183 
ANIMALIA. Class ANTHOZOA. 
Fam. Cyathophyllidae. 
Genus Cyathophyllum, Goldfuss. 
Cyathophyllum shearsbii, Siissmilch. (Plates XVIII., Fig. 7 ; XIX., Fig. 9). 
Gyatlio'pJiyllum shearsbii, Etheridge, jun., MS., 1904, Rec. Aust. Mus., 
vol. V., pt. 5, p. 288 (footnote). Siissmilch, 1914, Geology of New South 
Wales (figure only), fig. 14b, facing p. 44. 
Observations. —The present identification of this coral has been confirmed 
by means of an examination of some corals from Yass donated to the National 
Museum by Mr. A. J. Shearsby, F.R.M.S. It has not been described, but has 
been often quoted as Cyathophyllum shearsbii, Eth. fil. MS. As will be seen 
by the above reference, Mr. Siissmilch has figured a fine section of the coral 
which renders its identification with our Yass and Gippsland specimens 
indisputable. There are about 50 principal and 50 secondary septa in the 
coral. The dissepiments are numerous in the outer third and externally 
convex. Halfway towards the axis at the ends of the secondary septa, the 
dissepiments become vesicular in character, gradually disappearing towards 
the centre of the coral. The coral figured on plate XIX., fig. 9, is a little over 
2 cm. across. One average specimen from Yass measures 3 * *5 cm. 
It is of great interest to note that this coral is found in the Yass district, 
parish of Boambolo, associated in No. 1 Limestone with some corals similar 
to those of the Limestone Creek area where C. shearsbii occurs. Thus Mr. L. F. 
Harper has recorded^ from No. I Limestone— -Cyathophyllum shearsbii. Try- 
plasma dendroidea, Favosites gothlandica, Favosites (dendroid), Stromatopora, 
Pentamerus {Conchidium) etheridgei, and Spirifer sp. indet. The fauna noted 
here from the Mitta Mitta, as associated with C. shearsbii, are— Tryplasma 
dendroidea, T. vermiformis, Rhizophyllum enorme, Favosites forbesi, F. goth¬ 
landica, Heliolites interstincta, var. gippslandica and Fistulipora cowombatensis, 
Occurrence. —In grey limestone. Native Dog Creek (No. 2087. In fossili- 
ferous limestone, Cowornbat Creek (No. 2134). Silurian (Yeringian). 
Genus Diphyphyllum, Lonsdale. 
Diphyphyllum robustum, Etheridge fil. (Plate XIX., Fig. 8). 
Diphyphyllum robustum, Etheridge, jun., 1899, Rec. Geol. Surv. N.S. Wales 
vol. VL, pt. 3, p. 153, pi. XXXIL, figs. 1, 2 ; pi. XXXVIL, fig. 2. 
Observations. —The horizontal section of the corallite shown as above 
is indistinguishable from Etheridge’s Moore Creek specimens. The Moore 
Creek Limestone of New South Wales has been placed in the Tamworth 
series by Dr. W. N. Benson,^ and in his columnar section of the Devonian 
series of the Tamworth District,^ it forms the base of his “ Upper Middle 
Devonian.” The palaeontological evidence is therefore definite, notwith¬ 
standing some difficult problems as regards field relationships in the Victorian 
area of the Mitta Mitta. 
Occurrence. —'Fossiliferous limestone. Junction of Wombat Creek and 
Mitta Mitta River. Plan No. 3. (No. 2564.) 
^Records Geol. Surv. N.S. Wales, vol. IX., pt. 1, 1909, p. 40. 
* “ The Geology and Petrology of the Great Serpentine Belt of New South Wales.’’ Proc. Linn. 
Soc. N.S. Wales, vdl. XL., pt. 3, 1915, p. 551. 
* Idem ibid., p. 549. 
