may IS ree h 
311 
as Agnostus elkedraensis and Microdiscus significans.(20) The 
pr to wa d is the deserted cattle station of Elkedra, in 
. 21? S., Long. 1352 
1903. Cit. J W. Grois. in a paper entitled “‘The 
Heathcotian: a Preordovician Series and its Distribution.''(20 
Notasaphus fergusont. e expressed the opinion that my 
inesus ida comprised two forms, one of which he names as 
above, and further, that the deposit was not of Cambrian, but 
of Ordovician a pa 
ai. inches in length . usually attributed to yi gui 
burrows, and are common in s ee rocks. Ther 
is no reason for supposing from these specimens that the ook 
is older than Cambrian or Lower Silurian.'' (22) 
Mr. E. Lidgey, in a report(?? on de. general geology of 
the Heathcote Parish and others contiguous, refers to ''mica- 
ceous mudstones containing casts of Trilobites," members of 
these Lower Silurian rocks occupying rather less than one- 
fourth of the area reported on. 
An important survey was made by Mr. W. H. Ferguson 
“for the purpose of defining the boundaries of an outcrop of 
Cambrian strata known to occur in the parish of Knowsley 
East. The Trilobite beds outcrop along the valley of Lady 
Creek and consist of ‘‘micaceous mudstones very rich in fos- 
sils.” From Mr. Fer erguson’s remarks it is clear that the 
geology of this district is complicated and obscure. (24) By the 
late Mr. T. S. Hall these bed rocks were regarded as of Lower 
Silurian age, “but low down in the series near the Cambrian 
orizon.' 
1904.—A further discovery of trilobite remains had 
been made about this time by Mr. Thomas Stephens s (29 at the 
Florentine Valley, Humboldt Divide, West Tasma nia. The 
fossils, casts of small Brachiopods,- as ‘well as those previously 
1902, (20) rapt VE «Off. Contributions," etc., Nos. 12 and 13, 
pl. 
ss (a) Pitot Proc. Roy. Soc. Vict., xv., (n.s.), pt. ii., 1903, 
(22) McCoy: Vict. Ann. Rep. Secy. Mines, 1891 (1899), p. 30. 
(23) Lidgey: Geo. Survey Vict., Progress Report, viii., 1894, 
pp. 44 and 45. 
(24) sigon x Seid Vict. (ns), No. 2, Monthly 
Progress Report, ouk 23-95. 
y (25) Etheridge: prin gee y, DE a 1904, p. 98, pl. x. 
