126 . DIASTOPOEA. 



D. michelini differs from D. foliacea, Lamx., and D. daiidsoni, 

 Haime, by the above-mentioned characters. Its crowded zooecia 

 and raised peristomes distinguish it from D. lamellosa, Mich., 

 which is allied to it, by the shape of the zooecia. 



D. neocomiensis (D'Orb.) l is a Cretaceous species, which agrees 

 with this in the crumpled fronds and obliquely placed zorecia ; but 

 these are less crowded than in the Jurassic species. 



LIST OF SPECIMENS. 



24770. Forest Marble. Wiltshire. Cunnington Coll. Figd. PL VII. Fig. 2. 



60218. Bathonian. Ranville. Tesson Coll. 



60373. 



46785. 



60244. 



D. 1832. Bathonian. Normandy. 



B. 177, B, 209, B. 180. Bathonian. Ranville. Presented by Benj. Bright, Esq. 



4. Diastopora lamellosa, Michelin, 1846. 



SYNONYMY : 



Diastopora lamellosa, Michelin, 1846, Icon. Zooph. p. 241, pi. Ivi. fig. 11. 

 ,, ,, Bronn, 1848, Nomencl. p. 420. 



,, ,, Bronn, 1849, En-urn, p. 141. 



,, ,, Haime, 1854, Bry. jurass. : Mem. Soc. geol. France, ser. 2, 



t. v. p. 188, pi. ix. figs. \a-d. 

 ,, ,, Deslongchamps, 1865, Jur. inf. Norm. : Mem. Soc. linn. 



Norm. t. xiv. p. 151. 

 ,, ,, Vine, 1883, 3rd Eep. Foss. Polyz. : Rep. Brit. Assoc. 1882, 



p. 264. 

 ,, ,, Vine, 1884,4th Eep. Foss. Polyz. : Rep. Brit. Assoc. 1883, 



p. 188. 

 ,, Vine, 1888, Polyz. Caen: Joitrn. Northptn. Nat. Hist. 



Soc. vol. v. p. 17. 

 ,, ,, Gregory, 1896, Rev. pt. iv. : Ann. Mag. Nat. Hist. 



ser. 6, vol. xvii. p. 154. 

 Mcsenteripora ,, Sauvage, 1889, Bry. jur. Boul. : Bull. Soc. geol. France, 



ser. 3, t. xvii. p. 50. 

 non Bidiastopora lamellosa, D'Orbigny, 1850, Prod. Pal. t. ii. p. 266. 



1 Mesenteripora neocomiensis, D'Orbigny, Pal. fran9- Terr. cret. t. v. p. 808, 

 pi. Dcclvi. figs. 7-9. 



