12 
circular outline. The test in S. simulans is formed of small adventitious 
particles, both organic and mineral, cemented by a cliitino-argillaceous base. 
A thin section of the test showed a cavernous interior, containing an irregular 
nodular fragment, itself probably of organic origin. 
Occurrence. — Stacheia simulans is not uncommon in the decomposed 
limestone from Wollong, New South Wales. 
Genus — ENDOTHYRA, Phillips. 
Endothyra bowmani, Phillips. 
(Plate 1, Pigs. 13a, c.) 
Endothyra Powmani, Phillips, 1845, Proc. Geol. Tech. Soc. West Hiding Yorks., vol. 11, 
p. 279, PI. VII, Fig. 1. 
E. Powmani, Phillips, Brady, 1876, Mon. Carb. and Perm. I'oram. (Pal. Soc.), p. 92, PI. V, 
Figs. 1-4. 
Observations . — The specimen in our series representing the above 
species is fairly characteristic. It is slightly crushed on one side, and apparently 
surface-corroded to some extent, 'there is an especial interest in meeting 
with this typically Carboniferous Limestone fossil of the northern hemisphere 
in Australia. 
Occurrence . — In the decomposed limestone of Wollong, New South 
Wales. 
Endothyra macella, Prady, sp. 
Involutina macella, Brady, 1869, Rep. Brit. Assoc., Exeter Meeting, pp. 379, 382. 
Endothyra macella, Brady, 1876, Mon. Carb. and Perm. Forarn. (Pal. Soc.), p. 98, PI. V, 
Figs. 13, 14. 
Observations . — This species is somewhat rare in the British Carbon- 
iferous rocks; it is interesting to meet with this form here, which one of us 
has already separated from the Irish Carboniferous Limestone shale of Castle 
Espie. The chief characters are the emaciated test, as compared with other 
species of the genus, and its thin peripheral edge. 
Occurrence . — Not uncommon in the washings from the decomposed 
limestone of Wollong, and Pokolbin No. 3. 
