Art. XL — Additional Notes on tlic Lilydak Limestone. 

 By Rev. A. W. Cresswkll, M.A. 



[Read 14th September, 1893.] 



The only additional information in regard to the Stratigraphical 

 Geology of Lily dale that I have to record is that about half a 

 mile to the west of the strike of the Limestone of Cave Hill, and 

 running conformably with it, i.e. a few degrees to the east of 

 north, and to the west of south, and dipping from 30° to 45° east, 

 is a series of mudstones, shales, and shaly sandstones yielding a 

 profusion of fossils, mostly casts, but very well preserved, 

 specimens of which are to be seen on the table. 



Among the Brachiopoda are "Leptagonia deltoidea," "Lep- 

 toena spj," "Orthis subquadrata" and "elegantula," "Spirifer plica- 

 tellus," " Pentamerus Australis " and " Rhynchonella Strick- 

 landi % " Among the Lamellibranchiata the most common form is 

 "Pterincea sub-f alcata " or an allied species. Of the Gasteropoda 

 " Bellerophon Cresswelli " (Etheridge) is a common form. And 

 of Cephalopoda., " Orthoceras ibex," and "capillosus" are species 

 that are both well represented. The Trilobitidoe are represented 

 by " Homalonotus Harrisoni," tails of which are very common, 

 and Crinoid stems of the Actinocrinus type are also very 

 abundant. 



The fossils are easily obtained by splitting the shales along the 

 planes of stratification, and the places which I have visited and 

 from which I have procured specimens are : — 



(1) A point on the Mooroolbark Road close to the gate of 

 entrance to Mr. Kinsella's farm, where the shale or mudstone is 

 exposed under the overlying basalt in a cutting. 



(2) On the old Melbourne Road, near the top of the hill, about 

 half a mile above Lilydale, in the stuff thrown out of a sinking 

 for a tank at Mr. Wilson's. 



(3) About three miles to the north of the last mentioned point, 

 and about fifteen chains to the west of the road that leads past 

 the cemetery (N. and S. road) at an old quarry, known as 

 Hughes' quarry. 



