llO OSi'KACOHA. 



Cytherella Mueusteri, Roemer, 1838. Tertiary, England, Europe, 



N. America ; Cretaceous, England, Eurojje : Iteeent, Australia, Norway. 



Cytherina Mtmisteri, Roemer, 1838, Neues Jahrb. f. Min. &c. p. 516, t. vi. 



fig. 13. 

 Cythere truneata, Bosquet, Mem. Soc. Eoy. Liege, iv. p. 357, t. i. fig. 2. 

 C. ( Cytherella) truneata, Joues, Cret. Eutoms. p. 30, t. vii. fig. 35. 

 Cytherella Mimstei-i, Bosquet, 1852, Mem. Couron. Acad. Belg. xxiv. p. 13, t. i. 

 fig. 2 ; Jones, Tert. Entom., Mon. Pal. Soc, p. 56, pi. v. figs. 12 «, 12 J, 13 ; 

 id. 1870, Geol. Mag. vol. vii. p. 159. 



Cytherella Muensteri, var. rectipunctata, Jones, 1870, Geol. Mag. vol. vii. 

 p. 157. 



Cjrtherella ovata, lloemer, sp., 1840. Cliallc, S.E. of England; Eed 



Chalk, Flamborough ; Chalk-marl, Charing, Dover ; 

 Gault, Folkestone, iS:c. ; Greensand, Warminster ; 

 Lower Greensand and Chalk, France ; Chalk, Mae- 

 stricht, Bohemia, Saxony, N. Germanj', &c. 

 Cytherina, Lyell and Lonsdale, 1838, Elem. Geol. p. 5.5, fig. 19. 

 Cytherina ovata, Roemer, 1840, Verst. Kreid. p. 104. no. 4, pi. xvi. fig. 21 ; 



Reuss, 1845, Verstein. bohm. Kreid. p. 16. no. 6, pi. v. fig. 35. 

 Cytherella ovata, Jones, 1849, Oretac. Entomos., Mon. Pal. Soc. p. 28, t. vii. 

 figs. 24 a-i; Bosquet, 1854, Mem. C. C. Geol. Neerl. ii. p. 55, pi. viii. 

 figs. 1 a-f. 



Cytherella simplex, Jones and Kirkby, 1867. Carb. series, Raes Gill. 

 Cytherella simplex, J. & K. 1867, Trans. Geol. Soc. Glasgow, vol. ii. p. 218 ; 

 id. Cat. Western Scot. Foss. p. 44. 



Cytherella Williamsoniana, Jones, 1849. Chalk, S.E. England ; Chalk- 

 marl, Charing, Dover ; Gault, Folkestone, &c. 

 Cytherella Willia7nsoniana, Jones, 1849, Cret. Entom., Mon. Pal. Soc. p. 31, 

 t. vii. figs. 26 a-i. 

 Cytherella Williamsoniana, var. granulosa, Jones, 1849, ib. fig. 26 i. 



Chalk, Norwich. 



CYTHERELLINA, Jones and HoU, 1869. 



Beyrichia, Jones, 1855, Ann. & Mag. Nat. Hist. 2nd ser. vol. xvi. p. 90. 

 Cytherellina, Jones and Holl, 1869, Ann. & Mag. Nat. Hist. 4th ser. vol. iii. 

 p. 215. 

 Distribution. Silurian. 



Cytherellina siliqua, Jones, 1869. Upper Ludlow Beds, Hales End, 



near Malvern. 

 Beyrichia siliqua, Jones, 1855, Ann. & Mag. Nat. Hist. 2nd ser. vol. xvi. p. 90, 



pi. V. fig. 22. 

 Cytherellina siliqua, Jones, 1869, Ann. & Mag. Nat. Hist. 4th ser. vol. iii. 

 p. 210, pi. xiv. figs. 1-0. 



Cytherellina siliqua, var. tersa, Jones, 1869. Wenlock Limest., Malvern. 

 Cytherellina siliqua, var. tersa, Jones, 1869, Ann. & Mag. Nat. Hist. 4th ser. 

 vol. iii. p. 217, pi. xiv. fig. 3. 



Cytherellina siliqua, var. ovata, Jones, 1869. AVenlock Shale, Malvern. 

 Cytherellina siliqua, var. ovala, J(ines, 1869, Ann. it Mag. Nat. Hist. 4th ser. 

 vol. iii. pi. xiv. lig. 1. 



