of (lie British Jurassic Bryozoa. 153 



2. Diastopora Davidson!, Haime, 1854. 



Diastopora Davidsoni, Haime, 1854, Bry. Jur., Mtim. Soc. g6ol. France, 



se>. 2, t. v. p. 185, pi. viii. tig. 9. 

 Diastopora Wriyhti, Haime, 1854, op. cit. p. 186, pi. viii. fig. 5. 

 Diastopora foliacea (non Lamx.), Morris, 1843, Cat. Brit. Foss. p. 35 



(fide Haime). 

 Diastopora Terquemi, Haime, 1854, op. cit. p. 187, pi. viii. figs. 7 a-d. 

 Diastopora scobinula (non Mich.), Haime, op. cit. p. 186, pi. viii. fig. 6. 

 Mesenteripora scobinula (non Mich.), Sauvage, 1889, Bry. Jur. Boul., 



Bull. Soc. g«5ol. France, s6r. 3, t. xvii. p. 49. 



Diagnosis. — Zoarium loose, composed of broad and fairly 

 flat fronds ; bilaminate. 



Zooecia visible throughout their length or almost so ; their 

 length is medium, and in shape they are regularly cylin- 

 drical. 



Peristomes slightly raised, but not reflexed ; they are 

 mostly arranged in fairly regular oblique lines. 



Formula. — 1 2 r 0. 



Distribution. — England : Inferior Oolite and Great Oolite. 

 Foreign : Bajocian, France and Germany ; Bathonian , 

 France. 



3. Diastopora Michelini (Blainville), 1830. 



Mesenteripora Michelini, Blainville, 1830, Diet. Sci. nat. t. Ix. p. 397. 

 Diastopora Micheli?ii, M.-Edwards, 1838, Mem. Cris., Ann. Sci. nat. 



Zool. s6r. 2, t. ix. p. 226, pi. xiii. fig. 1. 

 Bidiastopora Michelini, d'Orbigny, 1849, Prod. Pal. t. i. p. 317. 

 Mesenteripora dcedalea, Blainville, 1830, Diet. Sci. Nat. t. Ix. p. 397. 

 Diastopora foliacea (non Lamx.), Michelin, 1846, op. cit. p. 239, pi. lvi. 



fig. 8. 

 Bidiastopora microphylla, d'Orbigny, 1849, Prod. Pal. t. i. p. 317. 

 Mesenteripora microphylla, d'Orbigny, 1852, Pal. franc., Terr. cret. t. v. 



p. 808. 

 Diastopora microphylla? , Haime, 1854, Bry. Jur., Mem. Soc. geol. France, 



s6r. 2, t. v. p. 191. 

 Bidiastopora latifolia, d'Orbigny, 1852, Pal, franc., Terr. cr<5t. t. v. 



p. 799. 

 Diastopora latifolia, Haime, 18-54, op. cit. p. 191. 

 ? Diastopora conferta, Reuss, 1867, Bry. braun. Jura Balin, Denks, k. 



Akad. Wiss. Wien, Bd. exxvii. p. 10, pi. ii. fig. 6. 



Diagnosis. — Zoarium hemispherical, formed of interlocking 

 contorted bilaminate fronds. The surface appears cerebri- 

 form, as the sinuous edges of the fronds are separated by 

 narrow depressions. 



Zooecia short and very crowded, only visible at the distal 

 end. 



