28 LAHELLIBRANCUIATA. 



Nuculana minima, var. communis, S. V. Wood, 1864. 



Leda minima, var. communis. 



Men. Pal. See. 1864, pi. xvii. figs. T-T, p. 127. (F. E. Edwards CoU.) 



Horizons and Localities. 



Oligocene. — Headun Beds. Brockenhurst. 



Upper Eocene. — Barton Beds. Barton ; High Cliff. 



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



Lower Eocene. — London Clay. Highgate. 



Nuculana minima, var. gracilis, Deshayes, 1860. 



Leda gracilis. 

 Desc. Anim. sans Vert. 18C0, vol. i. pi. btiv. figs. 24-26, p. 831. 



Leda minima, var. gracilis. 



Mon. Pal. Soc. 18H4, pi. xvii. figs. 7", 7S p. 127. (F. E. Edwards Coll.) 



Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton ; High Cliff. 



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



Nuculana oblata, S. V. Wood, 1864. 



Leda oblata. 



Mon. Pal Soc. 1864, pi. xix. fig. 10, p. 128. 



Horizon and Localities. 

 Lower Eocene. — London Clay. Highgate ; Potter's Bar. 



Nuculana partim-striata, S. V. Wood, 1804. 



Leda partim-striata. 



Mon. Pal. Soc. 1804, pi. xvii. figs, l-'-l", p. 129. (F. E. Edwards Coll.) 

 Horizon and Localities. 



Lower Eocene. — London Clay. Clarendon ; Ilaverstock Hill ; Highgate ; 

 Alum Bay (no. 4 Bed) ; Portsmouth; Potter's Bar. 



Nuculana prisca, Deshayes, 1860. 



Leda prisca. 



Descr. Anim. sans Vert. 1860, vol. i. pi. Ixv. figs. 1-5-17, p. 830. 



Mon. Pal. Soc. 1864, pi. xvii. figs. 4»-4% p. 128. (F. E. Edwards Coll.) 

 Horizon and Localities. 



Lower Eocene. — London Clay. Highgate Wood, near Finchley; Cla- 

 rendon ; Fortess Green. 



Nuculana propinqua, S. V. Wood, 1864. 

 Leda propinqua. 



Mon. Pal. Soc. 1864, pi. xx. fig. 2, p. 129. (F. E. Edwards Coll.) 

 Horizon and Locality. 



Oligocene. — Headon Beds. Col well Bay. 



Nuculana scalaris, Edwards (MS.). 



Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



