IREDALE & o'dONOGHUE : BRITISH NUDIBRANCHIATE MOLLUSCA. 199 



Aplysiopterus neapolitanus, Chiaje, Mem. Anim. s. Verteb. Napoli, 



vol. iv, p. 31, " 1829," 1830 : Naples. 

 Rhyzohranchus viridis, Cantraine, Bull. Acad. R. Sci. Bruxelles, 



vol. ii, p. 384, Dec. 1835. 

 Elysia viridis, var. olivacea, Jefireys, Brit. Conch., vol. v, p. 32, 



1869 : Lochmaddy, Hebrides. 

 Elysia viridis, Montagu, Conch. Soc. List, p. 17. 



var. olivacea, Jeffreys, ibid. 



Montagu ; Eliot, p. 140, pi. vii, figs. 1, 2, p. 178. 



Family STILIGERID^. 



Genus Alderia, Allman, 1846. 



Alderia, Allman, Ann. & Mag. Nat. Hist., vol. xvii, p. 4, Jan. 1846. 



Type by original designation, Stiliger modestus, Loven. 

 Alderia, Allman MS., Thompson, Rep. Brit. Assoc. 1843, p. 250, 



1844, n.n. Alder & Hancock, Rep. Brit. Assoc. 1844, p. 26, 



1845, n.n. Allman, Rep. Brit. Assoc. 1844, p. 65, n.n. 



ALDERIA MODESTA (Loven, 1844). 

 Stiliger modestus, Loven, Of vers. K. Vet. Akad. Forh. Stockh,, 



vol. i. No. 3, p. 49, March 20, 1844 : Boliuslan, Norway. 

 Alderia amphibia, " Allman MS.," Thompson, Rep. Brit. Assoc. 



1843, p. 250, 1844, n.n. : Ireland. 

 Alderia modesta, Loven, A. & H., Mon., Fam. 3, pi. xli, pt. 6, 1854 ; 



Conch. Soc. List, p. 17 ; Eliot, p. 137, pi. vii, figs. 3-5, p. 177. 



Genus Stiliger, Ehrenberg, 1828. 

 Stiliger, Ehrenberg, Symbolae Physicse, Zool. ii, pi. vii (Moll. pi. i, 

 fig. 3), 1828, sheet i, 1831. 



Type by monotypy, S. ornatus, nov. 

 Calliopcea, Orbigny, Mag. de Zool., Classe v, p. 12, pi. cviii {post 

 Nov.), 1837. 



Type by monotypy, C. bellula, nov. 

 Ercolania, Trinchese, Atti R. Univ. Genova, vol. ii, pi. v, 1877 ? 



Type, here selected, Ercolania siottii, Trinchese. 

 Custiphorus, Deshayes, non comp. 



stiliger bellulus (Orbigny, 1837). 

 Calliopcea bellula, Orbigny, Mag. de Zool., Classe v, p. 12, pi. 108 



(post Nov.), 1837 : Brest. 

 Embletonia marice, Meyer & Mobius, Fauna der Kieler Bucht, 



Bd. i, p. 13, plate, 1865 : Kieler Bucht. 

 Stiliger bellulus, Orbigny, Conch. Soc. List, p. 17 ; Eliot, pp. 136, 177. 



Genus Herm^a, Loven, 1844. 



Hermcea, Loven, Ofvers. K. Vet. Akad. Forh. Stockh., vol. i. No. 3, 

 p. 50, March 20, 1844. 



Type by subsequent designation, Gray, Proc. Zool. Soc. 

 (Lond.), p. 166, 1847 : Doris bifida, Montagu. 



