West Australian Coccidse. 469 



been found in the orchards of West Australia, though it is 

 particularly common on imported Citrus fruits. 



84. Mytilaspis grisea, Maskell. 

 Common on various Eucalypts. 



85. Mytilaspis g lover i, Pack. 



The same remark that applies to M. fulva applies to 

 this species also. 



86. Mytilaspis ■poinoruiii, Bouche. 

 The freedom of the orchards of the colony from this 

 species is remarkable, it having been found in only one 

 instance on an apple tree at Mount Barker, an isolated, 

 inland district. 



87. Mytilaspis syinosa, sp. n. (Plate XV, figs. 4, 5.) 



Scale of ? wliite, of a woolly texture, broadly pyriform, generally 

 curved. Exuvise yellow. Length 0-075, width O'OS inch. 



Adult 5 brown, sub-elliptical ; abdomen ending in a slight, 

 median depression upon either side of which is an inconspicuous, 

 conical lobe. Between the lobes there is a pair of small spines and 

 beyond them 3 others. Five groups of circumgenital, multiocular 

 pores ; median 2 — 3, upper laterals 7 — 9, lower laterals 10 — 15. 

 Antennae represented by a pair of small, horny processes. There 

 is a large group of circumrostral pores, and upon the margins between 

 each antenna; and the last segment are 4 groups each of 5 large, 

 conical spines. 



On Melaleujca sp. Swan River. 



88. Mytilaspis elongata, sp. n. (Plate XV, fig. 44.) 



$ scale grey, very long and narrow. Length 0"18, width 0'025 

 inch. 



Adult 5 elongate ; last segment broadly rounded and presenting 

 the following characters : 6 conspicuous lobes, median pair wide, 

 sides parallel, somewhat truncate with 2 small notches on the lateral 

 margin near the apex ; second pair wide deeply incised on the lateral 

 margin, apex of lobes truncate, lobule conical ; third pair short, 

 wide with 2 small notches at the apex ; beyond the third lobes two 

 thickenings of the margin ; spines small ; 2 hairlike plates between 

 the median lobes, one between them and the second lobes, a broader 

 one between the second and third lobes and 2 tapering and conspic- 

 uous plates before the thickenings of the margin. On the margin of 



