58 



E. ERNEST GREEN. 



A still smaller and less conspicuous species than the last. On Pandanus odora- 

 tissimus, Koolpiniyah, N.T. (Hill, 13), and Darwin, N.T. (Hill, 636). Associated, 

 in the former case, with Hemichionaspis pseudaspidistrae, and in the latter with 

 Aspidiotus destructor. 



Chionaspis dilatata, Green. 



On Pandanus odoratissimus, Koolpinyah, N.T. (Hill, 14, 15). 



Chionaspis graminis, Green, var. near divergens. 

 On grasses, Darwin, N.T. (Hill, 433). 

 Differs from the Ceylon form in the narrower and more pointed pygidium. 



Hemichionaspis minor, Mask. 



On Grevillea heliosperma (Hill, 20), and on Sisal Hemp (Hill, 21), Darwin, N.T. 



Hemichionaspis pseudaspidistrae, sp. nov. 



Puparium of female either translucent brownish ochreous or opaque white. These 

 two forms are quite distinct and do not grade into each other. Large groups of each 

 colour may occur in close juxtaposition on the same leaf, without actually inter- 

 mingling. Resembling, in colour and form, the puparia of H. aspidistrae and H. minor 

 respectively. Pellicles pale stramineous. Length 1*75 to 2 mm. 



Male puparium white, strongly tricarinate. Length 1 mm. 



Fig. 5. Hemichionaspis pseudaspidistrae, sp. u. ; pygidium 

 of adiilt ?, X 280. 



Adult female very similar to that of H. aspidistrae. Margins of abdominal segments 

 moderately produced. Pygidium (fig. 5) with prominent median lobes which are 

 distinctly separate or even slightly divergent, and indented at two points on the 

 outer margin ; lateral lobe single, slender, dolabriform. Circumgenital glands in 

 five groups : median with from 2 to 4 pores, upper laterals 8 to 13, lower laterals 

 8 to 15, averaging 4-10 and 12 respectively. Dorsal oval pores few. Length 

 averaging 0*75 mm. 



On Pandanus odoratissimus, Koolpiniyah, N.T. (Hill, 13, 14, 15). 



