DOUACID^. — TELLINID^. 69 



Family DONACID^, Deshayes. 



Genus DONAX, LinnsDus, 1767. 

 Systema Naturae, 1767, ed. 12, vol. 1. p. 1126. 



Donax gibbosula, Edwards (MS.). 



Horizon and Locality. 



Upper Eocene. — Barton Beds. High Cliff. 



Donax trigontila) Deshayes, 1860. 



Dima.v triyonula. 



Desc. Anim. sans Vert. 1860, vol. i. pi. xxiv. figs. 27, 28, p. 397. 



Horizon and Locality. 

 Upper Eocene. — Barton Beds. High Cliff. 



Family TELLINID^, Lamarck. 



Genus TEIiUNA, Linnaeus, 1767. 

 Systema Naturae, 1767, ed. 12, vol. 1. p. 1116. 



Tellina affinis, Edwards (MS.). 



Harizcms and Localities. 

 Oligocene. — Headon Beds. Brockenhurst. 

 Upper Eocene. — Barton Beds. Barton. 



Tellina ambigna, J. de C. Sowerby, 1823. 



Tellina ambigua. 

 Mineral Conchology, 1823, pi. 403. (Sowerby Coll.) 

 Lond. Geol. Journ. 1847, pi. 23. figs. S'-S", p. 106. (F. E. Edwards Coll.) 



Horizons and Localities. 



Oligocene. — Headon Beds. Hordwell. 

 Upper Eocene. — Barton Beds. Barton. 



Tellina Beyrichii, Deshayes, 1860. 



Tellina Beyrichii. 



Desc. Anim. sans Vert. 1860, vol. i. pi. xxvi. figs. 14-16, p. 340. 

 Horizon and Ijitcality. 



Lower Eocene. — London Clay. Portsmouth. 



Tellina Branderi, J. de C. Sowerby, 1823. 



Tellina himacidata. 

 Brander's ' Fobs. Hant.' 1766, pi. vii. fig. 102, p. 41. 



Tellina Branderi. 

 Mineral Conchology, 1823, pi. 402. fig. 1. (Sowerby Coll.) 

 Lond. Geol. Journ. 1847, pi. 23. figs. I'-l", p. 104. (F. E. Edwards CoU.) 



