ASTEROLECANIUM VAEIOLOSUM. 157 



Coccus quercicola, " Sign ; " Judeicli and Mtsche, 



Lelirbucli der Mitteleur.-Forstinsektenkunde, 



vol. ii, p. 1252 (1895).* 

 Planchonia quercicola (Bouche), Maskell ; Trans. 



N.Z. Inst., vol. xxviii, p. 396 (1895). 

 Asterodiaapis variolosus, Boas ; Dansk. Forstzoologie, 



1896-98, p. 395.* 

 Planchonia (Asterolecanium) quercicola (Bouche), 



Froggatt ; Dep. of Agr. Sydney, N.S.W., 



Miscel. Pub., No. 175, p. 6 (1897). 

 Asterodiaspis quercicola (Bouclie), Newstead; Coc- 



cidse of the Brit. Isles (Ray Soc.), vol. i, pp. 1, 



14, 34, 35, 36, 39 (1900). 



Ovisac of old adult female (PI. LXI, figs. 10, 13) 

 broadly ovate or subcircular, slightly attenuated 

 behind; anal opening transverse, narrow, and partly 

 filled with secretion ; very convex above, shining, with 

 the surface faintly rugose. Fringe opaque glassy- 

 white, but usually matted together, irregular, and 

 sometimes entirely wanting in very old examples. 

 Ventral surface convex, but less so than the dorsal 

 surface, and also much less transparent. Colour vary- 

 ing according to the age of the enclosed insect ; in the 

 summer, when the insect fills the test, it is of a uniform 

 yellowish-green, or sap-green (PL LXI, fig. 11) ; in 

 early spring the colour changes to yellowish-brown or 

 dark brown ; and later in the year the anterior portion 

 covering the body of the dead female changes to 

 madder-brown or brownish-black, with the posterior 

 portion covering the eggs or their effete skins greenish- 

 yellow (PL LXI, fig. 13), the line of demarcation 

 between the two colours being often quite abrupt. 

 The empty ovisac is more or less golden-yellow with a 

 faint tinge of green. 



Diameter, 1-2 mm. 



Ovisac of the young adult (PL LXI, figs. 11, 12) 



* This part of the synonymy is from Cockerell, ' Proc. Acad. Nat. Sciences, 

 of Philadelphia/ 1899, p. 269. 



