307 



ON LEAIA MITCHELLI, Etheridge, fil., FROM THE 



UPPER COAL MEASURES OF THE 



NEWCASTLE DISTRICT. 



By R. Etheridge, Junr. 



(palieontologist to the australian museum, and geological 

 Survey op N. S. Wales.) 



At the present time but one fossil genus of Phyllopocla is known 

 from the whole of Australia, viz., Estheria, comprising two species. 

 The first discovered was Estheria Goghlani, Cox, from the Estheria 

 Shales, above the productive Upper Coal Measures, obtained from 



several bores in the Sydney District. The second species was 

 collected by Mr. J. H. Simmonds, of Brisbane, in the Ipswich 

 Coal Measures, and communicated by him to the writer. It does 

 not appear to differ from Estheria mangaliensis, Jones,* of the 

 Damuda beds of Central India. 



It has often been a matter of conjecture to the writer and 

 several geological friends how to account for the absence, under 

 such favourable conditions, of Estherice, from the vast accumula- 

 tions of estuarjne and swamp deposits represented by our Upper 



* Mod. Foss. Estheriaj (Pal. Soc), 1862, p. 78, pi. ii. f. 16-23. 



