20 NEW ZEALAND PALEONTOLOGY. 



bedsj Canterbury ; VI. Four specimens are noted ; but one 

 has been transferred, as it is a Flabellum corbicula, nobis. Fig. 

 20 — A, coral, natural size ; B, one system of septa enlarged. 



Sub-order — Hydro-corallin.e. 

 Hydroids forming a corallum with two kinds of zooids — viz., 

 Gastrozooids and Dactylozooids. Family — 3Iil/eporidce. Dac- 

 tylozoo'd'?, with numerous tentacles. Ampullae absent. 



Heteropora. De Blainville, 1833. 



Corallum irregular, arborescent or encrusting. Pores of two 

 kinds, devoid of styles, and scattered irregularly without tabulae. 



Heteropora ovalis, n. s. Corallum small, oval, free (?). 

 Surface covered with small gasteropores and minute dactyio- 

 pores, the latter more numerous, and both disposed irregularly. 

 Tubes long, gradually contracting, and curved inv.ards. 



There is only a small fragment of this coral, not more than 

 25 millim. in length. No one would question its being very 

 like Millepora, a genus which is essentially tropical. It has no 

 tabulae; and this, with the curved tubes, connects it with the 

 other fossil genera to be described, as well as with a living species 

 which I have already named M. undulosa. It is a transitional 

 group between the StylasteridcB and Milleporidce, and this species 

 forms a connecting link. App. Off. Cat., p. -40, No. 78. 

 Te Aute limestone, Mount Vernon, Waipukurau, Napier ; III."^ 



Heteropora calycifera, n. s. Corallum massive, calca- 

 reous, with short branches, terminating in cup-shaped depres- 

 sions, forming a cup with thickened margins, full of radiat- 

 ing curved tubes. Gasteropores with an irregular quincuncial 

 arrangement, a circular aperture, and a raised margin. About 

 two small dactjdopores to one gasteropore, the latter prolonged 

 inwards and do^vnwards. The peculiarity of this fossil is the 

 curious cujD-like branches, which have the appearance of calices. 

 The aspect is like Amphihelia, and one would almost expect to 



* This form seems to come very neai' to Busk's Seteropora neozelandica (see Jour. 

 Linn. See., vol. 14, p. 724), if not identical with it. Professor A. Nicholson figures, 

 ia liis recent work on "Tabulate Corals" (p. 257), a fragment of an undescribed 

 living species of Heteropora from New Zealand which must be closely allied to the 

 present fossil. But as Heteropora is classed amongst the Bryozoa, I prefer to name 

 and place the species as above, especirJly as there are no signs of the " hymen-like 

 lids " in the interstitial tubes, forming pseudo-tabulse. 



