198 PEOCEEDINGS OP THE MALACOLOGICAL SOCIETY. 



Cenia cocksi, A. & H., Conch. Soc. List, p. 17 ; Eliot, p. 143, pi. vii, 



figs. 10-11, p. 179. 

 Acteonia cocksi, Colgan, Irish Naturalist, vol. xxi, p. 225 et seqq., 1912. 



Genus Limapontia, Johnston, 1836. 

 Limapontia, Johnston, Mag. Nat. Hist. (Loudon), vol. ix, p. 79, 

 Feb. 1836. 



Type by monotypy, L. nigra, nov. 

 Chalidis, Quatrefages, Ann. Sci. Nat. (Paris), ser. iii, vol. i, p. 155, 

 March (published ante April 15). 1844. 

 Type by monotypy, C. ccerulea, nov. 

 Pontolimax, Creplin, Arch, fiir Naturg., 1848, non comp. 



LIMAPONTIA capitata (0. F. Muller, 1774). 

 Fasciola capitata, 0. F. Muller, Verm. Hist., vol. i, pt. 2, p. 70, 1774 : 



Baltic Sea. 

 Limapontia nigra, Johnston, Mag. Nat. Hist. (Loudon), vol. ix, 



p. 79, Feb. 1836 : Berwick Bay. 

 Chalidis nigricans, A. & H., Athenaeum, No. 1028, p. 748, July 10, 



1847, n.n. 

 Limapontia capitata, Muller, Conch. Soc. List, p. 17. 

 nigra, Johnston, Eliot, pp. 141, 178. 



limapontia depressa, Alder & Hancock, 1862. 

 Limapontia depressa, A. & H., Ann. & Mag. Nat. Hist., ser iii, vol. x, 



p. 264, Oct. 1, 1862 : Sunderland. 

 Conch. Soc. List, p. 17 ; Eliot, p. 142, pi. vii, figs. 6, 8, 



p. 178. 



Family ELYSIID^. 

 Genus Elysia, Risso, 1818. 

 Elysia, Risso, Journ. de Physique, vol. Ixxxvii, p. 375, Nov. 1818. 



Type by monotypy, Notarchus timidus, nov. 

 Actceon, Oken, Lehrb. Naturg., Th. iii, Zool. pt. 1, p. 307, 1815. 

 Type by monotypy, Aplysia viridis, Montagu. 

 Not Acteon, Montfort, Conch. Syst., vol. ii, pp. 314-15, 1810. 

 Aplysiopterus, Chiaje, Mem. Anim. s. Verteb. Napoli, vol. iv, p. 31, 

 " 1829," 1830. 

 Type by monotypy, A. neapolitanus, nov. 

 Rhyzohranchus, Cantraine, Bull. Acad. R. Sci. Bruxelles, vol. ii, 

 p. 384, Dec. 1835. 



Type by monotypy, Aplysia viridis, Montagu. 



ELYSIA VIRIDIS (Montagu, 1804). 

 Laplysia viridis, Montagu, Trans. Linn. Soc. (Lond.), vol. vii, 



p. 76, pi. vii, fig. 1, 1804 : Devon. 

 Notarchus timidus, Risso, Journ. de Physique, vol. Ixxxvii, p. 376, 



Nov. 1818 : Nice. 



