128 
BULLETIN OF THE LABORATORIES 
are all distinctly grooved along their summit. The feature upon 
which we place the most stress however is the line of pointed elevations 
along the median line of the animal, beginning with a very conspicuous 
termination of the occipital ring and ending with a few low granules 
on the pygidium. These give the axial lobe when viewed from the 
side quite a serrated appearance. If these be not of specific value, 
the species fails and becomes mere variety. 
CyATHOPHYLLUM AUSTRAI.E, Sp. 11. 
[Plate XIII, Figs. 12, 13, 14.) 
Externally the polyp is marked by quite distinct costae. The 
polyp is conical, slightly curved, the side towards the apertural gap 
being the more convex one. Fine striae or lines of growth, with 
wrinklts of no prominence, pass around the polyp. Lamellae in 
the calyx, 40, low and rounded, nearly rounded above, half of them 
disappearing soon after reaching the bottom of the calyx. Between 
the lammellae in the groove is a series of minute points, about ii of 
which occurs in a length of two mm. Length of polyp, 16 mm • 
breadth, 10 mm, depth of calyx at least 5 mm,, it may have been a 
little greater. Found in the hardened grey-brown shales east of 
Bowning Hill, Bowning Parish, New South- Wales, Australia. 
Presented by Mr John Mitchell. 
In Pal. Foss, of Cornw. Dev. and W. Som. Mr. John Philips 
figures under the name of Turbinolopsis bina, Lonsdale a species present- 
ing many of the characteristics of the Australian species. A row of 
small pits is found in the bottom of the grooves, but they are less 
numerous. The line of elevation between the pits is also noted in the 
Australian form, but the denticulations of the lammellae noted in the 
English spec'es are absent or at least not noticeable in our specimens. 
A form similar to the last is described by Mr. Rudolph Ludwig in 
Coroll, aus Pal. Form, under the name Zaphrentis caudata. The num- 
ber of pits in the groove between the lamellae is larger than in the 
English species; the denticulations of the lamella are smaller in num- 
ber than the pits between them agreeing in this with the English 
species. The calyx is deep, at the centre it seems from the casts to 
be still further depressed, and on the side there seems to have been a 
distinct septal fovea. These species all agree in having a deep calyx. 
