12 NOTES ON A COLLECTION OF PLANT IMPRESSIONS. 



Intimately associated with these shales occur fossiliferous 

 mudstones and impure limestones identical with similar 

 deposits in the Mersey, and throughout the eastern part of 

 Tasmania. 



The more numerous fossils in these beds are the 

 following : — 



Spirifera Tasmaniensis. 



avicula. 



convoluta. 



Sanguinolites Etheridgei. 



Fenestella internata. 



plebeia. 



Protoretepora ampla. 



Stenopora Tasmaniensis. 

 There can be no doubt, therefore, that these beds are the 

 equivalents of the Coal Measures of the Mersey, and there 

 is some hope that Mr. Jones may be successful in his search 

 for coal in this neighbourhood. 



Lignite Beds. 



Mr Jones informed me that the Coal Measures at the 

 Henty are flanked by beds of lignite, and among the 

 specimens sent to me were several small fragments of lignite, 

 no doubt obtained from the same place. On examination I 

 was successful in obtaining casts of two or three new leaf 

 forms. One of the forms is undoubtedly a species of Fagus with 

 very minute leaves, closely allied to the existing Fagus Cunning- 

 hami of Tasmania. Another is a well-preserved impression 

 of the phyllodium of a species of Acacia, closely resembling 

 the existing Acacia melanoxlyon. 



Descriptions of the principal forms of the Lower Coal 

 Measures, together with these of the Tertiary lignites, are 

 given hereafter. 



One of the forms I have named Fagus Jonesii, in honour of 

 Mr. Jones, to whom we are indebted for their discovery. 

 Another has been named Acacia Meiringii, in honour of Mr. 

 Meiring, to whom also I am indebted for placing such a fine 

 collection at my disposal. The close resemblance which these 

 two forms bear to existing species, incline me to the opinion 

 that the lignites at this place are of a more recent date than 

 any other lignite formation hitherto described. 



GrLOSSOPTERIS BROWNIANA. 



Jj'rond lanceolate-elongate, obtusely acuminate ; costa 

 thick, gradually diminishing, but extending to the apex ; 

 veins, close parallel, ascending from costa acutely, at an angle 

 of about 50 deg., and gradually curving outwards, where they 

 emerge at an angle of 30 deg. Anastomoses, long and 



