1 IG OSTRACODA. 



Cytheropteron rectum, Brady, 1868. Post-Tertiary, Scotland ; 



Kecent, Shetland, W. of Ireland. 



Cytheropiermi rectum, Brady, 1868, Trans. Linn. See. vol. xxvi. p. 476; Brady & 

 Robts. 1869, Ann. & Map:. Nat. Hist. ser. 4, vol. iii. p. 372, pi. xx. figs. 6-8 ; 

 B., C. & R. 1874, Mon. Pal. Soc. p. 206, pi. xiv. figs. 17, 18. 



Cytheropteron triangulare, Reuss, sp. L. Eocene, London ; 



Cretaceous, Germany. 



Cythere triangularis, Reuss, Zeitseli. deutsch. geol. Gesell. vii. p. 279, t. x. 

 fig. 3 ; Jones, 1856, Tert. Entoni., Mon. Pal. Soc. p. 25, pi. vii. figs. 5 a-g. 

 Cytheropteron triangulare, Sars, 1865, Overs. Norg. mar. Ostrac. 



Cytheropteron umbonatitm, Williamson, sp. 1847. U. Chalk, Norwich ; 

 Chalk, Woolwich ; Chalk-marl, Dover and Charing. 



Cytherine umbonatum, Williamson, 1847, Trans. Manchester Phil. Soc. vol. 



viii. p. 82, pi. iv. fig. 78. 

 Cythere umbonata, Jones, 1849, Cret. Entomostr., Mon. Pal. Soc. t. ii. fig. 3 a-g. 

 Cytheropteron umbonatum, Sars, 1865, Overs. Norg. mar. Ostrac. 



CYTHERURA, G. 0. Sars, 1865. 



Cythere, Miiller, 1785, Entomostraca, p. 24 ; Baird, 1838, Mag. Zool. & Bot. 



vol. ii. p. 143 ; Jones, 1849, Cret. Entoni. p. 32 ; Zenker, 1854, Anat. 



Studien iiber die Krebsth. p. 84. 

 Cythernra, 6. O. Sars, 1865, Overs. Norg. mar. Ostrac. p. 71 ; Brady, 1868, 



Trans. Linn. Soc. vol. xxvi. p. 444 ; Bradv, Crossk. & Robts. 1874, Mon. 



Pal. Soc. p. 191. 

 Distribution. Gault to Post-Tertiary. Recent, marine. 



Cytherura acuticostata, G. 0. Sars, 1865. Post-Tertiary, Ireland, 



Scotland, and Norway ; Eecent, Great Britain, Ireland, 

 Holland, Norway. 



Cytherura acuticostata, G. 0. Sars, 1865, Overs. Norg. mar, Ostrac. p. 76 ; Brady, 

 1868, Trans. Linn. Soc. vol. xxvi. p. 445, pi. xxxii. figs. 1-11 ; Brady, Crossk. 

 & Robts. 1874, Mon. Pal. Soc. p. 199, pi. xvi. figs. 1-3. 



Cytherura angulata, Brady, 1868. Post-Tertiary, Ireland, Scotland, 



Wales, and Norway ; Eecent, Great Britain. 



Cytherura angulata, Brady, 1868, Trans. Linn. Soc. vol. xxvi. p. 442, pi. xxxii. 

 figs. 39-42 ; Brady, Crossk. & Robts. 1874, Mon. Pal. Soc. p. 197, pi. xi. 

 figs. 48-51, pi. xii. fig. 14. 



Cytherura appendiculata, Jones, 1849. Gault, Folkestone, 



Cytherelta ajjpendiculata, Jones, 1849, Cret. Entom.,Mon. Pal. Soc. p. 32, t. vi. 

 figs. 21 a, b. 



Cytherura attenuata, Jones, sp., 1856. M. Eocene, Isle of Wight. 



Cythere attenuata, Jones, 1856, Mon. Pal. Soc. p. 28, pi. v. fig. 11. 



