262 
SriEOPOEA. 
Spiropora cenomana, Marsson, 1887. Ilry. Rug. : Pal. Al»h. vol. iv. p. 23, 
pi. i. fig. 10. 
,, ,, Vine, 1893. Compl. Rep. : Rep. Brit. Assoc. 1892, 
p. 310. 
Later otuhig era ,, d’Orbigny, 1853. Bry. Cret. p. 715, pi. 754, fig. 1. 
,, ,, Simonowitsch, 1871. Bry. Essen. Griins. : Verh. nat. 
Ver. preuss. Rheinl. vol. xxviii. p. 65. 
Pmtulopora pustiilosa [non Gold!'.), iSIiclielin, 1845. Icon. Zooph. p. 211, pi. liii. 
fig. 4. 
Entalophora transversa, d’Orbigny, 1851. Bry. Cret. pi. 622, figs. 8-10. 
Laterotubifjera ,, d’Orhigny, 1853. Ibid. p. 717. 
Spiropora ,, Bucaille, 1890. Bry. Cret. Seine-Inf. : Bidl. Soc. Sci. 
nat. Rouen, vol. xxv. p. 511. 
Laterotubigera Jlcxuosa, d’Orbigny, 1853. Bry. Cre't. p. 716, pi. 754, 
figs. 2-4. 
,, anmclato-spiralis, d’Orbigny, 1853. Bry. Cret. p. 718, pi. 754, 
figs. 8-11. 
Spiropora ,, Staring, 1860. Bod. Xederl. vol. ii. p. 398. 
,, ,, Ilamm, 1881. Bry. mastr. Ob.-Sen. p. 29. 
Semilaterotubigera annulafa, d’Orbigny, 1853. Bry. Cret. p. 750, pi. 762, 
figs. 13-15. 
Laterotubigera micropora, d’Orbigny, 1853. Bry. Cret. p. 719, pi. 754, 
figs. 12-14. 
Spiropora macropora, var. micropora^ Pergens, 1890. Revision, p. 365. 
,, ,, ,, Pergens, 1893. Bry. St. Pat. ; Bull. Soc. 
beige Ge'ol. vol. vi., Pr. Vb. p. 205. 
,, micropora, Vine, 1893. Compl. Rep. : Rep. Brit. Assoc. 1892, 
p. 310. 
Entalophora jessoni, Vine, 1885. Xotes Cambr. Gr. : Proc. Yorks. Geol. Soc. 
vol. ix. p. 15, pi. i. fig. 6. 
,, ,, Vine, 1889. Polyz. Low. Gr. : ibid. vol. xi. p. 261. 
,, raripora, pars, Vine, 1885. Op. cit. p. 14. 
? ,, neocomiensis. Vine, 1885. Op. cit. p. 16, pi. i. fig. 4. 
,, ,, Vine, 1889. Op. cit. p. 262. 
Entalophora pulchella, pars, Pergens, 1890. Revision, p. 358. 
,, ,, Pergens, 1895. Bry. Cachemb. : Bull. Soc. beige Geol. 
vol. viii., Pr. Vb. p. 135. 
Diagnosis. 
Zoarium of cylindrical branches, formed of numerous closely packed 
zooecia. The branches divide irregularly or dichotomously. 
Apertures regularly arranged in x’erticels or spirals. The series 
are crowded ; they are always much closer than the diameter 
of the branches. 
Peristomes fairly well raised. 
