ABCID^. 



15 



Family ARCID^, Lamarck. 



Genus ARC A, LinniBus, 1766. 

 Syatema Naturae, ed. 12, vol. i. p. 1140. 



Area appendiculata, J. Sowerby, 1821. 



Area lactea. 

 Brander's ' Foss. Hant.' 1766, pi. viii. fig. 106, p. 42. (Brander Coll.) 



Area appendieidata. 

 Mineral Conchology, 1821, pi. 276. fig. 3. 

 Men. Pal. See. 1864, pi. xiv. figs. S^Sf, p. 79. (F. E. Edwards Coll.) 



Horizons and Loealities. 

 Oligocene. — Headon Beds. Brockenhurst. 

 Upper Eocene. — Barton Beds. Barton. 



Middle Eocene. — Braeklesham Beds. Huntingbridge ; Stubbington; Brack- 

 lesham Bay ; WhiteclifF Bay. 



Area appendieulata, var. duplicata, J. de C. Sowerby, 1824. 



Area duplicata. 



Mineral Conchology, 1824, pL 474. fig. 1. (Sowerby Coll.) 



Area appendieulata, var. duplieata. 

 Mon. Pal. Soc. 1864, pi. xiv. figs. &'-?,% p. 79. (F. E. Edwards Coll.) 



Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton. 



Middle Eocene. — Braeklesham Beds. Bramshaw ; Huntingbridge ; Braekle- 

 sham Bay. 



Area biangtda, Lamarck, 1805 and 1809. 



Area biangula. 



Ann. Mus. 1805, vol. C. p. 219; 1809, vol. 9. pi. xvii. figs. 2', 2*. 



Mon. Pal. Soc. 1804, pi. xiv. figs. 1", V>, l"", \', V, p. 80. (F. E. Edwards Coll.) 



Horizons and Localities. 



Oligocene. — Headon Beds. Brockenhurst. 



Middle Eocene. — Braeklesham Beds. Braeklesham Bay. 



Area biangula, var. Branderi, J. Sowerby, 1821. 



Area Branderi. 



Mineral Conchology, 1821, pi. 276. fig. 1. (Sowerby Coll.) 



Byssoarca Branderi. 



Dixon's 'Sussex,' 1850, pi. iii. fig. 23, p. 169. 



Area bianyula, var. Branderi. 



Mon. Pal. Soc. 18(34, pi. xiv. fig. 1"^, p. 80. 



Horizon and Locality. 



Upper Eocene. — Borlon Bedt, Barton. 



