lensis is giv 
— e only i eal aharaey available of 0. preterita — 
_ shows the leaf ay rel as long. Diagonistically, littlecan be said 
about the latter species by mere comparison of the leaves, to dis- 
criminate it from some congeners of the piles creation. In _ 
foliage it is nearly allied to our native O. ovalifolia (Cl. Richard, — 
in Memoir de VInst. de France, 1811, p. 78), but the leaves of the 
_ latter.are hardly ever so large, indeed u usually much smaller; the 
_ midrib is not so prominent, the areoles are also smaller and less 
: comaanaped quadrangular. Impressions of the bracteolar invo- 
lucre and fruit of O. preterita may turn up yet to carry these 
Nietpesioane still further. 
Nore.—Mr. F. H. F. Griffin, of Richmond, N.S.W., to whom the 
s University ie indebted for the fossil i mpression, informs me that he 
believ: e specimen — from the Pies Bush Quarry, on ‘the 
near to Pa 
. Ta : on 
found in the Hawkesbury Rocks, yp with fragmentary veg 
and leayes enclosed in the interbedded masses of Wianamatta ie 
shale, ~—A. Liversipcr, ne 
[One plate. | 
