PROSOBRANCHIATA. TUKRITELLID^. 209 



Mesalia trochoides, Deshayes, 1801. 



Tnrritella trochoides. 



Desc. Auini. sans Vert. 1861, vol. ii. pi. xv. figs. 26-28, p. 328. 

 Mesalia trochoides. 



Ann. Soc. R. Mai. Belgique, 1888, vol. xxiii. p. 304. 

 Horizon and Locality. 



Middle Eocene. — Bracklesham Beds. Stubbington. 



Genus CINGULINA, A. Adams, 1860. 

 Annals, 1860, vol. 6. p. 414. 



Mathilda, O. Semper, 1865. 

 .lourn. Conchyl. 1865, vol. xiii. p. 328. 



Cingulina Bourdoti (var.), E. de Boury, 1883. 



.Mathilda Bourdoti. 

 Joiirn. Conchyl. 1883, vol. xxxi. pi. v. figs. 2, 2", p. 128. 

 Ann. Soc. R. Mai. Belgique, 1888, vol. xxiii. pi. xii. tigs. 4-6, p. 305. 



Horizons and Localities. 



Upper Eocene. — Barton Beds. High ClifF. 



Lower Eocene. — London Clay. Clarendon ; Highgate Wood Tuiinel, 

 Finch ley. 



Cingulina chiasta, Edwards (MS.). 



Horizon and Localities. 



Lower Eocene. — London Clay. Southampton ; Portsmouth ; Highgate 

 Wood Tunnel. 



Cingtilina ditropis, Edwards (MS.). 



Horizon and Locality. 



Lower Eocene. — iMtidon Clay. Highgate Wood, Finchley. 



Cingulina tritropis, Edwards (MS.). 



Horizon and Locality. 

 Lower Eocene. — London Clay. Highgate Wood Tunnel. 



Cingulina virginella, Edwards (MS.). 



Horizon and Locality. 



Upper Eocene. — Barton Beds. High Clift'. 



Genus GEGANIA, J. G. Jeffreys, 1884. 

 Proc. Zool. Soc. 1884, pi. xxvii. fig. 10, p. 365. 



Gegania concinna, Edwards (MS.). 



Horizmi and Locality. 



Lower Eocene. — London Clay. Highgate Wood Tunnel, Finchley, 



p 



