PE080BRANCHIA.TA, PLETTBOTOMIDai. 113 



Section I. Shells fusiform, 



A. Sinus in the posterior margin of the whorl. 



b. Canal short or indistinct, 



Plearotoma acuticosta (?), Nyst, 1845. 



rinirotoma acuticosta. 



Mem. Cour. (4to), 1845, vol. xvii. pi. xiv. fig. 6, p. 529. 



Pleurotoma acuticosta (?). 



Mon. Pal. Soc. 1800, pi. xxviii. figs. 14''-14^', p. 249. (F. E. Edwards Coll.) 

 Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Pleurotoma attenuata, J. Sowerby, 1816. 



rieurutoma attenuata. 

 Mineral Conchology, 1816, pi. 146. fig. 1. 

 Dixon's ' Sussex,' 1850, pi. vi. figs. 11, 14, p. 102. 



Mon. Pal. Soc. 1856, pi. xxvii. figs. 7^-7=, p. 237 (figs. 7% 7S F. E. Edwards 

 Coll.) 



Horizon and Localities. 

 Middle Eocene. — Bracklesham Beds. Bracklesham Bay; Brook; Bram- 

 shaw. 



Pleurotoma biconus, Edwards, 1860. 



Pleurotoma biconus. 



Mon. Pal. Soc. 1860, pi. xxxiii. figs. 7', 7'', p. 318. (F. E. Edwards Coll.) 

 Horizon and Locality. 



Upper Eocene. — Barton Beds. High Cliff. 



Pleurotoma bracheia, Edwards, 1860. 



Pleurotoma brucheia. 



Mon. Pal. Soc. 1860, pi. xxix. figs. 9», 9", p. 263. (F. E. Edwards Coll.) 



Horizons and Localities. 

 Upper Eocene. — Barton Beds. Barton. 

 Middle Eocene. — Brachlesham Beds. Bracklesham Bay. 



Pleurotoma brevirostrum, J. de C. Sowerby, 1823. 



Pleurotoma brevirostrum. 

 Mineral Conchology, 1823, pi. 387. fig. 2. (Sowerby Coll.) 

 Mon. Pal. Soc. 1860, pi. xxix. figs. 6", &>, p. 258. (Sowerby Coll) 



Horizon and Locality. 

 Upper Eocene.— ia/-<on Beds. Muddiford. 



Pleurotoma coarctata, Edwards, 1860. 



Pleurotoma coarctata. 

 Mon. Pal. Soc. 1860, pi. xxviii. figs.l2»-12«, p. 245. (F. E. Edwards Coll.) 



Horizon and Locality. 

 Upper Eocene. — Barton Bedx. High Cliff. 



I 



