76 
Class ANTHOZOA. 
Genus Cannapora, J. Hall. 
Cannapora australis, sp. nov. 
Plate III., figs. 6, 7 ; PI. VIII., figs. 17, 18. 
Specific Characters .—Corallum of large size, forming tabulate, reef¬ 
like masses. Corallites at first horizontal, repent, subsequently giving 
off closely arranged vertical corallites. The vertical corallites are circular 
or sub-circular when free, with dilated orifices, to polygonal (generally 
hexagonal) when in contiguity with the neighbouring corallites. Horizon¬ 
tally expanded corallites form distinct layers or platforms at more 
or less regular intervals of about 3 to 5 mm., and from this layer emanates 
a dense vertical growth of tubular coralites. Diameter of the latter varies 
from .35 to .7 mm. Septa short, spiniform, numerous (number not 
definitely ascertainable owing to indifferent preservation in this, respect, 
but apparently about 12.) Tabulae abundant, very irregular; straight, curved 
or oblique, usually convex; about three tabulae in the space of 1 mm. 
Lateral connecting tubes large, often occupying half the length of the wall 
between the tabulae. 
Observations. —The above coral in many respects resembles the well- 
known species C. junciformis , Hall. 1 It differs, however, in hav¬ 
ing more numerous and irregular tabulae in the vertical corallites; and 
in its strong tendency to form instead of one platform of prostrate tubules, 
successive series, forming in more or less regular layers, which apparently 
take the place of the horizontal expansions of the walls, described 
in the American species. This mode ot growth produces a thick and 
widely expanded corallum. 
It is of great interest to find this genus in the Yeringian limestones 
of Gippsland, since it was hitherto only known in the Clinton and Niagara 
Groups of the United States, and, in the latter series, in Canada. 
Locality and Horizon .—Tyers River, Gippsland. Silurian (Yeringian).. 
Genus Fistulipora, McCoy. 
Fistulipora sp. 
Plate II., fig. 3. 
An example of an encrusting, lamellate Fistulipora occurs in slide 
207 ; structure somewhat obscured by mineralization. In one part 
of the coral the section passes, transversely through the autopores, 
showing them to be characteristically sub-circular or pyriform. They mea¬ 
sure about 3 mm. in diameter, and are surrounded by the radially-grouped, 
interstitial tubes. On comparing this example with the type of the genus, 
F. minor , McCoy 2 , to which it bears a certain resemblance, it is seen that the 
autopores are only slightly smaller than those in the Carboniferous fossil. 
Ulrich describes and figures a species, F. communis , which agrees in 
general structural characters with our specimen, from the Hamilton Group 
(Devonian) of Illinois 3 . This species, which Ulrich subsequently termed 
Cyclotrypa communis, has circular autopores, and in this respect seems, to 
differ from ours. Further material, however, is required before a closer 
comparison can be made. The present example shows an extent of 23 mm. 
1 Hall, Palseont. N. York, vol. ii., 1852, p. 43, pi. xviii., figs. la-1/. 
See also Rominger, Geol. Surv. Mich., Foss. Corals, 1876, p. 85, pi. xxxiii., fig. 4 ; and 
Lambe, Contrib. Canad. Palaeont, vol. iv., pt. 1, 1899, Canad. Pal. Corals, p. 63. 
2 See Nicholson, “On the Structure and Affinities of the genus Monticulipora and its Sub-genera, 
92, fig. 16. 
1881, 
Geol. Surv. Illinois, vol. VIII., 1890, p. 476, pi XLVII., figs. 1, la ; pi. XLVIII. 
fig's- 
1 , la. 
