NTTCULANIDa;. — TTNIONID^. 29 



Nuculana substriata, Morris, 1852. 

 Le'la substriata. 

 Quart. Joui-n. Geol. Soc. 18")2, vol. viii. pi. xvi. fig. 7, p. 2G6. (F. E. Ed- 

 wards Coll.) 

 Mon. Pal. Soc. 1864, pi. xvii. fig. 5, p. 130. (F. E. Edwards Coll.) 



Horizon and Localities. 



Lower Eocene. — Thanet Sands. Richboro' Castle ; Pegwell Bay. 



Family UNIONID^, Fleming. 



Genus UNIO, Eetzius (Philipsson), 1788. 

 Nova Testaceorum Genera, 1788, p. 16. 



Unio Edwardsii, S. V. Wood, 1864. 



Unio Edicardsii. 

 Mon. Pal. Soc. 1804, pi. xx. figs. 16*, 16^ p. 13.3. (F. E. Edwards Coll.) 



Horizon and Localities. 



Lower Eocene. — Woohoich Beds. Peckham; Dulwich. 



Unio Gibbsii (Forbes, MS.), Morris, 1856. 



Unio Gibbsii. 

 Forbes's 'Isle of Wight,' Mem. Geol. Surv. 1856, pi. ii. flg. 6, p. 147. 

 Mon. Pal. Soc. 1804, pi. xx. fig. 14, p. 133. 



Horizon and Locality, 

 Gligocene. — Hempstead Beds. Hempstead. 



Unio Gibbsii (?), var. Headonensis (Edwards, MS.), S. V. Wood, 

 1864. 



Unio Gibbsii (?), var. Headonensis. 



Mon. Pal. Soc. 1864, pi. xx. fig. 19, p. 136. (F. E. Edwards Coll.) 

 Horizon and Locality. 



Oligocene. — Headon Beds. Headon Hill. 



Unio Solandri, J. de C. Sowerbj', 1826. 



Unio Solandri. 



Mineral Concbology, 1826, pi. 617. (Sowerby Coll.) 



Mon. Pal. Soc. 1864, pi. xx. figs. 11", 11", p. 134. (F. E. Edwards Coll.) 

 Horizons and Localities. 



Oligocene. — Hempstead Beds. Hempstead. — Headon Beds. Headon Hill ; 

 Colwell Bay ; Hordwell. 



Unio subparallela (Edwards, MS.), 8. V. Wood, 1864. 



Unio subparalkla. 

 Mon. Pal. Soc. 1864, pi. xx. figs. 13", 13", p. 135. (Edwards and Prestwich 



Colls.) 



Horizon and Localities. 



Lower Eocene. — Woohoich Beds. Counter Hill pits, Deptford ; Peckham ; 

 Dulwich. 



