581 



PAPERS READ. 



REVISION OF AUSTRALIAN LEPIDOPTERA. 



By E. Meyrick, B.A., F.Z.S. 



V. 



The present paper practically concludes the Australian Geome- 

 trina, except in so far as future discoveries may produce fresh 

 material. The alterations of generic nomenclature which will be 

 found in it, and the substitution of the family name Selidosemidae 

 for Boarmiadae, are necessary, and will be understood by reference 

 to my paper on the classification of the European Geometrina, 

 which will, I hope, appear in the Transactions of the Entomo- 

 logical Society of London for the current year. Hence I shall 

 not in general discuss them here. 



The classification of the Selidosemidae is difficult, owing to the 

 fact that in this family many structural characters are often 

 different in closely allied species, and others vary greatly within 

 the limits of the same species. Much judgment is therefore 

 required in selecting suitable points on which to lay stress for 

 distinction, so that the genera may be at once definable and 

 natural. The results given are the outcome of considerable 

 labour, and I think will be found satisfactory on the whole ; but 

 in some instances too little material has been available to make 

 sure of accuracy. The neu ration is in some genera very variable, 

 in others constant, but I have in all cases examined every speci- 

 men that could be obtained ; where variation has been found, it 

 is always mentioned. 



