange, etc. 



minor Mask. 



kk. Pygidium with median pair of lobes broad- 

 er than long; scale with exuviae darker 



than in type. West Africa 



minor strachani Cooley. 



ii. Pygidium with genacerores 7-12(10-13)10-12; 

 median pair of lobes scarcely projecting, two 

 lobes together broader than long, strongly den- 

 ticulate; second pair of lobes incised, lobelets 

 narrow, equal in width, mesal longest; plates 

 longer than lobes, arranged 0, 1, 1-1, others 

 probably present on each lateris; anus approxi- 

 mately central in location; dorsal oraceratubae 

 few; scale whitish, almost colorless, more or 



less translucent. Bengal, India on Ficus 



minima Green. 



gg. Pygidium with genacerores 16-16(19-20)25-25; anus 

 about nine times its width from caudal margin; 

 median pair of lobes together broader than long, with 

 four crenulations, first two very deep and strong; 

 second pair of lobes quite rudimentary, not or hardly 

 extending beyond general margin; plates arranged 



