OPISIUOBEANCHIATA. ACTiEONID^. 269 



Order OPISTHOBRANCHIATA, M.-Edwards. 



Family ACT^ONID^, Orbigny. 



Genus ACTION, Montfort, 1810. 

 Oonch. Syst. 1810, vol. 2. p. 315. 



Tomatdla, Lamarck, 1822. 

 Hist. Nat. Anim. sans Vert. 1822, vol. 6. part 2, p. 219. 



Actseon alter ?, Deshayes, 1862. 

 Tornatella altera. 

 Desc. Anim. sans Vert. 1862, vol. ii. pi. xxxvii. figs. 4-7, p. 699. 



Actaon alter. 



Ann. Soc. R. Mai. Belgique, 1889, vol. xxiv. j). 301. 

 Horizon and Locality. 



Oligocene. — Headon Beds. Roydon. 



Actseon Charlesworthi, Edwards (MS). 

 Horizon and Locality. 



Upper Eocene. — Barton Beds. High Cliff. 



Actseon dactylinus ?, Deshayes, 1862. 

 Tornatella dactylina. 

 Desc. Anim. sans Vert. 1862, vol. ii. pi. xxxvii. figs. 10-13, p. 596. 



Acfteonidea dactylina. 



Ann. Soc. K. Mai. Belgique, 1889, vol. xxiv. p. 302. 

 Horizon and Locality. 



Oligocene. — Headon Beds. ColweU Bay. 



Actseon Gardner!?, Cossmann, 1889. 



Actteon Gardtieri. 



Ann. Soc. R. Mai. Belgique, 1889, vol. xxiv. pi. viii. fig. 38, p. 299. 

 Horizons and Localities. 



Upper Eocene. — Barton Beds. High Cliff. 



Middle Eocene. — Bracklesham Beds. Stuhbington. 



Actseon limneiformis, Sandberger, 1862. 



Tornatella limneiformis. 

 Conch. Mainz. Tert. 1862, pi. xiv. iig. 9, p. 2U.). 

 Desc. Anim. sans Vert. 1862, pi. xxxviii. figs. 4-6, p. 598. 



Horizons and Localities. 

 Oligocene. — Hempstead Beds. Hempstead. — Headon Beds. Roydon: 

 Hordwell. 



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