BEPTOMULTISPARSA. 115 



2. Reptomultisparsa undulata (Michelin), 1846. 



SYNONYMY : 



Diastopora undulata, Michelin, 1846, Icon. Zooph. p. 212, pi. Ivi. fig. 15. 

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



,, ,, Bronn, 1849, Enum. p. 141. 



,, ,, D'Orbigny, 1849, Prod. Pal. t. i. p. 317. 



,, microstoma var. connectens, Vine, 1884, Polyz. Richmond boring: 



Quart. Journ. Geol. Soc. vol. xl. p. 789. 

 Berenicea undulata, D'Orbigny, 1852, Pal. fran9. Terr. cret. t. v. p. 860. 



,, microstoma, non Mich., Haime, 1854, Bry. jurass. : Mem. Soc. geol. 



France, ser. 2, t. v. p. 178, pi. vii. fig. 3. 

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



t. xii. pp. 35, 42. 



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



Metz, ser. 2, t. vi. p. 47. 



DIAGNOSIS : 



Zonrium in large, thick, irregular encrusting sheets, which in 

 the adult completely bury the shell they encrust. Young forms 

 are nabelliform. 



Zocecia long or medium in length. Young zocecia are seen 

 throughout. The more adult peripheral zocecia are crowded, and 

 thus not wholly seen. Surface traversed by sinuous raised ridges. 



Peristomes slightly raised. Irregularly distributed. 



Formula. p, c, I, r=\-\", 0, 2, *0. 



DISTRIBUTION. 



ENGLISH : 



Lower Oolite : Loc. ? Bradford Clay : Bradford. 



Great Oolite : Richmond boring. 

 FOREIGN : 



Bathonian : Ranville and Boulogne, France. 



Bajocian : Pouilly, near Ma9on, France (fide Ferry) ; Plappeville, 

 Montvaux, Germany (fide Friren). 



Description of Figures. PL VI. Fig. 2. Lower Oolite. Loc. ? 

 Part of a zoarium, x 10 dia. B. 4850. PL VI. Pig. 3. Bradford 

 Clay: Bradford. Some zocecia, X 18 dia. 35250. 



Affinities. The zooecia of this species are closely allied to those 

 of B. dilmiana, Lamx., and the two species have the same formula. 

 The most striking difference between the individual zocecia of the 

 two species is the prominence of the sinuous transverse ridges in 

 the form under consideration. This species has been regarded 



