208 
pp:ripora. 
OirAR. — Branches laterally compressed. Apertures in spiral series ; about 
twenty in a complete circuit of the stem ; series close. 
Distrik. — S enonian — Campanian : Riigen. 
11. truncata (Woodward), 1833. 
8yx. Millepora tnincata, S. Woodward, 1833. Geol. Xorf. p. 46, pi. iv. 
fi^s. 14a-c. 
C itAR. — Indeterminable. 
Distrir. — U pper Chalk : Xorwich. 
12. ? vertebralis (Stoliczka), 1864. 
Syx. Spiroporina vertebralis, Stoliczka, 1864. Bry. Orakei : Xov. E\i)ed. 
Geol. Th. vol. i. pt. 2, p. 106, pi. xni. figs. 6, 7. 
Spiropora ,, Bergens & Meunier, 1867. Bry. gar. Faxe : 
Ann. Soc. roy. mal. Belg. vol. xxi. p. 210, 
pi. xi. fig. 2. 
Sparsiporina ,, Stoliczka, 1864. Op. cit. p. 91. 
Char. — Zooecia broad, with contracted prominent aperture. Apeitures laterally 
well separated. Verticels well spaced. 
Distrib. — D auian : Stern’s Klint, Denmark; Auuetorp, Sweden. 
Ai'f. — T his species is recorded among the Spiropora, in deference to the 
opinion of Pergens & ^leunier, who, after having examined Stoliczka’s type, 
accepted it as Spiropora. According to ^lacgillivray,* however, the species 
is a verticillate variety of Forina gracilis. 
PERIPORA, d’Orbignv, 1850. 
[Prod. Pal. vol. ii. p. 266.] 
8rNO^’YMS. 
Zonopora, pars, d’Orhigny (1850, etc.). 
Fustidopora, pars, Michelin (1845). 
Diagnosis. 
Entalophoridae with tufted zoarium of cylindrical branches rising 
from a discoid base. 
Zooecia opening in spirals or whorls, with two or more series of 
apertures in each xvhorl. 
Type Species. 
Feripora ligeriensis, d’Orbigny, 1850. Prod. Pal. vol. ii. p. 266. 
Based on figures in Bry. Cret. pi. 616, figs. 9-11, xvhich is distinct 
1 P. H. Macgilli’^Tay. Mon. Tert. Polyz. Viet. : Trans. Boy. Soc. Tict. vol. iv. 
1895, p. 103. 
