JBKrOZOA FROM NEW ZEALAND. 



343 



to be less crowded than is usually the case. The zooecial tubes are 

 very narrow, only about 0-06 millim., with the slightly elliptical 

 aperture about 0*04 millim., and these very small zooecia are only 

 about half the size of those of typical D. sarniensis from Guernsey. 

 The fossil is without an ovicell, but the recent specimen has them 

 transversely elongate. The zoarial appearance is somewhat the same 

 as in D. obelia ; and in the fossil there are closed cells, with a tubule 

 projecting from the centre of the cover. 



Log. Living : New Zealand. Fossil : "Waipakurau. 



13. Tubtjlipoea dlmibiata (E-ss.). 



Defrancia dimidiata, Eeuss, Poss. Polyp, d. Wien. Tert. p. 39, 

 pi. vi. fig. 6. 



Pavotubigera dimidiata, Waters, Quart. Journ. Geol. Soc. vol. xl. 

 p. 691. 



Log. Fossil : Miocene of Austria and Hungary ; Mount Gambier ; 

 Trig Station. 



14. Tubulipoea Campicheana (d'Orb.). (PI. XVIII. fig. 15.) 



Multifascigera Campicheana, d'Orb. Pal. Franc, p. 688, pi. 762. 

 figs. 7-9. 



This, like T. bidujplicata, occurs in strap-shaped expansions, 

 sometimes quite separate, sometimes confluent ; and then often the 

 lines of growth can scarcely be followed. Here, instead of the 

 zooecia occurring in uniserial rows, they are in fasciculi alternate 

 on each side of a mesial line ; on each side of the principal row 

 and in the line of the fasciculi are one or two zooecia as outliers. 



The growth is so similar in this and the next species that at one 

 time I was not sure if they should be specifically separated ; but 

 this form is much stouter, having the series 1 millim. apart, whereas 

 in T. biduplicata they are only 0*5 millim. apart. In those parts 

 of the colony where the growth is the least regular, the appearance 

 is just the same as in the St.-Croix specimens, and I think it must be 

 considered identical with the Jurassic species. A specimen in the 

 Lausanne Museum, from St. Croix, has very distinct hexagonal 

 divisions between the zooecia, and in the New-Zealand fossil similar 

 divisions are found in some parts. 



The ocecia are large, occurring in various parts of the zoarium, 

 but usually near the end, including the series on each side of the 

 mesial line, and usually in about three double series. 



Log. Fossil : Valangian of St. Croix ; Petane ; Waipukurau ; 

 Napier. 



15. Tubtjlipoea biduplicata, sp. nov. (PI. XVIII. figs. 12 & 14.) 



Zoarium adnate, branches broadly ligulate or united at the base, 

 forming a continuous crust. Zooecia arranged on each side of a 

 mesial line in parallel transverse rows opposite or alternate, usually 

 two or three zooecia in a row, but occasionally, as at the dichoto- 

 mization, . in isolated fasciculi ; on each side of these principal 

 ows, and in the line of the series, are one or two zooecia as outliers. 



