15 
an examination of some specimens collected by Dr. Morson and Mr. J. 
IVaterliouse, M.A., in tlie Maitland District. To these may be added the 
arrangement of the septa, and the fact that the perij)heral edge of the calice 
is horizontal. 
The corallum is, generally speaking, straight, and only curved, to any 
great extent, at its immediate base. The epitheca is thick and dense, and 
covers the costse in concentric laminar frills. The present examples exceed 
those described by De Koninck in size — one being two and a quarter inches 
in height, by one and a quarter in breadth across the calice, and another one 
and three-quarter inches in height, with a greatest diameter of one and a half 
inches. Our examples possess forty-five septa, De Koninck only quoted 
thirty-six, but I nevertheless feel satisfied that the forms are the same species, 
they otherwise so closely correspond. 
Locality^ and Horizon. — Branxton, on the Hunter E.iver, Co. Nor- 
thumherland ( — Morson, M.D.). Near Dee’s Hotel, M^est Maitland, Co. 
Northumberland {J. Waterhouse, 31. A.) Upper Marine Group. 
Zaphrentis peymatodes,- sp. nov. 
Plate IX, Pigs. 14-17. 
Sp. Char . — Corallum of medium size, turbinate-conical, very slightly 
curved, with inconspicuous growth accretions ; section circular ; Ijase slightly 
curved. Sej^ta forty-eight, irregularly grouped in bundles, which meet at, 
and become lost on, a small central tabulate area; stereoplasma largely 
developed, forming a solid peripheral zone, extending inwards for from one- 
third to half the diameter of the corallum, and afterwards enclosing each 
septum, leaving between them elongate and irregular interseptal loculi ; dis- 
sepiments not apparent ; f ossula lateraF ; alar septum short. Tabulate area 
small. Hugie hid by the epitheca, which is strong, thick, and corrugated, 
with very numerous tubular out-growths over the whole corallum, and 
roughly arranged in quincunx. 
Ohs. — Z. phymatodes is a peculiar species, both in its septal and 
epithecal characters. On the ventral, or side of the least curvature of the 
corallum, the sc2)ta are united in irregular bundles. The peripheral mass of 
' I)e Koninck mentions Burragood. 
^ ^uiJ.aTwir)9, abounding in tubercles. 
^ i.e., on the left-hand side of the observer. 
lU 50—91 D 
