252 GABTEEOPODA. 



Neritina zonula. 

 Neritina aperta. 

 Mon. Pal. Soc. 1877, pi. xxxiv. figs. 19, 20>, 20^ pp. 347, 348. 



Horizmi and Localities. 



Oligocene. — Headon Seds. Hordwell ; Colwell Bay. 



Neritina concava) J. do C. Sowerby, 1823. 



N^Bfltfiid COTZCdVd. 



Mineral Concholo<?y, 1823, pi. 385. figs. 1-8 (figs. 1, 4, 6-8, Sowerby Coll.) 

 Land- u. Siissw.-Conch. 1873, pi. xv. fig. 13, p. 267. 

 Mon. Pal. Soc. 1877, pi. xxxiv. figs. 14»-14'=, p. 346. 



Horizons and Localities. 

 Oligocene. — Hempstead Beds. Hempstead.^jyeacfo/i Beds. Headon Hill ; 

 Colwell Bay ; HordweU ; Mead End. 



Neritina fulminifera (?), Sandberger, 1853. 

 Neritina fuhninifera. 



Conch. Maniz. Tert. 1863, pi. vii. fig. 13, p. 153. 



Horizon and Locality. 

 Oligocene. — Hempstead Beds. Hempstead. 



Neritina globulus, Ferussac, 1820 (date ?). 



Nerita globulus. 



Hist. Nat. Mollusques, 1820, Atlas, pi. 2. fig. 14. 



Neritina globulus. 



Diet. Sci. Nat. 1825, vol. 34. p. 481. 



Neritina uniplicata. 



Mineral Conchology, 1823, pi. 386. figs. 9, 10. (Sowerby Coll.) 

 Coq. Foss. Paris, 182.5, vol. ii. pi. xvii. figs. 19, 20, p. 151. 

 Desc. Anim. sans Vert. 1864, vol. ii. p. 22. 

 Ann. Soc. R. Mai. Belgique, 1888, vol. xxiii. p. 86. 



Horizon and Localities. 



Lower Eocene. — Woohcich Beds. Charlton ; Woolwich ; Bromley; Bickley ; 

 Peckham ; Thames Tunnel. 



Neritina Passyana (?), Deshayes, 1864. 

 Neritina concava, var. 

 Mineral Conchology, 1823, pi. 385. fig. 2. (Sowerby Coll.) 



Neritina Pas.syana. 



Desc. Anim. sans Vert. 1864, vol. iii. pi. Ixv. figs. 11-13, p. 24. 

 Neritina Passyi. 



Ann. Soc. R. Mai. Belgique, 1888, vol. xxiii. p. 88. 



Horizon and Localities. 



Upper Eocene. — Barton Beds. Barton ; High Cliff. 



Neritina planulata (Edwards, MS.), Sandberger, 1873. 



Neritina planulata. 

 Land- u. Sussw.-Conch. 1873, pi. xv. fig. 14, p. 268. 

 Mon. Pal. Soc. 1877, pi. xxxiv. %s. 21', 21", p. 349. 



Horizons and Localities, 



Oligocene. — Hempstead Beds. Hempstead. — Bembridge Beds. Gurnet's 

 Bay. — Headon Beds. Headon HiU. 



