IREDALE & o'dONOGHUE : BRITISH NUDIBRANCHIATB MOLLUSCA. 219 



Goniodoris nodosa, Montagu, A. & H., Mon., Fam. 1, pi. xviii, pt, 2, 

 1846 ; Concli. Soc. List, p. 19 ; Eliot, p. 157. 



GONIODORIS CASTANEA, Alder & Hancock, 1845. 

 Goniodoris castanea, A. & H., Ann. & Mag. Nat. Hist., vol. xvi, 

 p. 341, Nov. 1845 : Salcombe. 



var. pallida, Dautzenberg & Durouchoux, Feuille jeunes 



naturalistes Paris, ser. v, An. 43, Suppl., No. 514, p. 8, Oct. 1, 

 1913 : Saint Malo, France. 



Mon., Fam. 1, pi. xix, pt. 3, 1847 ; Conch. Soc. List, 



p. 19; Eliot, p. 157. 



Family ONCHIDORID^. 



Genus Onchidorus, Blainville, 1816. 



Onchidorus, Blainville, Bull. Sci. Soc. Philom. Paris, (April No.), 

 1816, p. 96, July, 1816 ; Diet. Sci. Nat. (Levrault), vol. xxxii, 

 p. 280, Nov. 13, 1824 {Onchidoris). 



Type by monotypy, 0. leachii, nov. = Doris fusca, Miiller, 

 Lamellidoris, A. & H., Mon. Nudib. Moll. (Ray Soc), pt. 7, app. 

 p. xvii, 1855. 



Type by subsequent designation, or virtual tautonymy, 

 Doris bilamellata, " A. & H." 

 Proctaporia, Morch, Gronland (Rink) (Prodr. Fauna Moll. Grronl., 

 p. 6), 1857. 



Type by monotypy, Doris fusca, Fabr., Fauna Gtroenlandica, 

 p. 344 (pref . May 17, 1779), 1780 = ? Doris fusca, Miiller. 

 Villiersia, Orbigny, Mag. Zool., Classe v, p. 15, pi. cix, (after Nov.) 

 1837. 

 Type by monotypy, F. scutigera, nov. : Rocbelle. 

 Oicodespina, Gistel, Naturg. Thierr. f. Schulen, p. xi (pref. Easter, 

 1847), 1848. 



New name for " Villersia, Orbigny, in Guerin, Magas., 

 vol. vii." 



[Note. — Onchidoris was used 

 by Gray, who bad access to 

 the type, since Blainville 

 described Ms genus from a 

 specimen from the British 

 Museum. Apparently Blain- 

 ville named the same speci- 

 men three times, and this is not strange when we know the history of 

 his rejected and mislaid MSS., both in the British Islands and France. 

 However, Leach figured the typical specimen in his Moll. Brit. 

 Synops., which was not published until after his death in 1852. 

 Since there was no means of correction, p. 20 Doris elfortiana, pi. vii, 

 fig. 1, is cited with the wrong reference, but there is no difficulty 



