688 A. W. WATERS ON FOSSIL CYCLOSTOMATOUS 
fig. 6; Cat. Mar. Polyz. pt. i. p. 17, pl. xx. figs. 1, 2, 3,6; Waters, 
Bry. of Naples, p. 275. 
Hornera porosa, Stoliczka, Olig. Bry. von Latdorf, p. 79, pl. i. 
f. 3. 
From the River-Murray Cliffs there is a well-preserved specimen 
which exactly corresponds with some recent ones I have from 
Naples, and this served as a key to the Curdies-Creek collection, from 
which there are a number of fragments, which, viewed separately, 
might have been considered as representing several species. Towards 
the growing end the ridges forming the lozenge spaces are smooth, 
whereas towards the base they are transversely nodulated. On the 
dorsal surface this nodulation occurs equally in the younger and 
older portions. In some cases the mouths of the tubes are much 
exserted, and often cut away towards the dorsal end, thus giving a 
bifid appearance; in other parts they are entire, and sometimes 
scarcely at all raised. The closure, with one pore, is near the ter- 
mination of the zocecial tube. This is closely allied to, if not 
identical with, Hornera verrucosa, Rss. (Septarienth. p. 81), and it 
is also allied to H. striata and H. lichenoides. 
Loc. Oligocene: Latdorf. Pliocene: of Italy and Sicily, English 
Crag; Curdies Creek, River Murray Cliffs, Bairnsdale, Mt. Gam- 
bier. Living: Mediterranean. 
12. Hornera Fortacea, MacG. Pl. XXXII, fig. 18. 
Hornera foliacea, MacG., Australian Polyzoa, R. Soc. Vict. 1868, 
joe Le 
Retihornera foliacea, Busk, Cat. Mar. Polyz. pt. i. p. 19, pl. xi. 
figs le w2. sole axe 
Zoarium in Retchornera-form. In the fossils the aperture seems 
to be about 0:04 to 0:05 millim. broad; the fenestrze are sometimes 
as much as 1:8 millim. long and 0-4 millim. broad. According to 
Mr. Busk’s figures the fenestree were rather shorter in the specimens 
he represents. 
The transverse tubules do not seem to have any oral apertures, 
though as they often arise from the immediate vicinity of the aper- 
tures in the main branch, it frequently appears as if they belonged 
to the transverse bar ; but this is not the case. 
Loc. living: Portland Bay; Wilson’s Promontory ; Tasmania 
(MacG.). Fossil: Bairnsdale, Mt. Gambier, River Murray Cliffs. 
13. SromaToPpoRA GRANULATA, M.-Edw., var. MINOR. 
There is a small specimen of uniserial Stomatopora from Bairns- 
dale, with aperture about 0:06-0:07 millim., but from one such 
specimen it is impossible to speak confidently about the identifi- 
cation. A specimen in my collection, from the Valangien of St. 
Croix, which I believe to be S. granulata, has the aperture about 
0-12 millim. 
There is a second specimen of this from Waurn Ponds, which 
seems sometimes to become biserial. . 
