PROSOBRANCHIATA. — rLETJBOIOMIDiE. 109 



Iloriam and localities. 

 Lower Eocene. — London Claij. Shenfield ; Southampton. 



Pleurotoma lanceolata, Edwards, 1856. 



I'lewotoma lancvolata. 



Mon. Pal. Soc. 1856, pi. xxvi. figs. 11", IP, p. 226. (F. E. Edwards Coll.) 

 Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Pleurotoma laevigata, J. do C. Sowerbj-, 1823. 



Pleurotiima Irevigata. 

 Mineral Conchologv, 1823, pi. 387. fig. 3. (Sowerby Coll.) 

 Mon. Pal. Soc. 1806, pi. x.-tvi. figs. 9', 9", p. 227. (p. E. Edwards Coll.) 



Horizon and Locality. 

 Upper Eocene. — Barton Beds. Barton. 



Pleurotoma Lehonii, Eouault, 1843 and 1850. 



Pkurotoma Ijehonii. 



Bull. Soc. Ge'ol. France, 1818, vol. 5. s^r. 2, p. 207. 



Mem. Soc. Geol. France, 1850, ser. 2, vol. 3. part 2, pi xvi. fig. 26, p. 485. 



Mon. Pal. Soc. 1860, pi. xxxi. figs. 13", 13^ p. 271. (Wetherell Coll.) 



Horizon and Locality. 

 Lower Eocene. — London Clay. I] ighgate Archway. 



Pleurotoma macilenta, Solander, 1766. 



Mure.v macilentus. 



Brander's ' Foss. Hant.' 1766, pi. ii. fig. 33, p. 20. (Brander Coll.) 

 Pleurotoma macilenta. 



Mon. I'al. Soc. 1856, pi. xxvi. figs. 13", 13'>, p. 224. (F. E. Edwards Coll.) 

 Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Pleurotoma macrura, Edwards, 1860. 



Pleurotoma macrura. 



Mon. Pal. Soc. 1860, pi. xxxui. figs. 8", 8'', p. 271. (F. E. Edwards CoU.) 



Horizon and Locality. 



Lower Eocene. — London Clay. Finchley. 



Pleurotoma microdonta, Edwards, 1856. 



Pleurotoma microdonta. 



Mon. Pal. Soc. 18.56, pi. xxvii. fig. 4, p. 236. (F. E. Edwards Coll.) 

 Horizons and Localities. 



Upper Eocene. — Barton Beds. High ClifF. 



Middle Eocene. — Bracklexham Beds. Brackleshara Bay, 



Pleurotoma planetica, Edwards, 1856. 



Pleurotoma j>lanetica. 



Mun. Pal. Sue, 1856, pi. xxvi. fig, .3, p. 212. (F. E. Edwards Coll.) 

 Horizon and Localities. 



Middle Eocene. — Bracklesham Beds. Bramshaw ; Iluntingbridge ; Brook ; 

 Bracldesham Bay. 



