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. 



CVATHOPHVLLUM AUSTRALE, Sp. 11. 



{PlatelLWl, Figs. 12, 13, 14.) 



Externally the polyp is marked by quite distinct costae. The 

 polyp is conical, slightly curved, the side towards the apertiiral gap 

 being the more convex one. Fine striae or lines of growth, with 

 wrinkks of no prominence, pass around the polyp. LamelL^ 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 ir 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 

 litde 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 nam^-; oS. 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 Zaphnntis caudata. The num- 

 ber of pits in the groove between the lamellae is larger than in the 

 English species; the denticulations of the lamellae 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, 



