BY( A. B. WALKOM. 



119 



It is in these beds that the lowest horizon for marine fossils in 

 the series is found. About halfway up the series, and about 2,000 

 feet from the base of the marine series,* there is a zone in which 

 Ptycomphalina trifilata, P. nuda, and Gangamopteris are found, 

 the first-named being particularly abundant. This zone is exposed 

 in a small quarry on the road, about half a mile north of Lochin- 

 var Railway Station. 



A little higher up in the mudstones, fossils become much more 

 abundant, and the following have been found: — ■ 



Tribrachiocrinus sp 

 Indeterminate crinoid. 

 Crinoid stems. 

 Fenestell <(?) inter nata. 

 F.(%) fossula. 

 Stenopora tasmaniensis. 

 Spirifer duodecimcostata. 

 S. stokesi. 

 S. avicula. 

 Martiniopsis subradiata. 



var. morrisii. 



cf. morrisii. • 



Productns cor a v&r.farleyensis, 

 Strophahsia jukesi. 

 Chonetes sp. 



Merismopteria, sp.nov. 



Aviculopecten sprenti. 



A. tenuicollis. 



A. englehardti. 



A. sp. 



Deltopecten subquinquelineatus- 



D. farleyensis. 



Mceonia sp. 



Pleurophorus. 



NotomyafV). 



Pachydomus. 



Mourlonia. 



Ptycomphalina trifilata. 



Platyschisma. 



Conularia. 



Edmondiai ?) nobilissima. 



In the sandstone patches, near the top of these mudstones, fos- 

 sils are abundant, and comprise the following : — 



Spirifer vespertilio. Pleurophorus sp. 



S. tasmaniensis. Pachydomus. 



Martiniopsis subradiata. Mourlonia rotundatum. 



Chcenomya sp. Keeneia (juv.). 



* On p. 322 of Professor David's Memoir, this is stated as 3,000 feet; it 

 is probably a misprint, as on the vertical section accompanying that work, 

 it is shown as about 2,000 feet. 



