248 GASTEEOPODA. 



Genus HIPPONYX, Defrance, 1819. 

 Joum. Phys. Hist. Nat. 1819, vol. 88. p. 215, figs. 1-4. 



Hipponyx cornucopisB) Lamarck, 1802 and 1805. 



Patella cornucopia. 



Ann. Mus. 1802, vol. 1. p. 311 ; 1805, vol. 6. pi. i. fig. 4. 



Pileopsis corntecopitg. 



Coq. Foss. Paris, 1824, vol. ii. pi. ii. figs. 13-16, p. 23. 



Hipponyx comucopite. 



Dixon's ' Sussex,' 1850, pi. v. fig. 1, p. 96. (Dixon Coll.) 



Desc. Anim. sans Vert. 1861, vol. ii. p. 269. 



Ann. Soc. R. Mai. Belgique, 1888, vol. xxiii. p. 195. 



Horizon and Locality/. 

 Middle Eocene. — Bracklesham Beds. Bracklesham Bay. 



Hippon3rx dilatatus, Lamarck, 1802 and 1805. 



Patella dilatata. 



Ann. Mua. 1802, vol. 1. p. 311 ; 1805, vol. 6. pi. i. figs. 



IHleopsis dilatata. 



Coq. Foss. Paris, 1824, vol. ii. pi. ii. figs. 19-21, p. 24. 



Hipponyx dilatatus. 



Desc. Anim. sans Vert. 1861, vol. ii. p. 269. 



Ann. Soc. R. Mai. Belgique, 1888, vol. xxiii. p. 195. 



Horizon and Localities. 

 Middle Eocene. — Bracklesham Beds. Bracklesham Bay ; Huntingbridge ; 

 Stubbington. 



Family POMATIID^, R. B. Newton. 



Genus POMATIAS, B. Studer, 1789. 



Faunula Helvetica (Vermes) in W. Coxe's ' Travels in Switzerland,' 1789, 

 vol. 3. p. 388, nrni Hartmann, 1821. 



Cyclostoma, Draparnaud, 1801. 



Tabl. Moll. Terr. Fluv. France, 1801, p. 37 (parftm), 



non Lamarck, 1799 or 1801. 



Cyclostomus, Montfort, 1810. 

 Conch. Syst. 1810, vol. 2. p. 286. 



Cyclostoma, B. Studer, 1820. 

 Syst. Verz. Schweizer-Conch. 1820, p. 21. 



Pomatias, R. B. Newton, 1891. 

 Annals, 1891, ser. 6, vol. vii. p. 346. 



[There are no specimens to represent either this genus or family in the Edwards 

 Collection, none having yet been recorded from the Eocene or Oligocene rocks of this 

 country. The genus is included here for the purpose of explaining its synonymy.] 



