OF VICTORIA. 127 



It is the scourge of the aphis and other noxious insects, 

 when there is no fruit upon the tree, giving special at- 

 tention in the wild timber to the Acacise. I will quote a 

 case beyond my own knowledge of its special service. Mr. 

 W. H. F. Hill writes, in the Victorian Naturalist : — 

 " Amongst the birds the Silver-eye, Zoster ops cmrulescens, 



^m-- 



Fig. 29. Silver-eyes and Nest. One-tifth natural size. 



is the chief enemy of the Case Moth, destroying the young 

 larva3 in great numbers. Indeed, but for these useful little 

 birds the Case Moths might easily become a serious insect 

 pest, as they threaten to be in the various city parks and 

 enclosures where the Silver-eye does not dare to go." 



