57 
guenza,* and subsequently by Reuss. Its septa are less 
regularly disposed and the papilli of the columella are much 
less numerous. For C. typus, Seguenza gives 30 to 40 and 
Reuss 28 to 36 as the number of the papilli, whereas the 
Australian form contains from 6 to 12 only. Another dis- 
tinetion is that the latter has sometimes a considerable 
amount of endotheca in the calice, while no mention is made 
by either Seguenza or Reuss of endothcea in the European 
examples. Amongst my specimens there are three which 
show a notable amount of endotheca. Im Duncan's figure 
the artist has clearly indicated some endotheca, and in the 
accompanying plates I give a drawing of a calice from 
Fyan’s Ford with more still. For these reasons I propose to 
make Duncan's varietal name of the Australian form a 
Specific one. 
Locality, etc.—Eocene. West of Gellibrand River, (Dun- 
can’s type locality), Cape Otway, Shelford, and Fyan's Ford, 
Moorabool River. The figured example is from Fyan's Ford, 
and its pedicel has been broken off. 
GENUS DISCOTROCHUS, 
Discotrochus ? pateriformis, spec. nov. РІ. xxii., figs. Та, b. 
The corallum is free, discoid, and very small. In shape it 
resembles a miniature dish, with an outwardly sloping peri- 
meter. The base is flat, elliptical, smaller than the calice, 
and without trace of adherence. The coste are broad, sub- 
equal, almost plain, roundly projecting, and continuous 
with the septa. Most of them reach the base, and are 
Separated by interspaces equalling them in breadth, and 
having a very fine longitudinal ridge in the centre of each. 
The wall is stout and well marked at the calicular margin. 
Both the base and sides of the corallum have a white, glisten- 
ing appearance. i 
The calice is subplane and elliptical, its major and minor 
axes being in the ratio of 4 to 3. The septa are exsert, 
Stout, nearly equal in size, and closely beset on their sides 
with large, pointed granules. They are in six unequal 
Systems with four cycles, of which the last is developed only 
in two and a half systems. The quaternaries, when present, 
are very short, and fuse with the tertiaries quite close to the 
wall. Occasionally also the tertiaries join the enclosed second- 
ary at their inner ends. The columella is prominent, fasci- 
cular, and occupies considerable space in the calice. 
* Disqu. Pal. intorno ai Corall. Foss., Torino. Part II., pp. 
88-5, pl. x., fig. 1. 
t Foss. Korall. Osterreichisch-Ungarischen Miocüns, Wien., 
p. 30, pl. iii., figs. 10-12. 
