Insects, etc., Injurious to Currants. 



229 



had some hope that similar good results might accrue here. So far 

 this has been a failure. 



A few minute Chalcididcc also feed on these scales, but unfortu- 

 nately they seem to make little difference in their numbers. 



Xewstead (1) says the second generation of the White Woolly 

 Scale becomes infested with these minute hymenoptera, which 



[F. V. Theobald. 



FIG. 174. A FUMIGATING BOX FOR BUSH FRUIT. 



increased in the third generation under observation to such an extent 

 that 50 per cent, of the Coccids were destroyed. This parasite is 

 known as Blastothrix sericea (Dalman), 



Many scales are destroyed by the Tits (Paridce), especially by 

 the Blue Tit (Parus cceruleus) ; but as they also help to spread several 

 of these enemies I am afraid that much of the good they do is counter- 

 balanced. Newstead also mentions the Cole Tit (P. ater), the Marsh 

 Tit (P. palustris), and the Great Tit (P. major} as feeding upon them. 



