BY R. J. TILLYARD 721 



Family E L AT E R I D ^:(?) 751 



E/aferidinm (n.n.) aufjuMtins, n.sp. ... ... ... ... 751 



Family T e n e b r i o n i d ^. 752 



Adt/idinm coirlafiim, n.g. et i^p. ... ... ... ... ... 752 



Familj^ M ALACO D E R M I D iE 752 



Mtfrorhynchites grandifi, n. sp. ... ... ... ... ... 753 



Order Hemiptera, Suborder Homoptera. 



Family Psyllid^ > 753 



Ti'ia)<>iop!iy}hi phciQklt><, n.g. et sp. ... •... ... ... 754 



Triassic Insects IncertiB Sedis ... ... ... ... ... ... 754 



Note on a Silurian Fossil ... ... ... ... ... ... ... 756 



Introduction. 



In 1916, Mr. John Mitchell, late Principal of the Newcastle 

 Technical College, very kindly sent me the fos.sil insects in his 

 collection, for study. The collection consisted of thirty-six speci- 

 mens, of whicli twenty-five were from the VVianaraatta Shale 

 deposits of Narellan and Glenlee, ten from the Upper Coal- 

 Measares of the Newcastle District, and a single specimen from 

 Silurian strata. This last, as might be expected, proved, on 

 examination, not to belong to the Insecta. In forwarding these 

 specimens, Mr. Mitchell also told me that the most perfect speci- 

 men of all, from the Coal-Measures, was not included in the 

 collection, as it had been stolen during an exhibition of the 

 specimens at Newcastle. 



Several of the specimens forwarded do not belong to the 

 Insecta, while there are a number that are too fragmentary to 

 enable me to place them at all definitely. When all these have 

 been eliminated, there remain twelve specimens which I con- 

 sidered it worth while to name, figure, and study in detail. Of 

 these, eight are from the Wianamatta Shale, and four from the 

 Coal-Measures. The other specimens are dealt with more briefly, 

 under the headings of Insects Incertse Sedis, for their respective 

 geological horizons. The numbers, by which the specimens are 

 alluded to, are those affixed to the actual specimens by Mr. 

 Mitchell. The specimens carry no other labels, unless such are 

 specially mentioned. To each specimen which I have made the 

 type of a new species, I have affixed a label in my own hand- 

 writing, indicating that fact. 



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