STOMATOPORA. 



45 



Stomatopora haimei, Terquem and Piette, 1865, op. cit. p. 124, pi. xiv. figs. 



29, 30. 

 ,, montlivaltiformis, Vine, 1884, 4th Rep. Foss. Polyz. : Rep. Brit. 



Assoc. 1883, p. 186. 

 ,, terquemi, Haime, 1854, op. cit. p. 164, pi. vi. fig. 4. 



Pictet, 1857, op. cit. p. 143. 

 ,, Ferry, 1862, Bajoc. Ma9on: Mem. Soc. linn. Norm. i. xii. 



p. 35. 

 ,, ,, Waagen, 1868, Zone Amm. sowerbyi, Geogn. Pal. Beitr. 



Bd. i. p. 647. 



,, ,, Terquem, 1868, in Jacquot, op. cit. p. 290. 



,, ,, Terquem and Jourdy, t. Bath. Moselle: Mem. Soc. geol. 



France, ser. 2, t. ix. 1871, pp. 164, 168. 

 ,, . ,, Vine, 1883, 3rd Eep. op. cit. p. 264. 



,, Friren, 1893, Bry. ool. inf. Metz : Bull. Soc. ffist. nat. 



Metz, ser. 2, t. vi. p. 51. 



Diastopora ,, Terquem, 1855, Pal. dep. Moselle (sep. copy), p. 28. 



Stomatopora spirata, "Walford, 1889, op, cit. p. 564, pi. xviii. fig. 6. 

 ,, porrecta, Walford, 1889, op. cit. p. 565, pi. xviii. figs. 7, 8. 

 ,, waltoni, pars, Vine, 1884, Polyz. Richmond boring: Quart. Journ. 



Geol. Soc. vol. xl. p. 787. 



,, ex syn. Vine, 1887, Polyz. neigh. North. : Journ. North- 



ampton Nat. Hist. Soc. vol. iv. p. 204. pi. i. fig. 1. 

 ,, recurva, Waagen, 1868, Zone Amm. sowerbyi, Geogn. Pal. Beitr. 



Bd. i. p. 647, pi. xxxii. fig. 9. 

 ,, ,, Friren, 1893, Bry. ool. inf. Metz: Bull. Soc. Hist. nat. 



Metz, ser. 2, t. vi. p. 51. 



DIAGNOSIS : 



Zoarium typically forming a loose, irregular network; the 

 lines radiate from the centre and repeatedly branch dichoto- 

 mously. Eight or ten zooecia may occur between two points of 

 bifurcation. Such series are often curved (var. spirata, Waif.). 

 Young forms consist of a single line, which may at first branch 

 very sparingly (var. porrecta, Waif.). Crowded growths occur. 



Zocecia regularly cylindrical. 



Peristomes well raised, varying in height from half to one and a 

 half times the diameter of the zocecia. Surface punctulate and 

 transversely wrinkled. The wrinkling is best seen in young 

 zooecia. The normal zocecia vary in length from one and a half to 

 three times the diameter. 



Ocecia small ; appear as small hemispherical tubercles ; diameter 

 about half that of the zooecia ; punctulate. 



Formula. p, c, I, r = 2, 0, 1, 1. 



