aphrophtfllum hallense and lithostrotion. 51 



Explanation of Plate. 

 Eucalyptus Culleni n. sp. 



1. Seedling plant with cotyledons. Alma-den. 



2. Buds. 



3. Fruits and mature leaves. 

 3a. Mature leaf, natural size. 



4. Reversion ("sucker") foliage. 



5. Bark on bole of tree nearly two feet in diameter. 



On APHROPHYLLUM HALLENSE, Gen. et Sp. Nov. 

 and LITHOSTROTION from the NEIGHBOURHOOD 



OP BINGARA, N.S.W. 



By Stanley Smith, m.a., d.sc, f.g.s. 



(Communicated by Professor W. N. Benson.) 1 



With Plates II -V. 



[Bead before the Royal Society of N. 8. Wales, July 7, 1920.~\ 



The remarks embodied in this brief contribution to Prof. 

 W. N. Benson's comprehensive study of the geology of the 

 Great Serpentine Belt, are based on the examination of a 

 small collection of rugose corals obtained by Dr. Benson 

 from the Carboniferous rocks within the Parish of Hall, 

 some sixteen miles south of Bingara, 2 and are contributed 

 in compliance with his request. The corals include a 

 cyathophylloid form, which I have described under the 

 name Aphrophyllum hallense, and representatives of the 

 widely spread genus Lithostrotion which are referable to 

 the species L. arundineum Eth. fil., and L. stanvellense 

 Eth. fil. 3 



1 It was not possible for Dr. Smith to check the proofs of his paper, 

 which had been carefully revised in MS. by Dr. W. D. Lang of the British 

 Museum. 



2 For an account of the geology of this area see W. N. Benson, " A 

 General Account of the Geology and Physiography of the Western Slopes 

 of New England." Proc. Linn. Soc. N.S.W., 1917, esp. pp. 241-2. 



3 Corals from the Coral Limestone of Lion Creek Stanwell, near Rock- 

 hampton.'Geological Survey of Queensland, Bulletin No. 12, 1900, pp. 19-20. 



