West Australian Coccidas. 47S 



Genus Maskellia, Fuller, 



100. Maskellia globosa, Fuller. 



On Eucalyptus gomphoceyhala. Perth. (Agiicultural 

 Gazette of New South Wales, Vol. viii, p. 579, 1897.) 



Genus Aonidia, Targ.-Tozz. 

 101. Aonidia hanhsiai, sp. n. 



Scale of 9 circular, convex, grey ; the second of the exuviae shoWs 

 through the secreted portion and gives the whole a deep, orange-red 

 colour. Diameter 0'02 inch. 



Adult 9 almost circular, smaller than second stage. The abdomen 

 ending in a short, wide, chitinous segment with a medium depression 

 on either side of which faint, very short, wide lobes are occasionally 

 to be made out ; plates and pores absent ; there are 6 pairs of spines, 

 and a distinct fold in the margin of the segment beyond the third 

 pair on each side. 



The posterior end of the cast of the second stage seems to bear 6 

 conspicuous lobes, the sides of which are parallel and the apices 

 obliquely truncate and faintly crenulate. There are 2 plates between 

 the medium lobes, 2 between them and the second lobes, and 3 

 between the second and third lobes ; the sides of the plates are 

 parallel, the apex of each serrate, and they are the length of the lobes. 



^ puparium elongate, white or grey ; larval skin terminal, circular 

 and of a bright orange-colour, exhibiting on each side of the centre 

 2 groups of pores. 



Adult (^ short and wide, dark purple ; head small ; antennae 

 9-jointed ; thorax large and wide, with a medium line of white 

 colour ; abdomen short ; style stout ; wings large and wide. Length 

 0-04 inch. 



This is a very common species around Perth. It is 

 particularly abundant on Banksia attenuata and B. 

 menziesii, less so on B. prio7iotes, and only found in rare 

 instances on B. ilicifolia. Where groups of the scales 

 occur they are never crowded upon one another, and the 

 surface of the leaf all around is covered with a thin 

 "bloom " of white secretion. 



Claude Fuller, 



June 6, 1899. 



Explanation of Plate XV. 



[See explanation facing the Plate.] 



