CORALS AND BRYOZOA. 21 



find septa in the terminal cnps. App. Off. Cat., p. 41, No. 80. 

 Te Ante limestone, Monnt Vernon, AYaipuknrau, Napier; III. 

 Fig. .22 — A, coral, natnral size. 



New genus — Cylixdropora. 



Hydroid corals, in which the pores are all equal, and dis- 

 posed on radiating descending tubes round the solid axis of a 

 branched corallum. 



These very interesting corals might easily be mistaken for 

 Bryozoa. They belong to a type of which there is a li\'ing 

 example in the New Zealand seas, which I described in the 

 eleventh volume of the Transactions of the New Zealand 

 Institute, p. 345, under the name of Millepora widuJosa. I 

 believe it has representatives in the Tertiary formations of 

 Australia, but in any case it is a form very characteristic of tlie 

 New Zealand fossil fauna. 



Cylindropora areolata, n. s. Corallum solid, much 

 branched, branches more or less cylindrical. Cells or gastero- 

 pores deeply immersed, sloping from an acute raised hexagonal 

 margin to a deep, pyriform, nearly central pore, from which the 

 cell curves deeply inwards and do^vnwards to the centre of the 

 axis, making the central tissue sjjongy in appearance, but hard 

 and compact. 



I should be inclined to refer this fossil to Mantell's Cei'iopora 

 ototara (See Jour. Geol. Soc, Vol. 6, 1850, p. 329), but the 

 figure is smaller, and the section is that of Eschar a. From the 

 fact that Mantell refers the genus to Ceriopora, which Goldfuss 

 defines as not having the pores prolonged into tubes, we may 

 infer that the species are not the same. App. Off. Cat., p. 40. 

 No. 79 : Te Ante limestone. Mount Vernon, Waipukurau, 

 Napier ; III. Also No. 73 : Dorset's, Forty-Mile Bush, 

 AVellington; III. Fig. 21 — A, branch, slightly enlarged ; B, 

 cells, much enlarged; C, transverse section of branch, much 

 enlarged ; D, longitudinal section, ditto. 



Cylindropora spongiosa, n. s. This is a mass of Iwdroid 

 coral, about two inches in diameter. The upper crust is com- 

 posed of cerebriform ridges, very like Fascicidipora; but, instead 

 of the mass being made up of fasciculi, with smooth external 

 sheaths, the sides, as well as the crests, are a mass of round 

 pores. In section the tubes are small, long, curved, and tapering 

 to a point. It is evident that this coral belongs to the hydroids 



