549 



NOTES AND EXHIBITS. 



Mr. Froggatt exhibited specimens of two species of Scale 

 Insects and parasites bred therefrom; with the following Note: — 

 "About Sydney leery a purchasi is not a common coccid, seldom 

 being found in more than twos or threes upon the small branches, 

 chiefly of Acacia discolor, in the bush. This year my colleague 

 Mr. H. G. Smith had a young tree of Acacia haileyana in his 

 garden at Tempe covered with this scale, and he brought me a 

 large spray swarming with adult females, which I enclosed in a 

 box. From these I bred some hundreds of small chalcid 

 parasites ( Euryischia lestojjhoni, Riley), and also a number of 

 dipterous parasites (Cryptochaeton iceryce, Willist.). At my 

 request, Mr. Smith observed the coccids in situ, and he soon 

 found them falling off; and before very long they were all dead. 

 No lady birds (Coccinellidce) or their larv^ were seen upon the 

 tree, which was cleared of the pest by the minute parasites above 

 mentioned; and it seems evident that in this part of Australia 

 we owe much more to these parasites than to their coleopterous 

 enemies for our immunity from the cottony cushion or fluted 

 scale insects as serious pests. The Floridian scale (Icerya rosece, 

 Riley and Howard) has been very plentiful upon the foliage of 

 the Grevilleas and Hakeas on the Illawarra line, and from them 

 I have bred the same species of dipterous parasite, and numbers 

 of the secondary parasite, a chalcid that is parasitic upon the fly 

 larva? Ophelosia crawfordi, Riley, and is therefore not an enemy 

 of the scale insects." 



Mr. AVaite sent for exhibition a specimen of Peripatus 

 leuckartii, Sang., from Colo Vale, near Mittagong, and recorded 

 localities for other sjDecimens, including some collected by Mr. C. 

 J. McMasters at Moree. As Peripatus has been supposed hitherto 

 to be confined to the table-land and coastal districts, its occurrence 

 so far inland as Moree is particularly noteworthy. 



Professor David exhibited mounted and bulk specimens of 

 diatomaceous earth, sanidine tuff^, trachyte, and trachyte ash 



