226 ©ASTBEOPODA. 



Viviparus vestitus, Edwards (MS.). 



Horizon and Locality. 



Oligocene. — Bemhridgc Beds. Sconce. 



Family ASSIMINIIDiE, H. & A. Adams. 



Genus ASSIMINEA (Leach MS.), J. Fleming, 1828. 

 Hist. British Anim. 1828, p. 275. 



Assiminea conica, C. Pre vest, 1821. 



Paludina conica. 

 .lourn. Physique, 1821, vol. 93. p. 427. 

 Coq. Foss. Paris, 1825, vol. ii. pi. xvi. tit's. (3, 7, p. 129. 



Bithinia conica. 



Desc. Anim. sans Vert. 1862, vol. ii. p. 494. 



Assiminea conica. 

 Land- u. Siissw.-Conch. 1872, pi. xi. fig. 11, pi. xv. fig. 9, p. 212. 



Bithinia conica ? 

 Mon. Pal. Soc. 1877, pi. xxxiv. fig. 8, p. 338. 



Horizons and Localities. 

 Oligocene.— Hempstead Beds. Hempstead.— ifcatfon Beds. East Lowes. 



Family PALUDESTRINID^*, R. B. Newton. 



Genus PALUDESTRINA, Orbigny, 1839. 

 Voy. Amfirique merid. (MoUusques), 1839, vol. 5. part iii. p. 381. 



Hydrobia, Hartmann, 1821. 



Sturm's Deutschlands Fauna, 1821, Abth. vi. Heft 5, p. 47 



(non Hydrobiiis, Leach, 1817). 



Litorinella, .\lex. Braun, 1843. 



Amtl. Ber. Ges. deutsch. Nat. Mainz (Sept. 1842), 1843, p. 148; adopted in 



.Inhrb. Ver. Nat. Nassau, 1845, p. 159. 



Faludestrina ambigua, Edwards (MS.). 



Horizon and Loealitij. 



Upper Eocene.— 7y«rtoH Bed«. High Cliff". 



Faludestrina auceps, Edwards (MS.). 



Horizon and Locality. 



Oligocene. — Headon Beds. Hordwell ; Colwell Bay ; Mead End. 



* The genus Hydrubia being preoccupied, it is proposed to substitute Paludestrinida; 

 for that of llvclrobiidoe. 



