PROSOBRANCHIAIA. SCAHD>«, 211 



Cerithiscala, ) 



Gp-oscala,' ^ E. de Boury, 188, , 

 Plieiscalit, ) 

 fetudes sous genres Scalidae, 1887, pp. 15, 19, 23, 27, 



Ciafhroscala, E. de Boiiry, 1890. 

 Rull. Soc. Mai. Italiana, 1890, vol. xiv. p. 215, 



Scala acuta, J. Sowerby, 1813. 



Scalnria acuta. 



Minei'al Conchology, 1813, pi. 10, lower fiprurea. 



Scalaria acuta, var. mutica. 



Mineral Conchology, 1827, pi- 677. fig. 2. 



Scalaria acuta. 



Dixon's ' Sussex,' 18.50, pi. vii. fig. 15, p. 99. 



Scalaria coronalis. 



Desc. Anim. sans Vert. 1861, vol. ji. pi. xi. figs. 7, 8, p. 337. 



Cirsotrema acrtta. 

 Desc. Scalidaj nouv. 1887, p. 6. 



Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton. 



Middle Eocene. — Bracklesham Beds. Brackleshani Bay. 



Lower Eocene. — London Clay. Brentford. 



Scala semula(?), Dcshayes, 1861, 



Scalaria temula. 



Desc. Anim. sans Vert. 1861, vol. ii. pi. xiv. figs. 7-9, p. 348, 

 Crassiscala tsmula. 



Ann. Soc. Ii. Mai. Belgic^ue, 1888, vol. xxiii. pi. vi. fig. 10, p. 144. 

 Horizon and Locality. 



Middle Eocene. — Bracklesham Beds. Stubbingtpn. 



Scala Bowerbankii, J. Morris, 1852, 



Scalaria Bowerbankii. 

 Quart. Journ. Geol, Soc. 1852, vol. viii. pi. xvi. fig. 9, p. 266. (Bowerbank 

 Coll.) 



Horizon and Locality. 



Lower Eocene. — Thanet Beds. Heme Bay. 



Scala gallica, E. de Boury, 1887. 

 Scalai-ia multilamella. 



Coq. Foss. Paris, 1829, vol. ii. pi. xxii. figs. 15, 16, p. 196, nan Basterot. 

 Acrilla gallica. 



Desc. ScalidsB nouv. 1887, p. 11. 

 Horizon and Locality. 



Middle Eocene. — Bracklesham Beds. Bracklesham Bay. 



Scala interrupta, .1. de C. Sowerby, 1827. 

 Scalaria interrupta. 

 Mineral Conchology, 1827, pi. 577. fig. 3. 



