470 Mr. C Fuller on some species of 



each body segment are groups of conical spines. Circumgenital 

 pores arranged in an almost unbroken, horseshoe-shaped arch. 

 Median group of 7, upper laterals 10 — 12, lower laterals 10 — 12. 

 On Banksia ilicifolia. Perth. 



Genus Poliaspis, Maskell. 



Characters : — $ scale elongate, exuviae terminal. Adult 

 $ with more than 5 groups of circumgenital pores. $ 

 puparium narrow, larval skin terminal. 



89. Foliasjjis nitens, sp. n. (Plate XV, fig. 47.) 

 Scale of $ pyriform, broad, convex, generally straight. Exuviae 

 light, reddish-yellow, the second being lighter than the first ; remain- 

 der of scale pure, silvery white. Length 0-09, width 0035 inch. 



Adult 5 elongate, yellow. Last segment broadly rounded ; 

 median lobes very short and wide, forming the sides of a slight 

 depression ; beyond this there is on each side a simple, tapering 

 plate and a somewhat deep incision from the much thickened base of 

 which rises a conical lobule (?) ; beyond "this again the margin is 

 crenulate and bears another simple plate. Tliere are 7 distinct 

 groups of circumgenital pores, 6 arranged in opposite pairs, the 

 seventli median and anterior to the more anterior laterals, median of 

 3 — 4, anterior laterals 7 — 8, intermediate laterals 15 — 17, posterior 

 laterals 16 — 20. No rudiments of antennse. 

 (J puparium white, with a faint median carina. 



On Bavisia sp., Swan River. The species differs from 

 P. exocarpi in the number and arrangement of the group 

 and in the number of pores in each. 



90. Poliaspis intermedia, sp. n. (Plate XV. fig. 46.) 



5 scale pyriform, generally curved, very convex, white. Length 

 0"06, width 0'03 inch. Exuvioe terminal, light yellow. 



Adult 9 yellow ; last segment bearing two fairly conspicuous, 

 tapering median lobes, and beyond eacli 3 equal-sized, conical 

 lobules, beyond these are 2 simple plates between which 2 small 

 rounded lobules may be seen. Eight groups of circumgenital pores, 

 6 arranged in opposite pairs, and 2 median, the more anterior being 

 before the anterior laterals and the second before the intermediate 

 laterals : the first median of 2 — 4, second median 3 — 5, anterior 

 laterals 7 — 8, intermediate laterals 9 — 14, posterior laterals 20 — 25. 



On a Leguminous plant. The scales are much duller 

 than those of P. nitens, and the insects cluster together in 



